Troubleshooting
Hazelnut 'Eta' problems — and how to fix them
Hazelnut 'Eta' (Corylus avellana 'Eta') 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.
Cross-pollination required
Hazelnuts are self-incompatible and bloom-timing matters; pair 'Eta' with a compatible, overlapping cultivar so wind can carry pollen between them.
Nut theft by wildlife
Squirrels and jays take nuts early; harvest promptly as husks brown or net developing clusters.
Suckering bush
Produces numerous basal suckers; thin them each year to maintain a tidy, productive framework.
Big bud mite
Infested buds swell and fail to leaf out; pick off and destroy enlarged buds in late winter to limit the mite.
Prevent hazelnut 'eta' problems before they start
Most hazelnut 'eta' issues are care-mismatch, not bad luck. Dial in the basics:
Looking for hazelnut 'eta' in general rather than its problems? Read the full hazelnut 'eta' care guide — light, water, soil and feeding.
Hazelnut 'Eta' problems — FAQ
Why is my hazelnut 'eta' cross-pollination required?
Hazelnuts are self-incompatible and bloom-timing matters; pair 'Eta' with a compatible, overlapping cultivar so wind can carry pollen between them.
Why is my hazelnut 'eta' nut theft by wildlife?
Squirrels and jays take nuts early; harvest promptly as husks brown or net developing clusters.
Why is my hazelnut 'eta' suckering bush?
Produces numerous basal suckers; thin them each year to maintain a tidy, productive framework.
Why is my hazelnut 'eta' big bud mite?
Infested buds swell and fail to leaf out; pick off and destroy enlarged buds in late winter to limit the mite.