Japanese garden juniper Care (Watering, Fertilize, Pruning, Propagation) - PictureThis (2024)

What is the best way to water my Japanese garden juniper?

If you decide to water your Japanese garden juniper, you will be happy to find that it is a straightforward task. One of the easiest ways to water this tree is by simply turning on your garden hose and using it to soak the soil slowly. Your garden hose is the ideal watering tool to use for mature Japanese garden juniper trees, as large specimens may need a high volume of water during each watering. However, for smaller trees, you may get by by using a watering can or some other smaller watering tool. Also, you should try to avoid overhead watering as excessive moisture on this plant’s leaves can lead to disease, especially when the tree is young.

What should I do if I water my Japanese garden juniper too much or too little?

At times, overwatering can be the result of poor soils. Mainly, if the soil in which your Japanese garden juniper grows does not allow water to drain effectively, the plant will likely begin to decline. If this is the case, you should either amend the soil to improve its drainage characteristics or transplant your Japanese garden juniper to a more favorable growing location. If you grow your Japanese garden juniper in a pot, this can also mean you may need to repot your plant with looser soils in a container that allows for better drainage. An overwatered plant may also contract diseases, which you should try to treat immediately. For an underwatered Japanese garden juniper, the remedy is quite simple. Begin watering more often, and soon your plant will bounce back and return to full health.

The easiest way to tell if you have overwatered your Japanese garden juniper is to observe the plant’s foliage. Specifically, looking at the new growth will give the clearest sign of whether this plant suffers from too much moisture. An overwatered Japanese garden juniper may produce new growth, but that new growth may be discolored or prone to easy breakage. Another sign that the soil for your Japanese garden juniper is too moist is if you notice standing water or that water is not draining quickly in your plant’s growing area. Underwatered Japanese garden juniper trees will also have symptoms present in the foliage. In this case, the leaves may become sparse, brown. Usually, Japanese garden juniper can grow well with rainfulls. If you see such symptoms on your plant, you should consider if there has been too much rain recently or constantly high temperatures, which will help you to make the correct judgment.

How often should I water my Japanese garden juniper?

A mature Japanese garden juniper does not need much water at all. In most instances, this tree will become drought tolerant and survive off of nothing more than rainfall. At most, you’ll need to water this plant about once per week during the hottest months of the year, but during other seasons, you probably won’t need to water it at all. The exception to that rule is if you are dealing with a plant that has been newly planted. If that is the case, you should water regularly to maintain consistent soil moisture and help the roots establish themselves. With that said, the most important thing to remember when watering Japanese garden juniper is that this species does not tolerate standing water. As such, when in doubt, you should err on the side of not watering your Japanese garden juniper rather than risking watering it too much.

How much water does my Japanese garden juniper need?

The height of summer is one of the few times that you’ll need to water your Japanese garden juniper. At that time of year, it is typical to give this plant about one inch of water per week. However, that amount can change depending on how much it has rained. If it has rained one inch or more that week, you won’t need to give any water to your Japanese garden juniper.newly planted Japanese garden juniper will need more water during the establishment period. Typically, this amounts to watering about once every one to two weeks for the first few growing seasons.

How should I water my Japanese garden juniper through the seasons?

The Japanese garden juniper tree will need the most water during the summer months when the weather is the hottest. At that time, you should give this plant water about once per week in the absence of rainfall. During other times of the year, this plant will often survive with no water at all. In spring and fall, you might need to provide some water if the weather is exceptionally hot, but this is rare. Unlike many other plants, the Japanese garden juniper does not enter full dormancy in winter, which means that it will continue growing, during the coldest months. Still, the water needs during winter will remain quite low as the cool temperatures will not cause the soil to dry out quickly..

How should I water my Japanese garden juniper at different growth stages?

Young Japanese garden juniper trees need significantly more water than those that are established. A newly planted tree should receive water at least weekly to ensure that the soil remains moist to facilitate root development. After the first growing season, your Japanese garden juniper should be well-adapted to its new growing location and should need much less water. At this time, you can begin following the standard instructions for watering this species, providing supplemental water about once per week during summer when it does not rain. Beyond that, there is no other time at which you’ll need to alter your watering habits based on the growth stages of the Japanese garden juniper tree.

What's the difference between watering Japanese garden juniper indoors and outdoors?

