Troubleshooting
The Governor lupine problems — and how to fix them
The Governor lupine (Lupinus x regalis 'The Governor') is generally forgiving once you match its basics, but a few issues come up again and again. Here is what each one looks like, why it happens, and the fix.
Lupin aphid (Macrosiphum albifrons)
Large grey-green aphids can colonise flower stems and young shoots in enormous numbers in late spring, causing distorted growth and sticky honeydew. Spray with insecticidal soap or neem oil; large infestations may require systemic treatment. Ladybirds and parasitic wasps provide natural control.
Powdery mildew
White powdery coating on leaves, typically appearing after flowering in warm, dry spells followed by humidity. Improve airflow by removing lower foliage, avoid overhead watering, and apply a potassium bicarbonate spray or fungicide as needed. Remove badly infected growth promptly.
Short lifespan and decline
Russell lupin hybrids are inherently short-lived (3–5 years) and often decline rapidly after their best season. Replant from fresh seed or basal cuttings every 2–3 years to maintain vigour. Deadhead promptly to encourage a second flush and reduce seeding.
Prevent the governor lupine problems before they start
Most the governor lupine issues are care-mismatch, not bad luck. Dial in the basics:
Looking for the governor lupine in general rather than its problems? Read the full the governor lupine care guide — light, water, soil and feeding.
The Governor lupine problems — FAQ
Why is my the governor lupine lupin aphid (macrosiphum albifrons)?
Large grey-green aphids can colonise flower stems and young shoots in enormous numbers in late spring, causing distorted growth and sticky honeydew. Spray with insecticidal soap or neem oil; large infestations may require systemic treatment. Ladybirds and parasitic wasps provide natural control.
Why is my the governor lupine powdery mildew?
White powdery coating on leaves, typically appearing after flowering in warm, dry spells followed by humidity. Improve airflow by removing lower foliage, avoid overhead watering, and apply a potassium bicarbonate spray or fungicide as needed. Remove badly infected growth promptly.
Why is my the governor lupine short lifespan and decline?
Russell lupin hybrids are inherently short-lived (3–5 years) and often decline rapidly after their best season. Replant from fresh seed or basal cuttings every 2–3 years to maintain vigour. Deadhead promptly to encourage a second flush and reduce seeding.