Troubleshooting
Lupin 'The Governor' problems — and how to fix them
Lupin 'The Governor' (Lupinus polyphyllus) 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 cluster on flower spikes and new growth; treat promptly with insecticidal soap or a systemic insecticide as infestations can be severe.
Powdery mildew
Especially prevalent in warm, dry summers; remove affected foliage and ensure good air circulation.
Crown and root rot
Caused by wet, poorly draining soils; improve drainage or raise beds and avoid overwatering.
Short lifespan
Russell hybrids are often short-lived (3-5 years); take basal cuttings in spring or raise from seed annually to replace ageing plants.
Slug damage
Young shoots and seedlings are very vulnerable; protect in spring with organic slug pellets or nematodes.
Prevent lupin 'the governor' problems before they start
Most lupin 'the governor' issues are care-mismatch, not bad luck. Dial in the basics:
Lupin 'The Governor' problems — FAQ
Why is my lupin 'the governor' lupin aphid (macrosiphum albifrons)?
Large grey-green aphids cluster on flower spikes and new growth; treat promptly with insecticidal soap or a systemic insecticide as infestations can be severe.
Why is my lupin 'the governor' powdery mildew?
Especially prevalent in warm, dry summers; remove affected foliage and ensure good air circulation.
Why is my lupin 'the governor' crown and root rot?
Caused by wet, poorly draining soils; improve drainage or raise beds and avoid overwatering.
Why is my lupin 'the governor' short lifespan?
Russell hybrids are often short-lived (3-5 years); take basal cuttings in spring or raise from seed annually to replace ageing plants.
Why is my lupin 'the governor' slug damage?
Young shoots and seedlings are very vulnerable; protect in spring with organic slug pellets or nematodes.