Troubleshooting
Tristar Strawberry problems — and how to fix them
Tristar Strawberry (Fragaria × ananassa 'Tristar') 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.
Botrytis fruit rot
Grey mould (Botrytis cinerea) on ripe and over-ripe berries is the most common problem in wet seasons. Harvest regularly, remove fallen fruit, and avoid wetting foliage.
Red stele root rot (Phytophthora fragariae)
Causes sudden wilting and reddened inner roots in cold, waterlogged soil. Plant in raised, well-drained beds; avoid replanting on infected soil for at least 5 years.
Spider mites in dry conditions
Fine stippling on leaves and webbing indicate spider mites during hot, dry spells. Keep plants adequately watered; spray with water or apply an organic miticide. Tristar has good general pest resistance.
Prevent tristar strawberry problems before they start
Most tristar strawberry issues are care-mismatch, not bad luck. Dial in the basics:
Tristar Strawberry problems — FAQ
Why is my tristar strawberry botrytis fruit rot?
Grey mould (Botrytis cinerea) on ripe and over-ripe berries is the most common problem in wet seasons. Harvest regularly, remove fallen fruit, and avoid wetting foliage.
Why is my tristar strawberry red stele root rot (phytophthora fragariae)?
Causes sudden wilting and reddened inner roots in cold, waterlogged soil. Plant in raised, well-drained beds; avoid replanting on infected soil for at least 5 years.
Why is my tristar strawberry spider mites in dry conditions?
Fine stippling on leaves and webbing indicate spider mites during hot, dry spells. Keep plants adequately watered; spray with water or apply an organic miticide. Tristar has good general pest resistance.