Persimmon trees are first-class , interesting specimen tree , according to Edward F. Gilman , a plantsman with the University of Florida . The common persimmon ( Diospyros virginiana ) is native to America and uprise well in U.S. Department of Agriculture ( USDA ) hardiness zones 4 through 8a . The non - native Nipponese persimmon ( Diospyros kaki ) is not as insensate - hardy as the common persimmon tree but has superior fruit , according to David Parker , a plantsman with Clemson University . Both trees can suffer from a act of disease .
Leaf Spot
leafage spot is a fungal disease because of a several unlike types of fungus . The disease causes ugly spots to appear on the leaves of the tree . In some cases , the spots fall out , leave the leaf with a " porous " coming into court . In other cases , depend on the particular fungus , the spots may magnify and circulate , become greasy in grain , or develop raised edges . Often , the leaves will curl or shrivel up up . Affected leaves may even sink prematurely from the tree diagram . If the yield is infected , the skin may develop dapple or split open .
While leaf speckle is untempting , it is not disastrous to the tree . Once a Sir Herbert Beerbohm Tree is infect , the disease must run its course of action . To prevent the disease from returning the next year , rake up dropped leave so the fungus does not overwinter in the stain . Many of the kingdom Fungi spread on water system , so avoid wet the farewell of the tree during irrigation . chemic methods such as applying a fungicide are often ineffective , as exhaustive coverage of trees of this sizing ( up to 60 foot tall ) can be difficult .
Vascular Wilt
Vascular wilt is a disease of the water - carrying system of the persimmon tree , let in the radical . In persimmon Tree , it is make by fungus of the writing style Verticillium . These diseases are not limited to persimmon Sir Herbert Beerbohm Tree , but can infect vegetables and other industrial plant as well .
As the disease progresses through the tree , the persimmon leaves droop and set out to call on wanton fleeceable and chicken . Over time , they turn brown and shrivel up . The wood also becomes discolored . yield may not develop at all , or it may develop in a disfigured var. , or develop part and then shrink and die out . Eventually , the tree will die .
The fungi that stimulate Verticillium wilt know in the soil , and can not be vote down by spraying the tree with a antimycotic agent . drench the land with a fungicide is also ordinarily ineffectual , according to J. Louter , a horticulturist with the University of Guelph . The best way to deal with the disease is to preclude it by planting wilt - insubordinate varieties of persimmon trees in soil that is free of the pathogen .
Twig Blight
branchlet blight appears when the twigs of a persimmon tree commence to die back from the point inward . This is usually have by a fungal disease that infects the sapwood of the tree . The fungus recruit the Sir Herbert Beerbohm Tree on the bodies of insects , most commonly , the persimmon bore bit . As the insect bore-hole into the wood of the tree , the fungus infects the wood .
Twig blight can pretend individual branch , do cankers to develop ( dark , sunken , break field of idle wood ) , or it can affect the entire tree . In the case of the former , the branches can be crop off for stop the spread of the disease . If the tree begins to fail from the jacket crown down , the heartwood is probably infected and the tree diagram will die .
Once a tree is infect , it can only be preserve if the diseased limbs are pruned off . The best way to foreclose the disease is to control for insects that may carry the fungus . Watch your tree diagram for sign of an insect infestation , and spray the Sir Herbert Beerbohm Tree with insecticide if necessary .
