Why are my Italian cypress trees turning brown? Whether you need to fix, build, create or learn, eHow gives you practical solutions to the problems life throws at you. ROUNDUP kills the root of the weed so that weeds never come back in your garden, borders, patios, driveways, grass or paths. Some cypress leaves have flattened needles, while others have scaly Thuya leaves. One of which is an intolerance to poor drainage. This hardy tree grows 3 to 4 feet every year to reach a height of 35 to 50 feet and spreads 15 to 25 feet wide. The result was a large, fast-growing tree that is both disease-resistant and drought-tolerant. Besides removing the tree right away, the Foliar Spray method would be most suitable here. You should be able to dig it out of the ground once it has rotten through. Taurus, according to astrologer Michelle, The Placement of Permanent Patches on a Cub Scout Uniform All members wear the Council emblem, also known as the council shoulder patch, on the, Explanation: When the lung tissue is examined under a microscope, a capillary appears dense red due to blood flowing in them, while the alveolar sacs, One thing is certain: a meal at Noma is out of this world. Likewise, excessively-large Leyland cypress hedges can shade gardens and dry the soil, making it difficult to grow other plants nearby. Leyland cypress trees grow in a pyramidal, conical shape with flattened sprays of bluish-green, needled leaves. Because of an infiltration of seiridium, bought, and cercospora, leyland cypress branches turn brown. methods. Click to see full answer Can dimension 2EW be used on red apple (aptenia cordifolia) It is not on the tolerant ornamental list. Leyland Cypress Prone to disease which threatens the life of the plant. Pour, brush or spray a glyphosate herbicide over the cuts in the stump so it reaches the roots of the Leyland cypress and kills it. This method is also preferred if you want to use the Cypress as firewood because after ringbarking the tree will slowly start to lose moisture while still standing. If you are using the Foliar Spray method, you should ideally kill the tree during spring or summer. How to make a taurus man regret losing you? - Purchase the spray version of any powerful herbicide. A professional can also take care of the knees which Cupressaceae tend to develop. It and other pesticides that contain the active ingredient glyphosate are the most widely used herbicides in the world. Deciduous plants : Roundup-Pro in late summer or early fall Evergreens: Roundup-Pro in the spring when plants have 2 to 4 new leaves Triclopyr (Brush-B-Gone & others) in the spring on new growth. Leyland cypress ( Cupressocyparis leylandii) is an interspecific hybrid between Monterey cypress and Nootka cypress that was first discovered in England in 1888. A: Although bald cypress does not usually make "knees" in non-swampy soil, it does occasionally happen. Find out how to spot them, the symptoms and outlook, and how you can help. We empower you to efficiently solve each new challenge and make your life better and easier. Check to see if any permits are required prior to felling and killing a tree. Or packing around roots with ROCK-Salt. Cypress or Cupressaceae can be killed without cutting them down. Pruning should be carried out between April and the end of August, with up to three cuts during the growing season for Leyland cypress. Killing a tree can be quite straightforward, especially when you know how to follow the procedures related to the technique. How do you fix a girdled tree? Tanya Khan is a freelance author and consultant, having written numerous articles for various online and print sources. It just works every time. How to kill an invasive tree using caustic How to get rid of clover in horse pasture. Hi! Answer last updated on: 07/10/2017. Be sure you want the tree to die; you can;t reverse the process after pouring in the salt. Once the tree is dead, it is already seasoned, so theoretically you can use Cypress Leyland as firewood right after cutting it down, assuming it has already dried out beforehand. How Long Does it Take For Seeds to Sprout in The Soil? Some animals use leylandii for shelter, especially in urban areas where cover can be sparse. We aim to enrich everyones life through plants, and make the UK a greener and more beautiful place. How to identify winter trees quiz - twigs, buds and silhouettes, Winter wildlife watching: what, where and when to spot, 7 funny fungi names to help mushroom identification, Winter picnics: hot food ideas and recipes, Woodland Walks podcast with Adam Shaw - ancient trees of Hatfield Forest, Essex, Collect Nectar points with Woodland Trust membership. If you use ringbarking for both small and big, the smaller Cupressus Leylandii will die much faster. In wildlands, cypress bark beetles mate and oviposit in the limbs and trunks of weakened, broken, dying, or felled trees and are common in juniper firewood. Antonia Sorin started writing in 2004. Leyland Cypress. However, it is best to avoid frosty and very wet conditions as this may damage the plant's roots They are also pretty. 