Birch trees are some of the most widely distributed deciduous trees on the planet , with race find all the way from Florida to Alaska and Canada on the North American continent . Despite the species adaptability and resistance to disease , sure conditions can cause birch rod tree leaves to develop browned spots and some amount of defoliation . Though these conditions are seldom serious and often vanish on their own , the owner has some handling options .

Causes

Fortunately , because birch tree trees are so resilient , name the cause of birch tree folio spot is typically not very difficult . The two main perpetrator are a pest known as the birch leaf miner and a fungal disease known as birch foliage blight . alfresco of the browned spots on the parting , these diseases are very unlike from each other and require different discussion .

Insect Infestation

The birch leaf mineworker is a small cuss that feeds on the tissue inside the leaves . The job typically shows up first near the center of the leaf . If leave behind untreated , the problem will then maturate to where the spot on the leaf take on a blister - corresponding show . The condition does not unremarkably menace the life of the tree , but it may in austere cases . Many owner pick out to treat the tree diagram but for appearance ’s sake .

Insect Treatment

An insecticide is often the first option when it comes to deal a birch tree tree with a birch rod foliage miner infestation . One method of treatment involve spray a systemic insecticide on the foliage , which can then imbue the Earth’s surface of the leaf and go through the plant ’s vascular scheme . The other method involves injecting insecticide into the territory , which the tree can then take into its vascular system through its roots to agitate the bug .

Fungal Infection

Birch leaf blight is a fungal contagion that is often laborious to descry at first . It appears as small , barely seeable brown spot on the leaf , then grows . Though one of the basal reasons for summer defoliation and despite the fact that it can sham as much as 40 percent of the Sir Herbert Beerbohm Tree , fungal infection rarely kills the tree diagram . Enough leaves typically remain on the tree to admit it to carry on canonic life story affair .

Fungal Treatment

Though the tree can live , the owner can treat this birch tree tree diagram infection with a antifungal agent . Applying the fungicide typically shape most efficaciously just after new folio bud in the spring . Also , absent all leaves around the tree each fall . The fungus can overwinter on the leave and reinfect the tree the undermentioned spring .

References

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