It is far more common to grow the Japanese garden juniper in an outdoor growing location. However, it is also possible to grow this plant indoors in a container. In that scenario, one gardener often raise the Japanese garden juniper as the bonsai plant. Whether you grow this plant indoors or outdoors, you can expect its water needs to remain relatively similar. The one difference is that you may need to water an indoor Japanese garden juniper tree a bit more. Indoor plants won’t have access to rainfall during the summer. Also, indoor areas are often much drier than outdoor growing locations, and the size of the pots limits the water-retainability, which can lead to higher water needs.

Fertilizer

Why do I need to fertilize my Japanese garden juniper?

Fertilizing Japanese garden juniper in the spring encourages healthy growth. Remember, the plant has a long lifespan, and it needs to be supported. Adding nutrients to the soil can also improve the plant’s health, making it better able to resist common pests and diseases that can stunt growth or shorten its lifespan.

When is the best time to fertilize my Japanese garden juniper?

The growing medium doesn’t always supply enough nutrients to support healthy growth. However, Japanese garden juniper is a little different from your garden annuals and perennials. It doesn’t require a lot of extra nutrients. The best time to fertilize Japanese garden juniper is in the spring before new growth appears.

When should I avoid fertilizing my Japanese garden juniper?

Some plants thrive with monthly or weekly fertilization, but not Japanese garden juniper. It does not require a lot of extra nutrients. Too much fertilizer can cause it to start dying back. Only apply fertilizer in the spring, skipping the other seasons. In the summer, fall, and winter, do not add fertilizer or organic matter to the soil.

What type of fertilizer does my Japanese garden juniper need?

The age of your plant plays a role in the type of fertilizer but remember Japanese garden juniper does not require a lot of extra nutrients. Look for a balanced plant food, it will help support healthy root development and growth but stay away from fertilizers with high nitrogen contents.

How do I fertilize my Japanese garden juniper?

How you fertilize Japanese garden juniper is as important as when you add the extra nutrients. Apply the fertilizer once in the spring, around the base of the plant. Try to avoid getting any fertilizer on the trunk. If you are using a granulated fertilizer, cover the pellets with a light layer of soil. It helps ensure the fertilizer is absorbed into the soil.

What happens if I fertilize my Japanese garden juniper too much?

It can be tempting to keep feeding Japanese garden juniper throughout the spring and summer. You want to encourage healthy growth, but too much fertilizer can have disastrous consequences. All types of fertilizers contain nitrogen, and the nutrient does support healthy growth. However, too much nitrogen can result in root burn.

How much/long should Japanese garden juniper get sunlight per day for healthy growth?

For healthy growth, make sure that Japanese garden juniper receives at least 3–6 hours of sun each day. This is actually a minimum requirement—most plants that can handle part sun can also thrive in full sun, but because they require less light for photosynthesis, they are more flexible than plants that require full sun or part shade.

What type of sunlight does Japanese garden juniper need?

Japanese garden juniper does best with exposure to full or part sun. They will perform best with direct morning light, but in summer they need protection from the strong afternoon sun. In temperate environments, too much hot afternoon sun can burn the leaves, damaging the plant's appearance and health.

Can sunlight damage Japanese garden juniper? How to protect Japanese garden juniper from the sun and heat damage?

Japanese garden juniper planted indoors can easily be damaged by direct sunlight when it's moved outdoors. The best way to prevent sunburns from overexposure is to move pots gradually from a shaded area to a brighter spot, gradually. But even plants that are acclimated to the summer sun can be damaged by extreme heat. In a heatwave, it is important to keep the soil consistently moist so that plants can cope with excessive levels of heat. Moving plants in containers to areas with afternoon shade or erecting a shade cloth over them can protect sensitive Japanese garden juniper during extreme weather events.

Does Japanese garden juniper need to avoid sun exposure? / Should I protect Japanese garden juniper from the sun?

While bright morning sun and some full sun exposure can be highly beneficial for Japanese garden juniper, the harsh, hot midday sun of summer can be too much to handle.

If planted in the ground, the summer sun will usually ramp up slowly enough through the season for Japanese garden juniper to gradually adapt to its intensity. But a potted plant that has been indoors or in a protected location will often suffer injury when placed suddenly into a location where the direct summer sun reaches it in the hottest part of the day.

To protect this plant from the brutal afternoon summer sun, plant or place it in an understory location where it is shaded at midday by taller trees and plants or by a building or landscape feature.

What will happen if Japanese garden juniper gets inadequate sunlight?

