TREE WOUNDS AND DISEASES 



to no particular disease, though, when growing 

 amongst other trees, at least two species of 

 fungi attack damaged portions of the stem. 

 Heavy crotched branches are apt to get severed 

 from the trunk. Black knot is prevalent in 

 both the wild and cultivated cherry. The 

 only recognised remedy is cutting off and 

 burning affected branches. When such occurs 

 in the stem, cutting out the diseased portion 

 is recommended ; but pruning must be care- 

 fully performed in the case of the cherry, as it 

 bleeds profusely. Aim at such a method of 

 treatment that quick healing will be brought 

 about, for constant loss of sap is a drain on the 

 constitution of the tree. 



Chestnut (Horse) is very liable to have its 

 branches broken over, owing to the brittleness 

 of the wood. It is also subject to fungus 

 attacks, and squirrels eat the young shoots. 

 Wounds occasioned by pruning should receive 

 a dressing of tar every third year until the 

 sore has disappeared. The wood leopard moth 

 attacks the timber. 



Chestnut (Sweet or Spanish). Few diseases or 

 insect pests attack this chestnut. Neither is 



