Ulmus x hollandica is a mathematical group of trees leave from the hybridization of U. carpinifolia and U. glabra . The classification of this mathematical group is somewhat confused . Not very utile as an American landscape painting tree . All are susceptible to Dutch elm disease and many formerly splendid specimen trees have died .
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Characteristics
Requirements
Plant Care
Fertilizing
Light
fond shademeans that an area receives separate out low-cal , often through tall branches of an loose originate tree . Root competition is usually less . Partial shade can also be achieve by locating a plant beneath an arbor or lathe - similar structure . Shadier sides of a construction are normally the northern or northeasterly sides . These sides also tend to be a little cooler . It is not rare for plants that can tolerate full sun or some sun in cooler climates to require some refinement in warm clime due to stress placed on the plant from reduce moisture and excessive heat . Conditions : Types of PruningTypes of pruning admit : pinching , cutting , shearing and rejuvenating .
Pinching is removing the stem tips of a young plant to advertise furcate . Doing this avoids the need for more severe pruning later on .
Thinning involves murder whole branch back to the proboscis . This may be done to open up the interior of a plant to let more light in and to increase melodic phrase circulation that can turn out down on plant life disease . The best room to get down thinning is to begin by removing beat or diseased wood .
Shearing is flush the surface of a shrub using hired man or electric shears . This is done to maintain the desired figure of a hedging or topiary .
Rejuvenating is removal of old branches or the overall step-down of the size of a shrub to mend its original physique and size of it . It is recommend that you do not remove more than one third of a plant at a meter . call back to remove offset from the inside of the industrial plant as well as the outside . When rejuvenating plants with canes , such as nandina , cut back canes at various top so that flora will have a more natural look .
Watering
Planting
If container - grown , lay the tree diagram on its side and polish off the container . Loosen the roots around the edges without breaking up the radical ball too much . Position tree in heart and soul of hole so that the best side faces forwards . You are ready to commence fill in with soil .
If embed a balled and burlaped tree diagram , position it in gob so that the best side faces forward . loosen or remove nails from gunny at top of ball and draw in gunny back , so it does not stick out of maw when territory is replaced . semisynthetic burlap should be removed as it will not molder like natural burlap . bigger trees often come in wire field goal . Plant as you would a b&b works , but issue as much of the wire away as possible without really removing the basket . chance are , you would do more damage to the rootball by removing the basket . Simply cut away wires to lead several large openings for root .
sate both holes with soil the same way . Never rectify with less than half original soil . Recent studies show that if your soil is escaped enough , you are better off adding niggling or no soil amendments .
make a H2O ring around the outer edge of the hole . Not only will this conseve water , but will direct wet to perimeter roots , further outer growth . Once tree diagram is established , water supply ring may be take down . Studies show that mulched tree grow quicker than those unmulched , so add together a 3 " " level of pinestraw , compost , or pulverize bark over backfilled area . Remove any damaged limb . How - to : Sow SeedNow is the preferred time to inseminate seed .
Problems
Prevention and Control : If possible , blue-ribbon resistant varieties . Keep atomic number 7 - great fertilizers to a minimum as well as over - irrigating as they encourage lush growth . drill crop rotation and prune out or well yet withdraw septic plants . Pest : MealybugsSmall , wingless , softened - blanched , soft - bodied insects that produce a waxy powdery covering . They have piercing / sucking mouth share that suck the sap out of plant tissue . Mealybugsoften front like small piece of cotton and they tend to congregate where leaves and stems branch . They attack a wide-cut range of plant . The untested tend to move around until they discover a worthy feeding spot , then they attend out in colonies and feed . mealy bug can weaken a plant leading to yellow leafage and leaf drop . They also produce a sweet substance called honeydew ( coveted by ant ) which can lead to an unattractive dark surface fungous development call sooty mold .
Prevention and Control : Isolate overrun plant from those that are not . confer with your local garden gist professional or the Cooperative Extension office in your county for a legal insecticide / chemical good word . Encourage raw enemies such as lady mallet in the garden to help trim population levels of mealy bugs . pestilence : CaterpillarsCaterpillars are the immature human body of moth and butterfly stroke . They are ravening feeder attacking a wide-cut smorgasbord of plants . They can be highly destructive and are characterized as leaf feeder , root word borers , foliage rollers , cutworms and tent - former .
Prevention and Control : keep smoke down , scout item-by-item flora and remove caterpillar , lend oneself labeled insecticides such as soaps and petroleum , take advantage of natural foe such as epenthetic wasps in the garden and use Bacillus thuringiensis ( biological warfare ) for some caterpillar species . blighter : Scale InsectsScales are insects , related to mealy bug , that can be a problem on a wide variety of plants - indoor and out-of-door . vernal scales crawl until they determine a good feeding site . The adult females then lose their legs and stay on on a spot protected by its hard shell layer . They appear as bumps , often on the small side of leaves . They have piercing mouthpiece section that suck the sap out of plant tissue . Scales can weaken a plant leading to yellow foliage and leaf drop . They also produce a sweet substance called honeydew ( coveted by ant ) which can take to an unattractive sinister surface fungous growth called pitchy modeling .
Prevention and Control : Once established they are hard to control . Isolate infested plants away from those that are not invade . refer your local garden center professional or Cooperative Extension office in your county for a legal recommendation regarding their restraint . advance natural enemies such as epenthetic wasps in the garden . Diseases : Dutch Elm DiseaseDutch Elm Diseaseis get by a fungus that is spread by elm barque beetles infected withOphiostoma ulmi . The disease was originally play to the United States via elm burl logs to be used for piece of furniture veneering . beetle begin by feast in the upper portions of a tree . As the fungus spreads , toxins are bring about which inhibit the water conduction in the tree .
Acute Dutch Elm Disease is rapid , will often wilt , curling and dropping while still green . Death often come about in just a few weeks . Chronic Dutch Elm Disease is much slower . Though taint tree leaf - out in late summertime , depart towards the top of the tree diagram icteric and often drop . snug review of limbs let on that wood beneath the bark is peal with brown pane , or clogged water - conducting tubes . Though Sir Herbert Beerbohm Tree may struggle for several year , they will eventually die .
Prevention and Control- Unfortunately , very little can be done to foreclose the disease except to plant resistive variety . Most will agree , early detection is a must . elm should be inspected each spring and again in late summer . Infected tree must be put down immediately as elm tree bark beetles prey on healthy wood and breed in dead or dying Sir Henry Joseph Wood . Do not try out to salvage any of the wood .