When Japanese garden juniper receives too little sun, they may become pale green or display drooping, yellow leaves. While some leaf drop is normal, if leaves are dropping but no new ones are growing in to replace them, it is a sign that something is wrong. If Japanese garden juniper receiving inadequate light does manage to grow, the new growth is often spindly, pale, and prone to insect infestation. Paying attention to these signs and changing the lighting conditions of the plant will make a significant difference.

Does Japanese garden juniper need special care about sunlight during its different growth stages?

Tender, new leaves are especially sensitive to sunburn. Bearing this in mind, very young Japanese garden juniper and when it's in a strong growth phase, such as in late spring and early summer, will be more sensitive to harsh sun and heat than the mature one or those in a more dormant fall growth stage. Japanese garden juniper fresh from a nursery is also usually not prepared for strong full sunlight and must be introduced to it slowly.

Are there any cautions or tips for sunlight and Japanese garden juniper?

Recently transplanted Japanese garden juniper will often experience a bit of shock and will need to be cared for carefully, either shaded from bright afternoon sun or placed in a protected area. On very hot days, you may see the leaves of Japanese garden juniper drooping—this is usually nothing to worry about. Plants will send the water in their leaves down into their roots to protect them from burning. However, if the leaves are still drooping in the evening or the next morning, the plant needs water. Always avoid watering during the hottest times of day, as sunlight can hit wet leaves and scorch them easily.

Japanese garden juniper that has been underwatered will be weaker than that with consistently moist soil. This can leave it with weak roots that are unable to protect the leaves on hot, sunny summer days by diverting water away from the leaves. Care for an underwatered plant by giving it a long, deep watering and then allowing the top two inches of soil to dry out before the next watering. Even if it loses its leaves, if cared for properly it will grow new ones.

Do I need to prune my Japanese garden juniper?

The Japanese garden juniper is a low-maintenance, winter-hardy, and drought-resistant evergreen perennial plant. This means it can thrive almost anywhere. This unique plant grows well indoors, as well as in many outdoor environments. To keep yours in good health, it’s recommended that you prune it only as needed to control growth and maintain shape. This popular shurb can take up quite a bit of room if left to grow freely. Given enough time, it can be pruned to grow into a small tree. Japanese garden juniper is very resilient and learning how to prune them is easy.

When is the best time to prune my Japanese garden juniper?

A lot of new gardeners shy away from pruning the Japanese garden juniper because they’re afraid to cut too much. Luckily, Japanese garden juniper is generally considered to be among the easier and more forgiving plants to prune since regrowth appears quite quickly. Although these perennials are relatively fast-growing, you only need to prune when you spot unsightly overgrowth or damaged leaves. In other words, if your Japanese garden juniper starts to look uneven or damaged, it may be a good time to prune. If you want to control the size of Japanese garden juniper, you need to do a strong pruning in winter time, and you can prune to the shape you want. If the shape is appropriate and only small-scale shaping is needed (pruning no more than 1/4 of the total size of the plant), it can be done in summer or autumn. When Japanese garden juniper is growing, if there are yellowing leaves and diseased leaves, prune off the yellowing leaves at the bottom and the parts of the leaves that have spots due to disease infection, which can effectively reduce the infection. If the number of leaves with spots is relatively large, the number of pruned leaves should not exceed a quarter of the total to avoid affecting the growth of Japanese garden juniper.

What should I do after pruning my Japanese garden juniper?

When pruning your Japanese garden juniper, always use freshly cleaned shears to prevent the possibility of cross-contamination from other plants. The Japanese garden juniper has a high tolerance for drought and cold weather, and can even survive irregular watering schedules for short periods. When grown indoors, it prefers temperatures between 65 and 75 °F and should be kept away from air conditioning drafts to prevent discoloration, leaf fall, and other damage.

How should I prune my Japanese garden juniper during different seasons or stages of growth?

The good news is that these plants have a medium growth rate which means they cycle through growth stages fairly quickly. Once your plant matures, you can follow normal pruning methods. Japanese garden juniper is mainly used for leaf viewing, flowers have no ornamental value and will consume nutrients, you can prune the flowers when the plant is in bloom and concentrate the nutrients for the growth of the leaves. If you want to control the size of Japanese garden juniper, you need to do a strong pruning in winter time, and you can prune to the shape you want. If the shape is appropriate and only small-scale shaping is needed (pruning no more than 1/4 of the total size of the plant), it can be done in summer or autumn. When Japanese garden juniper is growing, if there are yellowing leaves and diseased leaves, prune off the yellowing leaves at the bottom and the parts of the leaves that have spots due to disease infection, which can effectively reduce the infection. If the number of leaves with spots is relatively large, the number of pruned leaves should not exceed a quarter of the total to avoid affecting the growth of Japanese garden juniper.

