The adult moths resemble wasps with Viburnum beetle can defoliate viburnums. Features. Fungal leaf spots are caused by a different f… However, if they become a problem, most are relatively easy to deal with. Koreanspice Viburnum Viburnum carlesii. Alternatively, it may be a little dry. Best of all, my very favourite viburnum, V. x juddii (compact, beautiful and intensely fragrant), is highly resistant. Pests and diseases. endstream endobj 443 0 obj <. The adults are about a 1/4 inch long (4.5 to 6.5 mm) and a dull brown, as are the tiny eggs. Sign up for our newsletter. Unfortunately they’re often preyed upon by a wide range of pests. I have three beautiful viburnums that look sick. Keep reading to learn more about the insects affecting viburnums and how to go about controlling viburnum insect pests. Occasionally, viburnum diseases may strike, but their occurrence is typically rare. The leaves can be prone leaf spot and fungal infections. Thrips also cause purplish-red spots on the underside of the leaves, where they scrape the cells and suck the sap. Here’s how to control a viburnum beetle infestation: • Grow resistant species - viburnum beetles can do significant damage to plants in this genus, but you can cut off their food supply by growing less susceptible species in your garden, such as V. carlesii, V. plicatum, and the fragrant V. x juddii. ... Plant Health Diagnosis: Assessing Plant Diseases, Pests and Problems Online Courses . Koreanspice Viburnum flowers . Are your viburnum leaves looking lacy and damaged? Invertebrates. Powdery mildew affects many types of plants, from ornamentals to vegetables. Walter’s viburnum, in the opinion of some nursery growers, is the very best viburnum for use in central and south Florida. Viburnum Leaf Beetle Lifecycle: How To Treat For Viburnum Leaf Beetles, Predatory Mite Pest Control - Using Predatory Mites In The Garden, Gifting Used Gardening Books: How To Donate Garden Books, Regional To-Do List: West North Central Gardening In December, Plant Swap Ideas – How To Create Your Own Plant Swap, Transplanting A Hellebore – When Can You Divide Lenten Rose Plants, Can Olive Trees Grow In Zone 7: Types Of Cold Hardy Olive Trees, Fragrant Champaca Information: Tips On Caring For Champaca Trees, Zone 8 Onions: Information On Growing Onions In Zone 8, The Act Of Giving – Crafty Ways To Give Back, Grateful To Give Back: Sharing The Garden With Others In Need, We’re All In This Together - Passing On Gratitude In The Garden, Recipes From The Garden: Pressure Cooking Root Vegetables. Local viburnum leaf beetle activity Between the 2019 and 2020 growing seasons, several residents in Livingston County contacted the local MSU Extension office with descriptions of leaf-feeding damage to viburnum shrubs. orange county, New York State. Informational table showing disease name, symptoms, pathogen/cause, and management of Viburnum diseases. sj6x Apr 25, 2020 5:09 PM CST. Viburnum Diseases & Insect Pests Factsheet | HGIC 2057 | Updated: Jan 13, 2020 In general, most viburnums are relatively pest-free. Once one plant is infected, problems can spread through the entire hedge very quickly. Shake out all fallen and diseased leaves from the center of the viburnum shrubs and destroy them. 463 0 obj <>/Filter/FlateDecode/ID[<31912409F0A127478212A9B2AAA8A880><8AC67D99DC3F814EB74083EBFC758A73>]/Index[442 32]/Info 441 0 R/Length 97/Prev 715057/Root 443 0 R/Size 474/Type/XRef/W[1 2 1]>>stream Of the diseases, this culture is most often susceptible to drying of the branches and infection with gray rot. Pests and Diseases Browse this list of plants to find out which common pests and diseases are most likely to affect a species or genus. Branching Out, Volume No. The occurrence and spread of this disease is favored by a combination of warm days, cool nights, and humid conditions, but is inhibited by rain. These showy Viburnum aphids can be spotted on the tips of branches in clusters of gray to dark green. Viburnum leaf beetles are rather bland looking for an exotic pest and can be easily missed. Most diseases that affect viburnums are fungal in nature. Pests and Diseases Viburnum shrubs aren’t affected much by pests and diseases but here are a few that you might see if the plant is under duress. At the end of last summer, a lot of branches were dying off. In culture. Viburnum pests - Diseases and pests Kalina is a very popular garden culture in our area. Invertebrates Aphids Bean aphid Armored scales Oystershell scale Black vine weevil and woods weevil Spider mites Southern red mite Thrips Greenhouse Thrips Diseases Viburnum Leaf Beetles – Plant resistant viburnum varieties to avoid viburnum leaf beetles. The larvae and adults of the Viburnum leaf beetle feed on the leaves and may completely defoliate the plant, and repeated damage can kill it. Journal of Environmental Horticulture 32:84-102. Spray with insecticidal soap, if necessary, but be careful, as there are many beneficial insects that feed on thrips. Pests and disorders of Viburnum spp. Unfortunately, it is not widely available. h�bbd``b`�+�S�;DT���A�"�&�$X�@,7� ��X� BHD�]@��#�`�$�� 6���� ��!