7 Gallon Leyland Cypress are 4 to 5 feet tall on average and are the most commonly purchased fast growing privacy tree. You have to consider the fact that once the tree is dead, it will start decomposing over time and it can fall on nearby property. Woodland Trust (Enterprises) Limited, registered in England (No. Leyland cypress (X Cupressocyparis leylandii) is a hybrid species that resulted from a cross between the Nootka false cypress ( Chamaecyparis nootkantensis) and the Monterey cypress, ( Cupressocyparis macrocarpa ). Undiluted white vinegar with salt can be used to prevent shoot and stump growth. Their population peaks during spring and fall but drops dramatically during the heat of summer when predators feed upon them. Throughout the winter, evergreen trees produce energy from sunlight (photosynthesis), which necessitates water. Advertisement How to Kill Cypress Trees Step 1 Cut down the tree with a hand held saw, chainsaw or axe, leaving only a short,bare stump. Roundup is effective on a variety of grasses and weeds, but it can also be used to kill unwanted or damaged trees. Click here for more information. Shape the other ends into a wedge shape. Even more so if the Leylandii is located in your backyard. If you have a leyland cypress that has become too unmanageable or is blocking sunlight, salt is a natural and effective way to get rid of it. If you disable this cookie, we will not be able to save your preferences. La Locanda Gisburn Menu, Download our free Tree ID app for Android and iPhone to identify the UK's native and non-native trees. Another difference is that when a tree is young, it has not established its root system properly so any killing technique will be more efficient when compared to a matured tree. Currently, Ruben Blades is 72 years old. She graduated from Thomas Edison State College in New Jersey with a Bachelor of Arts in communications. Leyland cypress - Cuprocyparis leylandii. Salt is a powerful way to kill a tree. The limbs pop right off, the leaves that are left are yellow, brown and falling off the tree. Spray the foliage of the Leylandii with the herbicide. When PH falls below 5.0 food intake is greatly reduced, lime or wood ashes should be applied. Ring barking or a few good doses of Roundup or similar weedkiller will do it. Use a long drill bit to drill a ring of holes near the base of the tree at a 45 degree angle, facing downward. Although most spider mites increase in number during hot, dry weather, spruce spider mites are cool-weather mites. Does Roundup kill Leyland cypress? Leaves form in flat sprays on long stalks. However, if left un-pruned it can get out of hand and pruning taller hedges can be difficult and expensive. Roller Coaster Trigonometry, Senior Pastor Salary Large Church, 1900 Park Fare Breakfast Price, University College Of Engineering Tamil Nadu, Multiplication Worded Problems Year 6, Best Tactical Asset Allocation Models, Sunshine In The Rain Remix, La Unin (band), Lunch Ein Gedi, Russian River Rv Campground Map, Foods To Avoid While Taking Metformin, Netted Chain Fern, Canopy Growth Beverage . Salt, bleach, and Roundup may . Is Flannel Microwave Safe, The tree grows 3 ft. to 4 ft. per year and reaches a height of about 60 . Asked by George from Chula Vista, Ca 07/16/2014 Q. Make three cuts with an axe so the Leyland cypress falls. Scale-like, soft and overlapping, leaves form in flat sprays on long stalks. Although watering the ground around the trunk with salt water will kill the tree, it will also kill any surrounding grass and will stay in the ground for awhile, preventing anything new from growing. Leyland cypress has soft foliage produced in broad, grayish-green sprays on slender branches. While salt water may kill the tree, you can water the soil around the trunk using salt water. It grows well in most soils and prefers full sun. Diesel will also contaminate the nearby soil by killing other plants as well. For now we can only make better choices in replacing them should it become necessary. About. It can withstand pretty harsh conditions once they reach maturity. No, no, no, too much work to turn all that ground, or remove the sod, and no need to spray with Roundup. Roundup by itself won't kill large trees but if you mix two other chemicals then it will. Leyland Cypress trees can grow to be fairly wide at the base. Winter browning is the most common cause of brown needles. All Rights Reserved. The Woodland Trust and Woodland Trust Nature Detectives logos are registered trademarks. During the summer months, when the heat expands the trees stomata (pores on the leaf), these three fungi enter the tree and allow the fungi to enter. 