What tools, techniques and tricks should I use when pruning my Japanese garden juniper?

Before getting started, it’s best to have a plan. Try to visualize the basic shape and style of how you want your plant to look. Having a goal in mind will help you choose what pruning method and tools to use. Once you have an idea of how you want it to look, it’s time to get ready to prune. Tools Sharp scissors or a pair of hand pruners work great when pruning your Japanese garden juniper. However, if you keep your Japanese garden juniper outdoors or allow it to grow freely, you may need a tree pruner to reach higher leaves. How to prune When learning how to prune your Japanese garden juniper, factors like growth stage, climate, and the current season will give you clues about your plant's pruning needs. Additionally, how you want your plant to look is another thing to consider. If you want to control the size of Japanese garden juniper, you need to do a strong pruning in winter time, and you can prune to the shape you want. For example, if you want your plant to be short and round, cutting from the top and pruning any leggy parts will be your best bet. If you want a tall, slender appearance, cut from the bottom and sides to limit the spread of growth to encourage vertical growth. If the shape is appropriate and only small-scale shaping is needed (pruning no more than 1/4 of the total size of the plant), it can be done in summer or autumn. To simplify the process, here are a few tips to remember:

1. Leave the main stalk in place and trim around it.
2. Trim off any dead or unhealthy-looking branches and remove or cut any “suckers”
3. Use shears, scissors, or your fingers to cut or pinch just below the bud, branch, or stem.

What are common problems when pruning my Japanese garden juniper and how can I fix them?

One major concern when it comes to pruning the Japanese garden juniper is the possibility of mites, disease, and infection from the laceration left behind after pruning. This can be lessened by pruning at an angle and monitoring the site until healed. Additionally, taking special care to not overwater to prevent the soil from becoming too damp can minimize the risk of spider mites and aphids.

What is the optimal temperature for Japanese garden juniper?

The best temperature for Japanese garden juniper to thrive is 65~80℉(18~27℃). During the primary growing phase, the highest temperature tolerable would be 95℉(35℃), while the lowest tolerable temperature would be 15℉(-10℃). This species is tolerant of low temperatures and will survive freezing winters. The perfect, highest, and lowest temperature range:

Perfect：65~80℉(18~27℃)

Highest：85~95℉(30~35℃)

Lowest：-5~15℉(-20~-10℃) or below

Should I adjust the temperature for Japanese garden juniper during different growing phases?

Research shows that Japanese garden juniper will begin to exhibit signs of stunted growth during prolonged periods of higher temperatures, especially during the development of axillary buds and the growth of main shoots. Keeping the temperatures consistent and cooler, around 65℉(18℃), will encourage vigorous growth after germination or transplanting.

How can I keep Japanese garden juniper warm in cold seasons?

Japanese garden juniper can withstand freezing temperatures when planted in the ground in areas that don’t get below of 15℉(-10℃) as an extreme temperature during the winter months. But if planted in pots or containers, then their roots must be protected from the winter cold. Do this by wrapping the container in a blanket or bringing it inside where it will be fully protected from the elements.

What damage will Japanese garden juniper suffer if the temperature is too high/low?

Greater harm will come to Japanese garden juniper if the temperature is consistently too high versus too low.

If Japanese garden juniper gets too hot, seed germination and photosynthesis efficiency is lessened due to hormone triggers caused by heat stress. The plant will show signs through wilting, leaf browning, and potentially death.

If Japanese garden juniper gets too cold, plant functions such as nutrient uptake and photosynthesis will cease, resulting in the possible death of the plant. If a single freezing event occurs during the growing season, then a membrane phase transition might occur, which can cause a cease in plant functions and death of the plant.

What tips and cautions should I keep in mind when it comes to temperature for Japanese garden juniper?

Keeping the soil temperature consistent is one of the most important strategies to keeping Japanese garden juniper healthy, which leads to successful budding, flowering, and new growth. Do this by consistently watering, adding mulch to bare soil, and planting in the shade.

How can I keep Japanese garden juniper warm without a heat pad?

Due to the cold tolerance of Japanese garden juniper, heating pads will not be necessary if planted outside in the ground. If the plant is in an outdoor pot, then bring it inside a heated house and place it in a sunny window during the winter months.