�3�� 0 ��> Like all other shrubs, Kalina (Viburnum) damaged by diseases and pests, especially high risk of the spread of insects and infections in adverse weather conditions. Viburnum Diseases & Insect Pests Factsheet | HGIC 2057 | Updated: Jan 13, 2020 In general, most viburnums are relatively pest-free. Pests and Diseases. Asiatic Garden Beetles – Flowers, leaves, and new growth is skeletonized when Asiatic garden beetles are around. While they’re not usually dangerous, the damage isn’t pretty. They can be gotten rid of with a steady stream of water from the hose, insecticidal soap, or horticultural oil. This spring I added leaf compost and trimmed back all the dead branches. Gardening in your own yard has major upsides, but it has one really irritating downside: pests and diseases that attack your beautiful plants and delicious homegrown vegetables. They will cause leaf curl. This list will help you learn about common pests and diseases and how to identify t… For instance, don’t tuck a viburnum into deep shade unless that’s what recommended for it. Informational table showing disease name, symptoms, pathogen/cause, and management of Viburnum diseases. Once cold damage occurs, viburnum plants will be predisposed to injury both by opportunistic insect pests and infection by plant diseases. ` �9! Spray the leaves and ground below the shrub with insecticidal spray to kill the adults. Root rot is also called shoestring root rot, armillaria root rot and oak root rot. The viburnum beetle is one of our top garden pests, but plants and humans can out-manoeurvre it with these tips But as well as growing resistant species, it also helps to … Light infestations of scale bugs can be scraped off by hand, and heavier ones can be treated with insecticide. Sign up to get all the latest gardening tips! The leaves turn grayish-brown, the leaf tissue collapses and the foliage drops prematur… Pests and Diseases forum: Viburnum in distress. Viburnum trilobum (cranberrybush viburnum, American cranberrybush, high bush cranberry, or highbush cranberry) is a species of Viburnum native to northern North America, from Newfoundland west to British Columbia, south to Washington state and east to northern Virginia. This is a commonly used berry in western Canadian cultures. Prune away egg-infested branches during the winter. Arthropod pests, plant diseases and abiotic disorders and their management on Viburnum species in the Southeastern US: A Review. endstream endobj startxref It is most common when the weather is wet. Greenhouse Thrips; Diseases. Q&As / Diseases and Pests / Insects and Pests / Thrips on Viburnum Thrips on Viburnum Question I had a severe bout of thrips on my viburnum over summer and seem to have managed it with spray. 0 There are several pests; such as aphids, and diseases; such as leaf spot that could be causing your viburnum’s leave to go yellow. Remove adults by hand and introduce nematodes to the soil. These attacks not usually fatal, but monitoring your garden regularly makes you aware of a problem early enough to prevent major damage and literally nip it in the bud. This adaptable tree should be `rediscovered' by landscape architects and others specifying small trees for urban and suburban landscapes. Southern Red Spider Mites – The leaves turn gray/brown and drop when these red spider mites are present. These were the top garden pests and diseases in 2019. You can also introduce beneficial insects such as lacewings, ladybugs, and predatory mites to the garden. It’s native to the UK, but is becoming more widespread. (See pests and diseases). These leaf spot viburnum diseases usually occur during summer months, when conditions are warm and moist. 9. Pests and disorders of Viburnum spp. Viburnum beetle is probably the cause - read our tips to control them and limit their damage. Damage caused by pests that feed on the foliage of Viburnum awabuki affects the appearance of the plant but normally does not harm it. It is characterized by fine white dusty growth on the upper surfaces of leaves. Managers who can discriminate pest injury and plant appearance caused by abiotic disorders will be able to limit unnecessary pesticide applications that would result from misdiagnosis of the problem. Crush eggs in early summer. What Does the Viburnum Leaf Beetle Look Like? Sweet viburnum is fairly resistant to most pests and diseases. There are more than 150 species of Viburnum with many available for problem areas of the garden. Journal of Environmental Horticulture 32:84-102. Diseases and pests of viburnum. office with descriptions of leaf-feeding damage to viburnum shrubs. Aphids – While they don’t cause much damage, aphids can cause curling in new growth. 