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 ...

Bright orange milkweed aphids (Aphis nerii) usually emerge toward the end of summer and feed in clusters on the stems and ...

BYDV was a major topic at last week’s Irish Tillage and Land Use Society’s winter conference. Conor Kehoe reports.

In July winged forms fly off to infest other plants. Breeding stops in autumn when immature aphids seek sites to overwinter. On a healthy tree, woolly aphid is unlikely to do much damage, though it ...