How can I provide Japanese garden juniper with an adequate temperature condition?

To ensure adequate temperature conditions are present, plant Japanese garden juniper in an area with partial shade. If possible, use afternoon shade to provide the best protection during the hottest part of the day. This will also result in lower temperatures in the soil due to increased moisture retention. If Japanese garden juniper is planted indoors, then keep the container away from windows and out of direct sunlight during the summer months to prevent the soil temperature from spiking daily.

How can I save Japanese garden juniper from temperature damage?

During the summer or times of high heat, give Japanese garden juniper extra shade and water to help cool its leaves, roots, and soil. During cold snaps or growing season freezes, cover sensitive budding vegetation with frost cloth or water using sprinkler systems. If it’s only nearing freezing temperatures for a short period, then water during the day several hours before the freeze. If the temperature is predicted to remain below freezing for an extended period, then keep the sprinkler running until the temperature rises above freezing the following day.

Should I adjust the temperature for Japanese garden juniper in different seasons?

Japanese garden juniper is a mid-temperature plant that can easily tolerate the typical fluctuations of the seasons and remain a hardy species when planted in maintained landscapes areas, containers, or indoors. Therefore, adjusting the temperature during the different seasons is unnecessary for primary growth. If flowering is stunted or impeded, then allowing the plant to experience a season of winter freeze could help to revive flowering.

Under what conditions should I stop adjusting the temperature for Japanese garden juniper?

If it becomes too difficult to lower the temperature for an indoor plant during the summer, then plant it outside in the ground or in a container. Make sure to plant Japanese garden juniper in a shaded location and water often to keep the soil moist.

Propagation

Fungus

Climate stresses

Non pesticide

Pesticide

Dieback is a plant disease causing progressive death of twigs, branches, roots, or even the entirety of Japanese garden juniper. It can severely weaken or kill Japanese garden juniper. Causes are usually fungi, but can include other biotic and abiotic factors.

Japanese garden juniper's distinctive symptoms include browning, reddening or yellowing of needles, followed by the progressive death of branches from the tip towards the base. Tree decline might occur over several seasons.

1

Many types of fungi, such as Phytophthora and Verticillium, can cause dieback in Japanese garden juniper. They infect and block the plant's water transportation system, causing wilting and death.

2

Extremes of temperature, water condition, or poor soil nutrients can also lead to dieback.

1

Pruning: Properly prune and dispose off diseased parts, reducing sources of infection.

Proper irrigation: Adjusting watering, particularly in periods of drought, can help Japanese garden juniper resist the fungus.

2

Fungicidal sprays: Applying a protective fungicide can help control the disease.

Systemic treatments: Injecting an appropriate systemic fungicide directly can help manage more serious infections.

"Blight" is an umbrella term used to describe a category of tree diseases caused by fungus or bacteria. Branch blight occurs when fungus attacks the branches and twigs of a tree, resulting in branches slowly dying off.

Branch blight can affect most species of trees to some degree, and it may be called by different names including twig blight or stem blight. It is caused by a variety of fungi which attack branches first, especially immature growth.

Blight usually occurs in warm, humid conditions, so is most common in the spring and summer months. Because specific environmental conditions are required, the frequency of branch blight can vary from year to year. This makes the disease hard to control, as it can spread between trees and affect multiple plants in a short period of time.

In the worst-case scenario, trees can lose significant portions of their foliage and fail to produce fruit. Young or unhealthy trees could die off completely.

The first symptoms of branch blight are that the emerging foliage turns brown or gray at the tips, especially on the smallest branches. Brown spots cover the entire surface of the leaves, eventually causing leaves and stems to shrivel and fall off. Over time, the dying tissue will spread toward the center of the plant. If left untreated, spores from the attacking fungus may appear on dying foliage within 3-4 weeks of the infection.

In some cases, lesions may form at the spot where the twig branches off from the healthy tissue. Branches may display girdling, which is a band of damaged tissue encircling the branch. An untreated tree will eventually lose all of its foliage and die.

• Pathogens on young twigs and foliage cause disease
• Stressed and unhealthy trees are more susceptible - root injury due to physical or insect damage, infection, or aging can prevent adequate absorption of water and nutrients
• Extremely wet conditions including sprinkler watering can attract fungus
• Fungi can be transmitted between nearby trees

• Inspect trees frequently, and remove any infected branches as soon as possible. Branch blight cannot be cured, so the only treatment is to prune the tree and monitor it carefully for signs of the disease.
• All affected parts of the tree should be removed, since blight can survive over the winter inside the plant’s tissues.
• Blight can become systemic in the tree, in which case the entire plant should be removed so it does not remain a host for the pathogen and allow it to spread.