2. Unfortunately, it is not widely available. Viburnum Mohican “pests” (Question) I have two mature viburnum bushes in my backyard and every year the leaves are being eaten by small grey-ish insects (a bit smaller than a maggot) and the leaves are turned into “skeletons”. Diseases caused by hookahviburnum pests and diseases australia Viburnum Diseases & Insect Pests Home & Garden Several different pests can infest the laurustinus viburnum, causing damage to foliage and flowers. Occasionally disease or insect pest problems do occur, and usually it is during those times that the plants are under stress or growing in … The Morton Arboretum has an excellent post describing the beetle and its metamorphosis, found here: Walter’s viburnum, in the opinion of some nursery growers, is the very best viburnum for use in central and south Florida. Viburnum aphids can be spotted on the tips of branches in clusters of gray to dark green. Powdery mildew infects new leaf … Common types include the Japanese beetle. Root rot is a devastating fungal disease of Laurestinus viburnum. Cool, moist weather favors these diseases, especially when new leaves are developing. For some reason, it has fallen out of favor as a small tree in recent years. It is tolerant to … Views: 348, Replies: 4 » Jump to the end. However, there are forms of this plant that are upright, spreading, weeping, or dwarf. The most dangerous pests are leaf-aphids and viburnum leaf beetles. Oystershell scale; Black vine weevil and woods weevil; Spider mites . Stick a wire into every hole you find to kill the borer inside. Viburnum Crown Borers There are two species of clearwing moths commonly known as viburnum crown borers — the viburnum clearwing borer (Synanthedon viburni) and the lesser viburnum borer (S. fatifera) — that attack at the base or soil line of viburnum shrubs. They hatch in May, and the larvae then feeds on the new leaves. Shake out all fallen and diseased leaves from the center of the viburnum shrubs and destroy them. Bean aphid; Armored scales. It is a shrub or small tree that can grow to a height of about 27 feet. Viburnum tinus (laurustinus or laurustine) is a species of flowering plant in the family Adoxaceae, native to the Mediterranean area of Europe and North Africa. Viburnum pests - Diseases and pests Kalina is a very popular garden culture in our area. Aphids, thrips, scale insects and spider mites are a few of these pests that feed on the. Here are some of the most common viburnum pests and methods for viburnum pest control. Viburnum beetle was named as the number one pest by the RHS in 2010, stealing the crown from slugs and snails. It’s native to the UK, but is becoming more … Aphids. 442 0 obj <> endobj Dawn Dailey O'Brien, Plant Pathology & Plant-Microbe Biology Section, Cornell University Next in our periodic feature articles on important pests of common ornamental plants is Viburnum. It is difficult to determine which form you are buying by simply looking at the plant. 3. "Pests and diseases are among the main challenges we face as climate change affects our gardens and horticulture more widely," he said. Viburnums are a diverse group of flowering shrubs that are very popular in the garden. Glasshouse red spider mite. Additional Notes. Powdery mildew causes infection due to the fungus Erysiphe sparsa, with a particular preference for warm daytime temperatures, cool nighttime temperatures and high moisture content; these conditions promote fungal germination. Southern red mite ; Thrips. %PDF-1.6 %���� Remove all dead branches in the center of Fungal leaf spot thrives in warm, humid summer conditions. The most prevalent diseases affecting viburnums are fungal diseases of the foliage. Several different pests can infest the laurustinus viburnum, causing damage to foliage and flowers. Most of the leaf damage is caused by the stripey, beige-coloured larvae, though later … Mites can be knocked off with a strong spray from the hose or treated with insecticidal soap. Aphids – While they don’t cause much damage, aphids can cause curling in new growth. It is the opinion that the garden pests and diseases very like the viburnum. The huge invasion of the pests completely takes the desire in gardeners to continue the deal with the viburnum, and in this times they end the growing. Bacterial blight and canker; Diseases (cont.) Fungal leaf spots are another common viburnum disease. There are viburnums resistant to powdery mildew, such as Viburnum burkwoodii ‘Mohawk’ and Viburnum carcephalum ‘Cayuga.’. A thread in the Garden Pests and Diseases forum, titled BLUE MUFFIN® viburnum Viburnum species may become diseased with powdery mildew, caused by the fungus, Erysiphe sparsa (formerly Microsphaera sparsa). Viburnum plants are susceptible to an array of fungal infections that cause disease and severely damage the plant. As with nearly any plant, the best way to prevent viburnum diseases is by giving plants ideal growing conditions. Pest resistance: resistant to pests/diseases Use and Management Sweet Viburnum grows quickly in full sun or partial shade on a wide variety of soils. By noticing early stages of pest or disease attack, you may be able to prevent any lasting damage to your hedge. 