Black knot is a blissfully accurate and descriptive name for fungal diseases.
Feb 27, Botanists recommend pruning the tree in the winter to remove any visible knots. Remember, the spores will be released from those knots in spring. Applying a copper fungicide can help prevent the creation and spread of the stores. Dip your shears in a 10% bleach mixture between cuts, and burn the infected branches.
Removal by Trapping Because earwigs hide in cool, moist places during the day and feed only at night, the easiest way to remove them from your plum tree is to trap them in transit. Secure a. For best results, spray the plum tree during its dormant period between the leaf drop stage in late fall and the bud swell stage in early spring. Cut off the plum tree's branches with loppers or a saw.
Since you are killing the tree, the angle and locations of the cuts don't matter as they would if you were pruning. Only use chemical methods of removal if dealing with one or two suckers. Removing too much of the plum tree's root system causes irreparable damage and risks transferring the chemical to. Jun 11, To revive a dying plum tree, remove pests with chemical or organic sprays or kill them with insecticidal soap and water.
Also, remove fungi-affected fruits and branches and spray them with fungicides. Lastly, adjust the watering schedule, fertilize, and use well-draining soil.