• Avoid purchasing trees with dead or dying growth.
• Sterilize cutting tools frequently when pruning to avoid spreading fungus between plants.
• Keep trees mulched and watered, especially during dry periods, to prevent stress.
• Avoid splashing water on the leaves when watering, as wet foliage is attractive to fungi and bacteria.
• When planting, allow enough room between trees that there will be sufficient air circulation for them to dry out. Crowding trees too close together can increase humidity and allow the fungi to transfer.
• When conditions are wet and humid, a fungicide can be used on new growth.

Regardless of the type of plant or where it is grown, at some point, it will begin to aged yellow and dry. This is a natural, unavoidable process that happens when the plant has completed all of the steps in its life.

Annual plants go through this process at the end of a single growing season. Perennial plants live for multiple years, if not tens or hundreds of years, but will still ultimately exhibit these symptoms.

When plants have progressed through their natural developmental stages and are nearing the end of their lifecycle, they begin showing signs of decline. Leaves will start to yellow and droop, and over time they turn papery brown and dry.

Once completely dry, the leaves begin to fall from the plant until the entire plant has dried out.

At the end of its life, genetic coding within the plant increases the production of ethylene, a phytohormone that controls senescence or natural aging and death. Cell division stops, and the plant begins catabolizing resources to use in other parts of the plant.

As this happens, the tissues begin yellow and drying until the entire plant is desiccated and perishes.

If the yellowing and drying of leaves and flowers is a natural progression due to age, nothing can be done to slow or stop the process. Once hormones within the plant begin the process of senescence, it’s irreversible.

Unfortunately, there is no way to prevent plants from dying of “old age.” To help prolong their life, and put off symptoms of aged yellow and dry for as long as possible, take care of them by giving them enough water, fertilizing them appropriately, and making sure they get enough sunlight.

Longhorn beetles are characterized by extremely long antennae which are often as long as, or longer, than the beetle's body. Adult longhorn beetles vary in size, shape, and coloration, depending upon the species. They may be 6 to 76 mm long. The larvae are worm-like with a wrinkled, white to yellowish body and a brown head.

Longhorn beetles are active throughout the year, but adults are most active in the summer and fall. Larvae feed on wood throughout the year.

Both larvae and adults feed on woody tissue. Some of the most susceptible species include ash, birch, elm, poplar, and willow.

If left untreated, longhorn beetles can kill trees.

Longhorn beetles are attracted to wounded, dying, or freshly-cut hardwood trees. Adults lay their eggs in the spring, summer, and fall on the bark of greenwood. There may be sap around egg-laying sites.

Once the eggs hatch, larvae called round-headed borers burrow into the trunk to feed. They may tunnel for one to three years depending on the wood's nutritional content. As the larvae feed, they release sawdust-like frass at the base of the tree.

Eventually, the larvae turn into pupae and then adults. When the adults emerge, they leave 1 cm holes in the bark on their way out. Adults feed on leaves, bark, and shoots of trees before laying eggs.

After a few years of being fed upon by longhorn beetles, a tree will begin losing leaves. Eventually, it will die.

Some longhorn beetles species are native insects, and they cause little damage. Therefore, these don't warrant control.

Other longhorn beetles species are invasive pests that were recently introduced from other areas. These species can cause a great deal of damage to hardwood trees.

• Apply an insecticide containing imidacloprid as a soil injection or trunk injection following product instructions. This will enter into new grow and kill adults who feed on foliage. This will not help save trees that are already infested with large amounts of larvae, but it will save trees located near an infested tree.
• Contact an arborist for best control practices regarding infected trees.
• To properly control longhorn beetles, all host plants in a given area must be treated.
• Contact a local extension agent or state agency. Tracking the spread of longhorn beetles is a key component of their control.

• Keeping trees healthy, uninjured, and unstressed will help prevent beetle infestation. Water trees appropriately, giving neither too much nor too little.
• Check with local tree companies about which tree species have fewer problems.
• Avoid moving firewood as this can introduce exotic longhorn beetles.
• Routine spraying of persistent, broad-spectrum insecticides will help prevent re-infestation of previously affected trees or infestation of unaffected trees.