1. Most of the damage is caused by the larvae in spring but some further damage is done by the adult beetles in late summer. Try watering it more regularly and applying a mulch to the area around the base of the shrub. These two species have a similar look and biology. Thank you for contacting Toronto Master Gardeners regarding your ailing Viburnum lantana ‘Mohican’, also known as Wayfaringtree viburnum, a species susceptible to the viburnum beetle. … Pests and Diseases Sweet viburnum is fairly resistant to most pests and diseases. On the other hand, when growing in viburnum pots, fertilizer ration of 10-10-10 as NPK ratio is highly recommended. Spider mites are active in the cool weather of spring and fall when they pierce the foliage and feed on the sap. Fungal leaf spot, caused by fungi of the Cercospora species, Phoma species and Phyllosticta species, result in foliage damage. This shrub won the love of gardeners with its beautiful decorative appearance and extremely healthy and tasty fruits that are rich in vitamins and other healthy substances. Peoples of various origins both Native and European have used the … If you know … By Lisa Walden Mar 13, 2020 Rosemary Calvert Getty Images The Royal Horticultural Society (RHS) … Remove all dead branches in the center of specimen plants or hedges to allow better aeration. Myrtle Rust Downy mildew causes leaves to develop splotched areas which die and shrivel in spring. Collar, root, and crown rots (Phytophthora root rot) William E. Klingeman, Sarah A. Viburnum Diseases & Insect Pests Home & Garden Ten weird diseases They are remarkably tough plants and suffer from few pest and insect issues. Dogwood Twig Borers – Dogwood borers will dig out holes in the stems, leaving sawdust behind. Rose problems: frequently asked questions Roses seem to suffer from more than their fair share of problems. Try to prevent thrips by keeping weeds under the shrub to a minimum. ... 7= Viburnum beetle. Introduce lacewings as beneficial insects. • The RHS reveals the top ten garden pests Some Asian species such as %%EOF The large, dull green leaves form a moderately coarse texture. White, Anthony LeBude, Amy Fulcher, Nicole Ward Gauthier, Frank Hale; Arthropod Pests, Plant Diseases and Abiotic Disorders and their Management on Viburnum Species in the Southeastern U.S.: Species in the Southeastern U.S.: Viburnum is resistant to many serious diseases, although some fungi and bacteria can attack the species. Heavy attacks can result in most of the foliage being severely affected by late spring. Pests and Diseases Susceptible to attack by aphids, whiteflies and viburnum beetle. Here are some of the most common viburnum pests and methods for viburnum pest control. ... Additional pests and problems that may affect this plant: Relatively trouble free, although leaf spots and borers are possible problems. Familiarize yourself with the infections and controls for surefire identification and management of any problems that arise. And unfortunately not every gardener knows how to deal with pests. The Korean viburnum, Viburnum carlesii, is deciduous and in early spring has a wonderful cluster of pink buds and an absolutely beautiful perfume. Other pests … Leaf Spot Various fungi, including the anthracnose fungus, can cause viburnum leaves to develop black, sunken lesions. The only way to determine the ultimate height and shape of the plant is to know the original source of the plant material… They will cause leaf curl. Diseases and pests of Viburnum: photos and ways to fight 23.07.2019 from gardener Like all other shrubs, Kalina ( Viburnum ) damaged by diseases and pests, especially high risk of the spread of insects and infections in adverse weather conditions. Often these pests and diseases can be kept at bay by providing optimal conditions for your shrub. Pests. A hedge is a row of the same plant which means every plant in that row is vulnerable to the same pests and diseases. 4 pictures total. Viburnum Leaf Beetle Lifecycle The beetles overwinter as eggs deposited in the branches. Occasionally disease or insect pest problems do occur, and usually it is during those times that Other insects affecting viburnums include: Weevils – Weevils chew on the edges of leaves. They can be gotten rid of with a steady stream of water from the hose, insecticidal soap, or horticultural oil. Other pests that infest sweet viburnum include mites, thrips, white flies and bag worms. Thrips – Thrips can cause purple spots on leaves, curled and dropped leaves, and dropped, unopened flower buds. 473 0 obj <>stream The RHS has analysed thousands of gardener enquiries for its latest tally of top 10 diseases and pests. Find more gardening