The silver birch rod , also know as the white birch , grows from 40 to 50 feet in tiptop with a slender torso that seldom exceed a foot in diameter . The feature that differentiate it from the rest of the birch trees is its flaking sliver / blank bark . The silver birch tree diagram is susceptible to the same job as other birch tree species .
Birch Leafminer
The larvae of the birch tree leafminer burrow into the foliage of the silver birch rod tree looking for food . The first sign of an plague is when green smirch seem on the leave-taking in late spring or other summer . The spots deepen to unsightly brown fleck . While the infestation in and of itself will not kill the tree , it does weaken it , making the tree susceptible to an attack by the bronze birch borer .
Bronze Birch Borer
The bronze birch rod borer can cause a great deal of damage . As with the birch leafminer , it is the larva that causes the damage . They bore into the bast , the tissue paper that carry nutrient to all parts of the tree , and the cambium , the layer that is responsible for growth of stem and roots after the first twelvemonth . The insect ' drilling block the flow of sap , killing the tree . repeat infestations can kill a tree in 2 to 3 year .
Anthracnose
Anthracnose is a group of fungal diseases that assail a wide form of tad trees , including the smooth-spoken birch tree . In birch trees , it do defoliation when there is strange coolheaded and sozzled weather just when the bud break out . One blast will not do permanent damage , but successive infections stunt the maturation and leave the tree candid to other type of stress . The bud could be killed , as could any of the twigs , leaves and any branches that are smaller than 1 inch in diam . Early expiration of leaves will get out the tree in a subvert condition and open to plague by the borer and damage from the winter atmospheric condition . The fungus will seem as pocket-sized , irregular , circular brown spots with a darker brown around the edges .
Slime Flux
gunk flux density is a bacterial disease that attack both the center of the tree and the barque . The slime that ooze from the tree is venomous to areas of the tree responsible for the tree ’s growth , and it will obliterate grass or other develop things it happens to fall on . It also attracts insects , who use it as a food origin .
The wood inside the tree will rick a yellow - chocolate-brown in people of color and have a wetting agent - than - normal consistency . The wood under that bark will show dark streaks in the wood from the current year .
