What's eating my rock hyssop?

Rock Hyssop is a tough, aromatic sub-shrub with good pest resistance — its volatile oils repel many insects. Aphids occasionally colonise new growth; spider mites are a risk in dry, sheltered spots; and rabbits may nibble young plants in spring. It is generally one of the lower-maintenance herbs in the garden pest calendar.

Soft colonies on shoot tips in spring; leaves curl and growth is stunted; honeydew makes foliage sticky Squash by hand or spray with insecticidal soap. Strong-scented companion plants (e.g. alliums) nearby can reduce colonisation. Natural predators usually bring populations under control quickly.

Pale stippling on upper leaf surfaces and fine webbing on undersides; worse in hot, dry microclimates or against sunny walls Increase watering frequency to reduce plant stress. Spray with insecticidal soap or diluted neem oil, covering undersides. Improve air movement around the plant.

Clean cuts to stems near ground level, especially on young plants in spring; whole plants can be removed overnight Protect newly planted specimens with wire netting guards until established. Rabbits tend to avoid mature, strongly aromatic plants, so young plant protection is the priority.