information on Gardening Know How: Keep up to date with all that's happening in and around the garden. Cool, moist weather favors these diseases, especially when new leaves are developing. Common viburnums that are considered moderately susceptible include: V. burkwoodii (Burkwood viburnum), V. x carlcephalum (Carlcephalum viburnum), V. cassinoides (witherod viburnum), V. dilatatum (linden viburnum), V. farreri (fragrant viburnum) (except 'Nanum', which is highly susceptible), V. lentago (nannyberry viburnum), V. prunifolium (blackhaw viburnum), V. x rhytidophylloides (lantanaphyllum … , ladybugs, and heavier ones can be gotten rid of with a strong spray from the center specimen... Insects affecting viburnums include: Weevils – Weevils chew on the edges of leaves are... And feed on thrips of any problems that may affect this plant that are upright, spreading, weeping or... Erysiphe sparsa ( formerly Microsphaera sparsa ) be careful, as there are more than species. Identification and management of viburnum diseases & Insect pests Factsheet | HGIC 2057 |:. Severely affected by late spring introduce beneficial insects such as lacewings, ladybugs and... Leaving sawdust behind foliage being severely affected by late spring tolerant to … pests diseases. Asiatic garden beetles are around tough plants and suffer from few pest and be. The edges of leaves – Armored scale cause leaf drop, discolored leaves, curled and dropped, flower! Foliage of viburnum with many available for problem areas of the damage is done the! The species trees for urban and suburban landscapes, Volume No recent years occurs... And dropped leaves, where they scrape the cells and suck the.. – While they don ’ t tuck a viburnum into deep shade unless that ’ s what for. Such as lacewings, ladybugs, and management of any problems that may affect this plant relatively... Mildew, caused by the larvae in viburnum pests and diseases but some further damage is caused by pests infest! Not harm it thrips also cause purplish-red spots on leaves, and dropped leaves, and! Oak root rot is a shrub or small tree that can grow to a minimum hedge very quickly |:! Viburnum aphids can cause viburnum leaves to develop Black, sunken lesions recent.! – plant resistant viburnum varieties to avoid viburnum leaf beetles from ornamentals to vegetables a small tree in recent.! Damage isn ’ t cause much damage, aphids can cause viburnum to... Try watering it more regularly and applying a mulch to the soil to avoid viburnum leaf beetles are.. Unfortunately not every gardener knows how to deal with the leaf damage caused. White dusty growth on the foliage and flowers the leaf damage is done by fungus... Diseases susceptible to an array of fungal infections that cause disease and severely damage the plant normally. Cause - read our tips to control them and limit their damage the... Dig out holes in the stems, leaving sawdust behind curled and dropped unopened! Damage, aphids can cause curling in new growth or disease attack, you may be able to thrips! Our tips to control them and limit their damage of gardener enquiries for its latest tally top. S native to the UK, but is becoming more widespread this culture is most often to... Drop when these Red spider mites – the leaves can be treated with insecticidal soap, if,! Two species have a similar look and biology especially when new leaves are of... Sweet viburnum is fairly resistant to powdery mildew, such as lacewings, ladybugs, and predatory to! Are symptoms of aphid or thrip infestations your hedge the borer inside ladybugs, the. Out of favor as a small tree in recent years date with all 's!, pests and diseases and how to go about controlling viburnum Insect.! Easily missed trouble free, although leaf spots are caused by the larvae in spring spring but some damage... Harm it – Armored scale cause leaf drop, discolored leaves, and dropped unopened... Fungal diseases of the garden such as viburnum burkwoodii ‘ Mohawk ’ and carcephalum! But be careful, as there are forms of this plant: relatively trouble free, although leaf spots caused! Severely affected by late spring prevent viburnum diseases is by giving plants ideal growing conditions the cells and suck sap... Every hole you find to kill the adults are about a 1/4 inch long ( 4.5 6.5! Black vine weevil and woods weevil ; spider mites are active in the stems, leaving behind... & garden Ten weird diseases they are remarkably tough plants and suffer from more than species! ; Black vine weevil and woods weevil ; spider mites are active in Southeastern! Seem to suffer from more than 150 species of viburnum with many available for problem areas of leaves. With a steady stream of water from the center of the diseases, although leaf spots are caused by larvae! Happening in and around the garden pests and diseases sweet viburnum is resistant to most and... It more regularly and applying a mulch to the UK, but be careful, as the..., insecticidal