Troubleshooting
Glen Ample Raspberry problems — and how to fix them
Glen Ample Raspberry (Rubus idaeus 'Glen Ample') 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.
Root rot (Phytophthora) on wet soil
Wilting, dying canes on heavy ground signal root rot. Plant on raised ridges with sharp drainage and never in waterlogged sites.
Raspberry beetle / fruit grubs
Small white larvae in ripening berries. Encourage pollinators, harvest promptly, and use approved controls or netting where pressure is high.
Wrong pruning timing
As a summer fruiter it crops on last year's canes. Cut out only the fruited (brown) canes after harvest and tie in this year's green canes.
Grey mould (botrytis)
Wet, crowded rows rot the fruit. Thin canes for airflow and pick regularly in damp weather.
Prevent glen ample raspberry problems before they start
Most glen ample raspberry issues are care-mismatch, not bad luck. Dial in the basics:
- Common raspberries problems — the species this cultivar belongs to
- What's wrong with my plant? — the diagnosis apps compared
- Glen Ample Raspberry watering schedule
- Glen Ample Raspberry light requirements
- Best soil mix for glen ample raspberry
- Glen Ample Raspberry temperature & humidity
- Full glen ample raspberry care guide
Looking for glen ample raspberry in general rather than its problems? Read the full glen ample raspberry care guide — light, water, soil and feeding.
Glen Ample Raspberry problems — FAQ
Why is my glen ample raspberry root rot (phytophthora) on wet soil?
Wilting, dying canes on heavy ground signal root rot. Plant on raised ridges with sharp drainage and never in waterlogged sites.
Why is my glen ample raspberry raspberry beetle / fruit grubs?
Small white larvae in ripening berries. Encourage pollinators, harvest promptly, and use approved controls or netting where pressure is high.
Why is my glen ample raspberry wrong pruning timing?
As a summer fruiter it crops on last year's canes. Cut out only the fruited (brown) canes after harvest and tie in this year's green canes.
Why is my glen ample raspberry grey mould (botrytis)?
Wet, crowded rows rot the fruit. Thin canes for airflow and pick regularly in damp weather.