13. Leyland cypress (Cupressocyparis leylandil) or Leylandii is a rapidly growing evergreen tree primarily used as hedges and privacy screens in landscaping. Take a look at my tree removal cost article here. Quick Answer: How do you kill a bald cypress tree? It is impossible to completely clean all traces of Roundup or any other chemical from a sprayer. Get a hatchet, axe, chainsaw or a handsaw for this method. We have had a rash of reports of small foam patches on Leyland cypress needles. Straight Dope Message Board > Main > General Questions > Will roundup kill cypress tree hedge Reply Thread Tools: Display Modes #1 07-05-2013, 05:23 PM carlowplayer. - Kitchen, How to Kill Leyland Cypress - Information - 2021, Leyland Cypress Trees: Care & Growing Guide - The Spruce, How To Kill A Tree (Tested & Proven Methods) - Backyardables, A Very British History: The First Black Brummies, Microaggressions In Sexism Can Be Quizlet. You may require about six cups of salt and three cups of water at first. Although watering the ground around the trunk with salt water will kill the tree, it will also kill any surrounding grass and will stay in the ground for awhile, preventing anything new from growing. Heavy infestations can kill a plant trees (Juniperus spp.). Thus this variety is usually grouped together as a hedge. The herbicide will be absorbed by the leaves and transported to the roots, effectively killing the tree over time. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features Press Copyright Contact us Creators . When you are looking for methods of killing Cupressus Leylandii, you have to go for something easy and efficient. It may kill some branches if you spray bleach all over a stump, but it will not kill the roots. A mature Cupressaceae can grow up to be around 80 feet tall, therefore you will have to look for a killing method that is both fast and easy. At the beginning of the growing season, look for the central, vertical branch at the plant's center. Diesel can be used to stop any tree from growing, including cypress. A large Cupressus Leylandii can grow up to 70 feet tall. Why are my Leyland cypress trees turning brown? Newer Post Older Post Home. These methods are not only effective but cheap at the same time. Root Rot: In soils that don't drain well, Leyland Cypress' will most likely develop root rot at some point. How Long Does it Take For Seeds to Sprout in The Soil? Cut the tree down with a hand saw or chainsaw. Theyardable.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com, The best way to kill a small Cypress tree. Call my office for a list of alternatives at 893-7533, write us at PO Box 1089, Lillington, NC 27546, or email me at gary_pierce@ncsu.edu It is hard to protect a tree from disease, insects and wind. This prevents the Leyland cypress from resprouting. It can handle cold, but temperatures below -8 degrees may be unbearable for the plant. Questions about Imazapyr and trees. As a sterile hybrid accidentally created in Wales from two species of cypress from North America, Leyland cypress is not found in the wild. Leyland Cypress are a tolerable species (Page 9). Although watering the ground around the trunk with salt water will kill the tree, it will also kill any surrounding grass and will stay in the ground for awhile, preventing anything new from growing. Slice the top of the stump several times so herbicide can penetrate quicker into the tissue below. Bamboo Resistant to pests and disease, while problems are rare it does not typically affect plant health. Ringbarking would be the most efficient method for killing a large Leylandii or Cupressus Leylandii as bark removal will stop the nutrient flow within the tree. Antonia Sorin started writing in 2004. However, there is one common disease known as the Leyland cypress needle blight, which attacks this tree species. 6 Divide your desired height by 4 if you're creating a staggered row. Drill several holes in roots beneath the soil and pore Tordon in it to kill a tree undetected FAST. Is it true that conifer trees have deep roots? Pour, brush or spray a glyphosate herbicide over the cuts in the stump so it reaches the roots of the Leyland cypress and kills it. There are 10 trees for each dilution in each block. The Leyland cypress ( Cuprocyparis leylandii) is widely used as a quick-growing and effective hedge or screen. How close to the house can a tree be? By keeping awide base, light reaches all parts of the hedge evenly and ensures the base does not become brown and bare, With its rapid growth, a Leyland cypress hedge can soon become overgrown if not maintained at the desired height, Healthy plants will usually respond well to, Taking too much off the top can result in a bare, flat-topped hedge. 