soap you find to kill the borer inside areas which die and shrivel in spring include... On viburnum species may become diseased with powdery mildew, caused by the,... Than 150 species of viburnum with many available for problem areas of the foliage and flowers Roses... » Jump to the end of last summer, a lot of branches were dying off they can knocked. Most common viburnum pests - diseases and pests Kalina is a very popular garden culture our... Areas which die and shrivel in spring fairly resistant to most pests and diseases can be spotted on the of... Fall when they pierce the foliage of viburnum awabuki affects the appearance of the branches infection... White viburnum pests and diseases and bag worms plant is infected, problems can spread through the hedge. Of Laurestinus viburnum, whiteflies and viburnum carcephalum ‘ Cayuga. ’ fungi, including the fungus! Inch long ( 4.5 to 6.5 mm ) and a dull brown, as there are more than their share! Cause purplish-red spots on leaves, and management of viburnum diseases & Insect pests Home & Ten! Plant Health Diagnosis: Assessing plant diseases the laurustinus viburnum, causing damage to viburnum shrubs and destroy them,. Dull brown, as are the tiny eggs purple spots on leaves, and predatory mites to the.... They ’ re often preyed upon by a different f… Here are some of the Cercospora species Phoma... Have a similar look and biology of Laurestinus viburnum your shrub information on gardening Know how: keep up date. Viburnums are fungal in nature growing in viburnum ground verities Weevils chew on the other,! Don ’ t tuck a viburnum into deep shade unless that ’ s recommended... In our area tuck a viburnum into deep shade unless that ’ s what recommended it! In that row is vulnerable to the garden pests and diseases susceptible drying!, beige-coloured larvae, though later … pests and diseases can be on! Pests that infest sweet viburnum is fairly resistant to most pests and diseases and European have the! Most common when the weather is wet 27 feet curled or rolled leaves symptoms. Row of the most prevalent diseases affecting viburnums are fungal diseases of the Cercospora species, Phoma species Phyllosticta! Diseases that affect viburnums are fungal in nature culture is most often susceptible to an array of infections! Leaves turn gray/brown and drop when these Red spider mites then feeds on the tips of branches clusters... Means every plant in that row is vulnerable to the UK, but be careful, there! Like the viburnum shrubs and destroy them dropped leaves, curled and dropped,! Regularly and applying a mulch to the garden oystershell scale ; Black vine weevil and woods ;... Ratio of 15-15-15 for in viburnum ground verities on viburnum species in the stems, leaving sawdust behind and... ’ s what recommended for it diseases is by giving plants ideal growing conditions be able to prevent by., unopened flower buds … Branching out, Volume No severely affected by late spring occurs viburnum! Beetles – flowers, leaves, and heavier ones can be prone leaf spot viburnum diseases often to! Various fungi, including the anthracnose fungus, Erysiphe sparsa ( formerly Microsphaera sparsa ) of with strong... The adults are about a 1/4 inch long ( 4.5 to 6.5 ). Same plant which means every plant in that row is vulnerable to the end of last,! Affects the appearance of the most dangerous pests are leaf-aphids and viburnum leaf beetles – flowers leaves... At the plant cause viburnum leaves to develop Black, sunken lesions is caused by pests that feed on other. Culture in our area can spread through the entire hedge very quickly viburnum beetle the sap form a coarse! And methods for viburnum should have an NPK fertilizer ratio of 15-15-15 for in ground... Ideal growing conditions the UK, but be careful, as are the tiny eggs for urban and suburban.! Also cause purplish-red spots on the tips of branches in clusters of gray to dark green flowers, leaves and... Normally does not harm it affect this plant that are upright, spreading, weeping, or oil... Insects and spider mites are a few of these pests and diseases Armored scale cause leaf,... Of about 27 feet you are buying by simply looking at the end affecting viburnums include: –. Looking for an exotic pest and can be knocked off with a steady stream of water the! Shrivel in spring but some further damage is done by the larvae then feeds on the tips branches. Or dwarf a shrub or small tree that can grow to a height of about feet! Problems can spread through the entire hedge very quickly lot of branches in the Southeastern US: Review. Of this plant: relatively trouble free, although leaf spots are caused by the fungus Erysiphe. Clusters of gray to dark green insects affecting viburnums include: Weevils – Weevils chew on other! Blight and canker ; diseases ( cont. dead branches in clusters gray... & Insect pests the cool weather of spring viburnum pests and diseases fall when they pierce foliage!