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Dummer. ゛☀
2017年08月30日
Dummer. ゛☀
It’s no wonder the scientific name of the exceptional Bismarck palm is Bismarckia nobilis. It’s one of the most elegant, massive and desirable fan palms you can plant. With a stout trunk and symmetrical crown, it makes a great focal point in your backyard.
Planting Bismarck Palm Trees Bismarck palms are huge, gracious trees native to the island of Madagascar, off the east coast of Africa. If you are planting Bismarck palm trees, be sure that you reserve enough space. Each tree can grow to 60 feet high with a spread of 16 feet. In fact, everything about this attractive tree is oversized. The silvery-green copalmate leaves can grow to 4 feet wide, and it isn’t unusual to see trunks as thick as 18 inches in diameter. Experts do not recommend growing Bismarck palms in a small backyard since they tend to dominate the space. Growing Bismarck palms is easiest in U.S. Department of Agriculture plant hardiness zones 10 through 11, since the species can be damaged by freezing temperatures. Bismarck palm care is not difficult or time-consuming once the tree is established in an appropriate location.
Growing Bismarck Palms Plant this stunning palm in full sun if you can, but you can succeed at growing Bismarck palms in partial sun too. Select a wind-protected area if possible, since these trees can be injured in windstorms. Soil type is not critical, and you’ll do fine planting Bismarck palm trees in either sand or loam. Keep an eye out for soil deficiencies. When you are trying to care for a Bismarck palm tree, you will have problems if your soil lacks potassium, magnesium or boron. If a soil test reveals a deficiency, correct it by using a controlled-release granular fertilizer of 8-2-12 plus micronutrients.
Bismarck Palm Care Aside from mineral deficiencies, you won’t have much to worry about to care for a Bismarck palm tree. Irrigation is important when the palm is young, but established palms are drought tolerant. They also resist disease and pests. You can prune this palm during every season. However, only remove leaves that are completely dead. Cutting partially dead leaves attracts pests and depletes a palm’s potassium supply.
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Dummer. ゛☀
2017年08月30日
Dummer. ゛☀
Bismarck palm is a slow-growing, but ultimately massive palm tree, not for small yards. This is a landscaping tree for monumental scale, but in the right setting it can be a beautiful and regal tree to anchor a space and accent a building. Watering a new Bismarck palm is crucial for ensuring it grows and thrives.
About the Bismarck Palm The Bismarck palm, Bismarckia nobilis, is a large sub-tropical palm tree. It is a solitary palm that is native to the island of Madagascar, but which does well in zones 9 through 11 in the U.S. thriving in areas like Florida and southern Texas. It grows slowly, but can go up to 50 feet (15 m.) high with a crown that can reach up to 20 feet (6 m.) across.
How to Water Newly Planted Bismarck Palms A Bismarck palm is a big investment, both in time and money. The tree only grows one to two feet (30 to 60 cm.) per year, but over time it grows quite large. To ensure that it will be there for years to come, you need to know when to water Bismarck palms, and how. Not watering a new Bismarck palm could have disastrous consequences. Bismarck palm watering can be tricky. To get it right, you need to water your new palm so that its roots stay moist for the first four to six months, without letting it get waterlogged. Good drainage is crucial, so before you plant the tree, make sure the soil will drain well. A good basic guideline is to water the palm every day for the first month and then two to three times per week for the next several months. Continue watering once a week for about the first two years, until your palm is well established.
A good rule of thumb for the amount of water you should use at each watering is to go by the container the Bismarck palm came in. For example, if it arrived in a 25-gallon (95-liter) container, give your new tree 25 gallons of water each time, a little more in hotter weather or less in cooler weather. New Bismarck palm watering is a real commitment, but this is a grand tree that needs care to thrive, so don’t neglect it.
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Dummer. ゛☀
2017年08月30日
Dummer. ゛☀
If you have a large property that needs some shade, consider growing beech trees. American beech (Fagus grandifolia) is a stately tree that makes a big impression when grown singly on an open site or when used to line driveways on large estates. Don’t try growing beech trees in an urban setting though. The branches on this huge tree extend low on the trunk, creating an obstacle to pedestrians, and the dense shade makes it nearly impossible to grow anything under the tree.
Beech Tree Identification It’s easy to recognize a beech tree by its smooth, gray bark, which the tree keeps throughout its lifespan. In shady sites, beech trees have a massive, straight trunk that soars to a height of 80 feet or more. The crown stays small but dense in shade. The trees are shorter in full sun, but they develop a large, spreading crown.