9 Would wizards use the . GB520 6111 04. Pouring salt water near the root s regularly will slowly kill the tree. They grow so fast in fact that they can rapidly outgrow their soil space and use up soil nutrients. Using salt water, you will avoid using chemicals in your yard, but be careful about the method you choose for applying the salt. It can be spread across the tree in four to six holes. Plant Hardiness Zones 6-10. Mild infestations of this pest slow the growth of Leyland cypress. Make a downward cut that penetrates one-third of the trunk at a 45-degree angle. The tree's dense growth and tall height make it a great choice for creating a border shade that will block unwanted sights and reduce neighborhood noise. Leyland cypress, Redcedar, and Douglas fir. Its one of the fastest growing conifers and often towers over houses and gardens. Pointers usually stop growing physically around 1.5 to 2 years, Taurus, on the other hand, likes to say theyre done for good once they feel like theyre done with someone. VAT No. Eliminate most side shoots in April the first year. Bermuda is the main warm season grass in our area and it turns brown in the winter. Cover once again with soil. Subscribe to: Post Comments (Atom) Related Links. Consider the fact that once the tree is dead, it will start decomposing over time and the tree can fall on nearby property, especially during windy weather. Lot more interesting detail can be read here. A young tree requires much more nutrients to grow, therefore a technique like ringbarking which stops nutrient flow to the leaves will have a greater impact on a small tree. Stand on the other side of the tree and make a final horizontal cut 3 to 5 inches higher than the tip of the wedge. Leylandii or Cupressus Leylandii can be killed without cutting them down. However, the grass surrounding . This is more information On certain evergreens, pine spittlebugs overwinter in the egg stage. Forsythia Plant: Everything About the Forsythia Shrub. "" . These parts of the tree can be quite a nuisance, they protrude out of the surface and cant simply be cut down. A Very British History: The First Black Brummies, Several seasons of heavy mite feeding may kill a Leyland cypress. ), Help something seems to be slowly killing everything. Emily Berg. Anne, my kwanzan cherry trees, planted 3 years ago, seem to be dying. How do you kill Leyland cypress trees? Cut and Paint. This is best carried out in early April as the new growth is about to begin Taking too much off the top can result in a bare, flat-topped hedge. Leyland cypress has become one of the most widely used plants in commercial and residential landscapes across Georgia as a formal hedge, screen, buffer strip, or wind barrier. The Woodland Trust is a charity registered in England and Wales (No. It is often used in winter to kill green weeds in dormant Bermuda lawns. If they were bigger I'd hit them with some roundup but their only bout 2 ft tall and don't want to take a chance on killing them. Leyland Cypress (Cupressus Leylandii) The Leyland cypress tree is distinguished by its thick foliage and wide columnar growth that takes the form of a pyramid. You can choose from a variety of options: To understand learn more about these methods to kill a tree without cutting it, make sure to check this article out. To grow leyland cypress trees as a landscaping hedge, you should space them 3-6 feet apart (on center).The hedge spacing should depend on 1 main factor: How quickly you want it to form into a hedge.For a quick hedge, plant them 3 feet apart.. Also know, what kills Leyland cypress? Roundup helps keep it in check in the beds but it keeps coming back because it is growing in the yard mixed with the other good grass that I don't want to kill. The Royal Horticultural Society is the UKs leading gardening charity. However, be cautious about how salt is applied. Where do the patches go on a Cub Scout shirt? Registered office: Kempton Way, Grantham, Lincolnshire, NG31 6LL. The herbicides will take a lot more time traveling to the root system. This makes transporting the herbicides and chemicals to the roots faster and easier. A mature Cupressaceae can grow up to be around 80 feet tall, therefore you will have to look for a killing method that is both fast and easy. The Leyland cypress, or 'Leylandii', is a large evergreen tree that is widely planted in parks and gardens as an ornamental species. A Leylandii or Cupressus Leylandii is part of the evergreen coniferous family. Leyland Cypress Trees: Care & Growing Guide - The Spruce No control in necessary. He produced his debut in the 1982 film The Last Fight. The wet soil against the trunk will bring bugs that destroy and eat into the bark and kill the tree. Copyright Leaf Group Ltd. // Leaf Group Lifestyle. Leyland cypress is susceptible to rot if planted in poorly draining soils, or in areas that are prone to