petiole borer

Listing 11 - 13 from 13 for petiole borer

Questions On Jade Plants
... new leaf growth near veins or at the juncture of the leaf petiole attachment to the stem, then it is one of the insect pests. ... you see small white cotton looking pieces at the juncture of the leaf petiole and stem, then it is an invasion of cottony cushion scale. If ... these slimy areas are developing. One last thought: it could be a borer of some kind that has taken up residency. Look carefully and see ...
www.ext.nodak.edu

Anthracnose - A Fungal Disease of Shade Trees
... loss of leaves, which over several successive years weakens the tree and predisposes it to borer attack and winter injury premature leaf drop, which lessens the shade and ornamental value of ... main leaf veins and extending to the margin (Fig. 1). Infected leaves fall when the petiole is girdled or when several lesions enlarge and coalesce to form large, dead blotches. After ...
www.ext.vt.edu

resources
... , and this coprinus is not harmful to the seedling next to it rhododendron red leaf petiole and new growth. The sticky hairs trap bugs permanently loopers love leaves but some leaves ... of an R.calendulaceum blossom a small brown beetle 1/8 inch probably a bark borer a small ladybug © The pictures are copyrighted 2003 and may be reproduced only with permission ...
www.rhodies.org