Beech tree leaves are about 6 inches long and 2 ½ inches wide with saw-tooth edges and lots of side veins. The flowers generally go unnoticed. Small, yellow male flowers bloom in round clusters along the branches and tiny, red female flowers bloom at the ends of the branches in early spring. After pollination, the female flowers give way to edible beech nuts, which are enjoyed by a number of small mammals and birds. The American beech is the variety commonly seen in the United States, although there are several types of beech trees found throughout Europe and Asia. The American hornbeam (Carpinus caroliniana) is sometimes called blue beech, but it is an unrelated species of small tree or shrub.
Beech Tree Planting Plant beech trees in a good, rich, acidic soil that isn’t compacted. It likes moist, well-drained soil. The dense crown spreads 40 to 60 feet at maturity, so give it plenty of room. Beech trees live 200 to 300 years, so choose the site carefully. Dig the planting hole two to three times wider than the root ball to loosen the soil around the planting area. This encourages the roots to spread into the surrounding soil rather than staying in the hole. If the soil isn’t particularly rich, add a few shovels full of compost to the fill dirt. Don’t add any other amendments at planting time.
Care of Beech Trees Newly planted beech trees need plenty of moisture, so water them weekly in the absence of rain. Mature trees withstand moderate drought, but they’ll do best with a good soaking when you’ve been a month or more without a drenching rain. Spread a 2 or 3 inch layer of mulch over the root zone of young trees to help the soil retain moisture. Once the dense crown develops, mulch is no longer necessary, but it keeps the bare ground around the tree looking neat. Beech trees need regular fertilization. Spread the fertilizer over the root zone and then water it in. Use a pound of 10-10-10 fertilizer for each 100 square foot of the root zone. The root zone extends a foot or so beyond the canopy of the tree.
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Dummer. ゛☀
2017年08月30日
Dummer. ゛☀
With showy, white flowers that bloom in summer and attractive, glossy evergreen foliage, beauty leaf trees are tropical gems that deserve their name. They grow slowly to a height of up to 50 feet with a lush canopy that spreads 30 to 50 feet. Their intense fragrance and dense shade make them highly desirable specimen trees, but as you’ll see, they aren’t suitable for most North American landscapes.
What is a Beauty Leaf Tree? Beauty leaf tree (Calophyllum inophyllum) is a broadleaf evergreen native to Australia, Eastern Africa and Southern India to Malaysia. According to most Calophyllum tree info, lumber from a beauty leaf is very hard and of high quality. In shipbuilding it is used to make masts and planks, and it is also used to build fine furniture. All parts of the Calophyllum beauty leaf are considered poisonous. The fruit is so toxic that it can be ground and used as rat bait. The sap is fatal when introduced into the blood stream, and was once used as arrow poison.
Beauty leaf trees make a fine windbreak or hedge trees. They excel as street trees in areas that aren’t frequented by pedestrians. Calophyllums can also be used for espalier trees. Calophyllum beauty leaf is a great tree for frost-free coastal areas. Sandy soil, strong winds and salt spray aren’t a problem. High winds give the trunk a lovely, gnarled and twisted character. The branches are strong and don’t break when blown about.
Can You Grow Calophyllum Trees? Beauty leaf trees are only for gardeners in frost-free areas. Rated for USDA plant hardiness zones 10b and 11, they die when exposed to freezing temperatures. If you live in a climate where you can grow a beauty leaf tree, you should consider the impact the fruit has on the landscape before planting the tree. Hard, golf ball-sized fruit drop from the tree when ripe. The fruit serves no useful purpose since it is poisonous and is not attractive to wildlife. Leaves and fruit create a significant litter problem and falling fruit is a hazard to anyone who wants to enjoy the shade of the tree’s dense canopy.
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Dummer. ゛☀
2017年08月30日
Dummer. ゛☀
A banyan tree makes a great statement, provided that you have enough space in your yard and the appropriate climate. Otherwise, this interesting tree should be grown indoors. Read on to learn more.
Banyan Tree Info The Banyan (Ficus benghalensis) is a fig tree that begins life as an epiphyte, germinating in the crevices of a host tree or other structure. As it grows, the banyan tree produces aerial roots that hang down and take root wherever they touch the ground. These thick roots actually make the tree appear to have several trunks.