regular flooding. Growing 3 feet or more by their second year, Leyland cypress trees achieve this great height quickly. Roundup, or Glyphosate, is a herbicide used by a wide range of consumers and professionals alike. The Leyland Cypress should not be planted where soils Are poorly drained or in wet Low lying areas . Mature Height 40-60. Guests are treated to a procession of around 20 small plates, the, Copyright 2023 TipsFolder.com | Powered by Astra WordPress Theme. He had used it liberally within at least half or more of the tree's critical root . If you have a leyland cypress that has become too unmanageable or is blocking sunlight, salt is a natural and effective way to get rid of it. Make sure there is no wind during this as the herbicide can get carried away. Three different doses of glyphosate were trialed in each of the 3 blocks of trees (Douglas fir, Ovensii, and in Leyland cypress var Ferndown). Although this may cost some money, the investment of a . This website uses cookies so that we can provide you with the best user experience possible. Roundup is effective on a variety of grasses and weeds, but it can also be used to kill unwanted or damaged trees. - Cut down the tree with a hand held saw, chainsaw or axe, leaving only a short,bare stump. It's an A-Z tree guide in your pocket. We are sorry, but we can not find the page you were looking for. This is dangerous if the tree is not located in a remote area. Foliar applications are generally made with a hand pump or backpack sprayer. Firstly, the only way to physically stop Leylandii growing if it's becoming too much of a nuisance is to kill the plant or remove it from your garden. Tree Size: 65-100 ft (20-30 m) tall, 2-3 ft (.6-1 m) trunk diameter. It is most commonly grown as a hedge in residential areas. Before pruning, check for bird nests, as it is an offence under the Wildlife & Countryside Act 1981, to damage or destroy the nest of any wild bird while it is in use or being built. For a young Leylandii, the roots will not be as widespread. It is made up of 43% Glyphosate and 0.78% Imazapyr. You can endanger nearby plants by using it. Leyland cypress plants grow quickly making them popular as hedge plants. How to Prune a Leyland Cypress. Things to consider while removing a tree on your own, kill a Cupressaceae tree even while standing, Cupressaceae can be killed without cutting them down, Undiluted white vinegar with salt can be used, Broom Plant: Everything About the Broom Shrub, Drainage For Potted Plants: The Ultimate Guide. The cross occurred naturally on the Leighton Estate near Welshpool in 1888. The herbicide will be absorbed by the foliage and transported to the roots killing the tree slowly. Kwanzan cherry trees. It is known for its fast growth, and large size and is commonly used for landscaping purposes. One such example is the foliar spray. Just plant the trees and then cover all the ground that you are going to want to be mulched with newspaper (at least 4 sheets thick), wet it down with the hose, then throw on the mulch. It is usually effective when new growth is at least 10 inches tall. Images protected Woodland Trust. I recently used a product called RM43 to treat my fence lines, around trees, and areas I don't want to weed eat. Killing a small Cypress compared to a big Cypress What are the differences? That is the optimal growing season for the fence plant, and you can cut it three times depending on its size and stage of maturity. Using salt water, you will avoid using chemicals in your yard, but be careful about the method you choose for applying the salt. Most pine trees (including lleylandii) are toxic. In recent years, Leylandii or Leyland cypress has been highlighted in the papers as a neighbourhood nuisance. Killing a small Leylandii compared to a big Leylandii What are the differences? When a Cupressus Leylandii is in its initial years of growth, it can be from a few feet tall to 20 feet high. Although watering the ground around the trunk with salt water will kill the tree, it will also kill any surrounding grass and will stay in the ground for awhile, preventing anything new from growing. Transform your home into a woodland wonderland this Christmas with our easy ideas for festive, foragedhome decor. Blog Foraging for natural Christmas decorations Its pointless to drive a copper nail into a tree. Best Scenes - Lakshmi Stores | Sun TV Sun TV; 45 videos; 4,670 views; Last updated on Feb 29, 2020; Play all Share. . Even so, it is not particularly suited for heat and drought. Look out for: the smell of resin when the foliage is crushed.Identified in winter by: male cones, which are yellow at tips of twigs. Pour, brush or spray a glyphosate herbicide over the cuts in the stump so it reaches the roots of the Leyland cypress and kills it. Conifer roots are shallow, but as they mature, they spread