Daphne and Crinodendron Problems in Northern England: Water and Insects

Diagnosing Issues on Newly Planted Daphne and Crinodendron

Both shrubs planted last autumn show distress: Crinodendron leaves blackened and died; Daphne has pale brown spots on top with raised, cratered undersides.

Crinodendron

Likely overwatering. These Chilean natives hate wet feet. Reduce irrigation; ensure sharp drainage. If new shoots improve, water was the issue.

Daphne

The cratered spots suggest insect feeding (possibly Daphne-laurel leaf miner or sap-sucking insects attracted to flowers). Treat with insecticidal soap or malathion; monitor for new damage.

General Care

• Both prefer well-drained, humus-rich soil in partial shade.
• Mulch to conserve moisture without waterlogging.
• Fertilize lightly with ericaceous feed in spring.

Adjust water first; if Daphne spots persist after insecticide, reassess for fungal rust.