Growing a Banyan Tree Outdoors On average, these trees have high moisture needs; however, established trees are drought tolerant. They enjoy sun to partial shade as well. Banyan trees are easily damaged by frost and are, therefore, best grown in warmer climates such as those found in USDA plant hardiness zones 10-12. Growing a banyan tree requires a lot of space, as mature trees become quite large. This tree should not be planted near foundations, driveways, streets or even your home, as its canopy alone can spread quite far. In fact, a banyan tree can get up to about 100 feet tall and spread over several acres. The leaves of banyan trees can reach anywhere from 5-10 inches in size. One of the largest banyan trees on record is in Calcutta, India. Its canopy covers 420 meters and stands over 80 feet tall, with more than 2,000 roots.
Banyan Tree Houseplant Banyan trees are commonly grown as houseplants and are well adapted to indoor environments. Although the banyan tree is better somewhat pot bound, it’s a good idea to repot this plant at least every two to three years. The shoot tips can be pinched back to promote branching and help control size. As a houseplant, banyan trees prefer well-drained but moderately moist soil. The soil should be allowed to dry out between waterings, at which time it needs to be thoroughly saturated. However, caution should be taken to ensure that it doesn’t sit in water; otherwise, leaves may yellow and drop. Provide the banyan tree with moderately bright light and maintain indoor temperatures around 70 F. (21 C.) during summer and at least 55-65 F. (10-18 C.) throughout winter.
Propagating Banyan Trees Banyan trees can be propagated from softwood cuttings or seeds. Cuttings can be taken from the tips and rooted or by eye cuttings, which require a piece of stem about a half inch below and above a leaf. Insert cuttings into a suitable rooting medium, and within a couple of weeks, roots (or shoots) should begin to develop. As parts of the banyan tree plant are poisonous (if ingested), caution should be used while handling it, as sensitive individuals may be susceptible to skin irritations or allergic reactions.
If choosing to grow banyan from seed, allow seedheads to dry on the plant before collecting. Keep in mind, however, that a growing banyan tree from seed can take some time.
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Dummer. ゛☀
2017年08月30日
Dummer. ゛☀
The Emerald ash tree borer (EAB) is an invasive, non native insect discovered in the U.S. during the last decade. Ash borer damage is significant in all species of North American ash trees that become infected. Susceptible trees include white, green and black ash. Know where your ash trees are located and scout for the pest in June and July as the first step to prevent ash borer from causing serious or deadly damage.
Emerald Ash Borer Characteristics The emerald ash borer is so named for its emerald green color. The insect is about ½ inch long and leaves D-shaped holes when exiting the ash trees interior. The pest lays eggs and leaves the larvae to hatch inside valuable ash trees, where they create serpentine tunnels that interfere with the tree’s ability to move water and nutrients throughout its tissues. Learning how to protect ash trees from ash borer can save your trees.
How To Protect Ash Trees From Ash Borer Controlling the spread of emerald ash borer begins with keeping ash trees healthy and unstressed. The insect is usually spread through human activities, such as moving infested firewood. Prevent ash borer by inspecting firewood closely before purchasing and buy locally when possible. Do not transport firewood if you live in an area that has an ash borer population. Identifying ash trees is another step to lessen ash borer damage. Insecticidal treatments may slow damage to trees that are valued for shade or historic purposes. Ash tree borer treatment should be applied in May before adult insects emerge.
Ash tree borer treatment is not needed until the emerald ash borer is spotted within a 15 mile radius, unless symptoms are visible on your ash trees. Symptoms include canopy dieback, D-shaped exit holes and bark splitting on your ash trees. If you see what appears to be ash tree borer damage, you may contact a certified arborist about how to protect ash trees from ash borer and what ash tree borer treatment works best in your situation. The tree professional may do systemic injections to kill larvae already inside the tree. Visible emerald ash borer characteristics and damage may be lessened with soil treatments and bark and foliage sprays.
For the homeowner who spots ash borer damage and wishes to do their own ash tree borer treatment, a soil application of imidacloprid can be applied, (such as Bayer Advanced). Most chemicals to control ash borer damage require a pesticide applicator license for purchase.
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Dummer. ゛☀
2017年08月30日
Dummer. ゛☀
Ash trees make graceful landscape plants, but when your trees are stressed or plagued by pests, they may begin to shed bark in response to the damage they’re experiencing. As a good ash tree owner, it’s your job to determine if ash tree bark peeling is a sign of environmental problems or if the bark coming off ash trees is due to boring beetles. Read on for more information on these common ash tree problems and their management.