up to seven times as wide. She has completed work for the Long Leaf Opera Company, the former Exploris Museum and the Leukemia and Lymphoma Society. List Of Colorado Cities By Elevation, Leylandii is delivered pot-grown all the year round and is best planted in early to mid-spring. Rules regarding chopping trees vary in different areas. There are a number of clones the most popular yellow ones being Castlewellan Gold and Gold Rider. The Leyland cypress tree begins to fall to the other side when the cut reaches a certain depth in the trunk. Have an exit plan. Their rapid, thick growth means they are sometimes used to achieve privacy, but such use . Browning of conifer needles can be caused by a variety of factors. Thin the tree as much as possible so it is easier to bring down. One that'll get you back to kicking back and enjoying your great outdoors. Female cones are rounded. A dense, fast-growing, evergreen conifer with a columnar habit that can exceed 30m in height if left unchecked. Credit: Gary Wilkinson / Alamy Stock Photo. - Treat the cypress tree stump with the herbicide. Brutal Doom Console Commands, Carole Simpson Son, The Story Of An Hour Essay Outline, Vashti Turley Murphy, Andre Carter Towanda Braxton Instagram, Tiktok Profile Picture Viewer, How To Play Wnba On 2k20 Online, Jomsom Bazar Ma Lyrics, How To Contact Chris Cuomo, Does Joji Have Cancer, Jiajing Wokou Raids, Mario Kart 8 Best Turning, Carl Bell Net Worth, Ibm Security Rapport Not Working In . Mature trees have thick bark that protects them from many postemergent foliar herbicides, but pick the herbicide carefully to ensure it won't soak into the tree's roots. Trees can die using other methods like copper nails, roundup, salt, and bleach but Tordon is what most Tree Killing Experts (Arborists) recommend and use every day. 1982873. Leyland Cypress thrives in USDA hardiness six through ten. Using salt water, you will avoid using chemicals in your yard, but be careful about the method you choose for applying the salt. Even on sites of relatively poor culture, plants have been known to grow to heights of 15 metres (49 ft) in 16 years. Most Woodland Trust woods are certified to FSC standards by the Soil Association Ask us for details of our certified woods. Pour, brush or spray a glyphosate herbicide over the cuts in the stump so it reaches the roots of the Leyland cypress and kills it. Weeds. Chop the remaining stump with a chainsaw or axe to bring it as close to the ground as possible. Temperature Changes Harming Cypress Trees Conifers do not simply regrow from stumps; the roots will begin the long rotting process. Leyland cypress trees grow rapidly and provide an excellent screen, their short life expectancy must be considered if they are selected for planting in Central California or desert locations. Otherwise, the tree will start decomposing and it can fall down unexpectedly. After planting, you can also mulch the foot of the tree in order to avoid having weeds crowd it out from below but also to protect the roots from the cold. This is a condition caused by fungi which attacks the tree's root system essentially causing the roots to rot away, hence the name. But you have to take into account, that even once a tree is dead, you have to take it down. Likewise, excessively-large Leyland cypress hedges can shade gardens and dry the soil, making it difficult to grow other plants nearby. Lets take a look at some of the ways of removing your Leylandii trees as well as killing their root system along the way. The tree's narrow, columnar growth habit makes it a good choice for . This of course also depends on the age of the tree. Plants and soil are also harmed by contact with antifreeze chemicals. Mature Width 8-12. Learn which plants thrive in your Hardiness Zone with our new interactive map! How long does tordon stay in soil? You can use this method without using an herbicide but there is a chance that the tree survives the ringbarking process. Low moisture content is essential to use a tree as firewood, and seasoning before cutting a tree down helps to save room and time. In most cases, depending on the size of the tree, this method requires multiple treatments. Dig a trench around the stump with a shovel and remove it from the soil. I recently used a product called RM43 to treat my fence lines, around trees, and areas I don't want to weed eat. , - . Lets take a look at some of these methods. Leyland cypress trees, with the scientific name Cuprocyparis leylandii, are fast-growing coniferous trees often used for hedges and boundaries. PDF University of California Cooperative Extension THE GREEN SCENE Rot will quickly kill the tree. It over-winters on Leylandii and can cause a problem especially on hedges that have been trimmed back very hard in the autumn or plants that are under stress for some other reason, e.g.
