Check the undersides of the leaves, and you might find the culprit: large groups of aphids and/or the sticky residue they leave behind after feeding. (Or, on plants with tightly-packed leaves like ...
They spread by producing crawling young which find new areas to colonise then produce young. In July winged forms fly off to infest other plants. Breeding stops in autumn when immature aphids seek ...
December gardening tips for houseplants, tress and shrubs. During the winter, houseplants typically need less water than in the summer due to reduced hours of sunlight. Err on the side of caution and ...