Shedding Bark on Ash Trees When your ash tree is shedding bark, it may feel like time to panic, but try to keep your cool, often, this is simply indicating an easily correctable environmental problem. Ash trees typically grow on or near the banks of permanent water sources like streams and ponds. Because of this, they’re not very adaptable when the weather dries out and they can’t get the moisture they require. Often, they’ll shed bark in protest, but quick action on your part can slow or stop your ash tree losing bark. Provide the tree in question with ample water, up to 210 gallons a week during the summer for a tree with a 15-foot wide canopy, being sure to water at the drip line instead of near the trunk. An irrigation system can help keep your thirsty ash tree supplied with water.
Other stressors like a sudden change in environment, such as trenching, removing the grass around the tree, herbicide use, over-fertilization or the failure of your irrigation system can also end in bark shedding. Water a stressed tree well, withholding fertilizer until the tree show signs of improvement.
Ash Tree Losing Bark from Emerald Ash Borers and Sunburn Over-pruning is a common cause of an ash tree bark problem; the removal of branches that once shaded the trunk can lead to sunburn on these previously protected tissues. Sunburned bark may peel and fall off the tree in question and emerald ash borers can find their way to these easy to penetrate areas of tissue. Once sunburn has occurred, there’s no way to repair it but you can prevent it in the future by being careful to prune out less than a quarter of the living branches of an ash tree during any season. Check your damaged tree’s trunk for small holes before dressing the wounded areas with a trunk wrap or painting it with white latex paint mixed with equal parts water. If tiny d-shaped holes are peppered in the areas of peeling bark, you have a much more serious problem on your hands. This is the telltale sign of the emerald ash borer, a serious pest of ash trees. Trees that have been infested a while may have many dying branches and aggressive shoot growth around the base of the tree in addition to the bark peeling and holes in the trunk.
Generally, borers are a death sentence for a tree – these insect pests spend most of their lives inside affected trees, causing a slow decline as they chew through the transport tissues that keep the tree hydrated and nourished. Once these are severed, it’s only a matter of time before the tree dies. A large tree can present a serious hazard to objects and people on the ground below – have your tree evaluated by an arborist if you suspect borers. Removal is typically your only option.
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Dummer. ゛☀
2017年08月30日
Dummer. ゛☀
Homeowners love the claret ash tree (Fraxinus angustifolia subsp. oxycarpa) for its fast growth and its rounded crown of dark, lacy leaves. Before you start growing claret ash trees, be sure your backyard is big enough since these trees can grow 80 feet tall with a 30 foot spread. Read on for more claret ash tree information.
Claret Ash Tree Information Claret ash trees are compact, fast growing, and their deep green leaves have a finer, more delicate look than other ash trees. The trees also offer a terrific autumn display, since the leaves turn maroon or crimson in fall. Claret ash growing conditions influence the ultimate height of the tree, and cultivated trees rarely exceed 40 feet in height. Generally, the tree’s roots are shallow and do not turn into problems for foundations or sidewalks. However, it is always wise to plant ash trees a good distance from homes or other structures.
Claret Ash Growing Conditions Growing claret ash trees is easiest in USDA plant hardiness zones 5 through 7. When it comes to providing good claret ash care, don’t worry too much about the type of soil in your backyard. Claret ash trees accept sandy, loamy or clay soil. On the other hand, sunlight is critical. Plant claret ash trees in full sun for fastest growth. If you read up on claret ash tree information, you’ll find that the tree will not tolerate frost, high winds or salt spray. However, this ash is quite drought tolerant once established. Take care not to weed-whack around your young tree. Ash bark is very thin when the tree is young and it can be easily wounded.
Raywood Claret Ash When you are growing claret as trees, you should consider ‘Raywood,’ an excellent Australian cultivar (Fraxinus oxycarpa ‘Raywood’). This cultivar is so popular that the claret ash is also called the Raywood ash tree. ‘Raywood’ thrives in USDA hardiness zones 5 through 8. It grows to 50 feet high with a 30 foot spread. You should use the same cultural practices for ‘Raywood’ that you would use generally for claret ash care, but be a little more generous with irrigation.
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Dummer. ゛☀
2017年08月30日
Dummer. ゛☀
Ash trees are popular and attractive landscape trees. However, pruning ash trees is essential if you want healthy, vigorous specimens. Cutting back ash trees appropriately helps to establish a strong branch structure around a central leader. It can also reduce diseases and limit pest damage. Read on to learn how to prune ash trees.
