Longhorned borers tend to attack damaged or weakened shrubs and trees, causing branch dieback and.
Aug 31, Answer from NGA. August 31, 0. Sambucus, or elderberry, are deciduous shrubs or trees and it isn't unusual for them to begin dropping leaves in late summer and early autumn, even before the weather cools off. Elderberry are rampant growers and benefit from annual pruning. Aug 29, The trees on the side of the road are all nice and green.
By the way, as to my elderberry fully 1/3 of it's branches are still drooping, leaves dry, berries dried out. The rest of the branches and leaves are doing fine and loaded with berries. The other elderberry is Estimated Reading Time: 5 mins. Aug 14, There is a boring insect, the Sambucus borer, that will cause this kind of damage.
Here is a link to a paper on an insect that attacks the elderberry and may be the cause of your damage. stumphaul.bar, you may see the damage described in the paper.
Sep 21, Both aphids and soft scales produce honeydew and can cause yellowed or curled leaves, but soft scales also can cause the bark to crack and seep a gum-like substance, as well as cause reduced plant growth, discolored rings in fruit, leaves or stems and premature leaf drop.
Pesticides, herbicides, and excessive fertilizers and salts can poison the shrub, causing toxicity symptoms, such as leaf necrosis and branch dieback.
Study your elderberry plant for stains and holes in the bark that seep a liquid substance to identify longhorned. Apr 27, That is unfortunate, but it seems like you have figured out a possible source of the problem. Plants differ in sensitivity (apply vs elderberry) so that would explain differences in timing or severity of symptoms.
Also, some plants escaping injury is highly likely related to drift and exposure. Apr 05, Verticillium wilt is a nasty soilborne disease that affects many plants (here’s a list), including elderberries. Last year I cut off the affected branches, making sure to disinfect my pruners) but I knew when I did it that wouldn’t solve the stumphaul.bars: