1 Give trimmed plants a thorough soaking and a boost with a high-potash fertiliser, such as tomato feed. 2  Geraniums are fairly trouble free although they can be attacked by vine weevil larvae, slugs and snails. 3  Also, in dry conditions, they may suffer from powdery mildew.
The stipula is a scale which forms the future bud, and is situated at the insertions of the leaf. - The thorn, acculeus, is a sharp brittle point, which is so slightly fastened to the plant, as to be taken off without tearing the other parts.
Word Origin and History for stipule Expand n. small appendage at the base of the petiole of a leaf, 1793, from French stipule, from Latin stipula stalk (of hay), straw. Online Etymology Dictionary, Â© 2010 Douglas Harper Cite This Source stipule in Science Expand