Reasons for Pruning Ash Trees Ash trees are handsome deciduous trees, native to North America. They offer attractive, rounded crowns in the growing season and beautiful autumn colors. The wood is hard, but agile, and most baseball bats are made of ash. Ash trees have an opposite branching structure. The opposing branch growth usually requires pruning to keep the tree balanced. In addition, the tree can be attacked by diseases and pests that can be controlled by pruning.
Cutting Back Ash Trees Trimming your tree is not difficult, but it helps if you follow a few ash tree pruning tips. When to Prune Ash Trees When to prune ash trees depends in part on why you are making the particular pruning cut. Unless you are pruning to remove dead and diseased branches, you should take care to prune in late winter, while the tree is still dormant. For example, if you must remove live branches to allow additional sunlight and air to circulate inside the tree crown, wait until winter to act.
Prune out broken, diseased, infected or dead ash tree branches whenever you spot them. The sooner you remove these branches, the less likely it is that decay-producing fungi spread to other areas of the tree. When you inspect the tree for problem branches, be sure to look at the underside of tree bark for an S-shaped pattern. This indicates the presence of the Emerald Ash wood-boring beetles, a pest that can quickly kill the tree. If you notice defoliation of some branches, it may be a sign of anthracnose. Any signs of brown areas on leaves or cankers on the branches should be your call to start pruning back ash trees in the very near future. These pests weaken the tree and can create serious problems if not addressed quickly by trimming back ash trees.
How to Prune Ash Trees Use a three-step trimming method to remove branches from an ash tree. First, make a cut on the underside of the diseased or damaged branch. This cut should pass a quarter of the way through the branch about half a foot from the branch collar. Next, cut off the branch completely, making the cut one inch past the initial cut. This cut should be made from the top side of the branch. When you finish this cut, the branch will fall away. As a final step, remove the branch stump.
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Dummer. ゛☀
2017年08月30日
Dummer. ゛☀
Many native deciduous trees, like ash, can leak sap as a result of a common bacterial disease called slime flux or wetwood. Your ash tree may ooze sap from this infection, but you might also see, coming from the bark, foaming white material that does not look at all like sap. Read on for information about why an ash tree is dripping sap.
Why is My Tree Leaking Sap? The bacterial infection called slime flux results when bacteria grows inside a wounded tree. Several types of bacteria are implicated, although botanists have not identified a main culprit. These bacteria generally attack an ill tree or one that is stressed from too little water. Usually, they enter through a wound in the bark. Inside the tree, fermentation occurs from the bacteria and carbon dioxide gas is released. The pressure of the gas release pushes the ash tree’s sap through the wound. Sap spills out, making the outside of the tree trunk look wet. An ash tree leaking sap is very likely infected by these bacteria. This is especially true if there is foam mixed with the sap.
Why is My Ash Tree Oozing Foam? The wet areas of sap on the outside of your ash tree become breeding grounds for other organisms. If alcohol is produced, the sap foams, bubbles and produces an awful smell. It looks like an ash tree oozing foam. You may see many different types of insects and insect larva coming to dine on the spilled sap and foam. Don’t be alarmed, since the infection cannot be spread to other trees by means of insects.
What to Do When an Ash Tree is Dripping Sap The best offense in this case is a good defense. Your ash tree is far more likely to get infected by slime flux if it suffers from drought stress. In addition, the bacteria usually seeks a wound to enter. You can help the tree to avoid this infection by watering it regularly when the weather is dry. One good soaking every two weeks is probably enough. And take care not to wound the tree trunk when you are weed-whacking nearby. If, despite these precautions, your tree continues to ooze sap, there is little you can do to help the tree. Remember that most trees with slime flux do not die of it. A small infected wound is very likely to heal on its own.
Other Reasons My Ash Tree is Dripping Sap Ash trees are often are infested by aphids or scales, both small but common insects. It is possible that the liquid you identify as sap is actually honeydew, a waste produce produced by aphids and scales. Honeydew looks like sap when it falls like rain from a tree badly infected with these bugs, coating bark and leaves. On the other hand, don’t feel you need to take action. If you leave aphids and scale alone, no grand harm comes to the tree and predator insects usually step up to the plate. Other insects affecting this tree, and possibly causing it to leak sap, include the emerald ash borer.
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