Nut · Betulaceae
When to plant hazelnuts
The most garden-sized nut, grown as a multi-stemmed bush rather than a tree, and the quickest of them to bear. Two different varieties are needed for pollination.
First worthwhile crop
Year 4
After planting, not after sowing.
Hardy in USDA zones
4a to 8a
Winter cold sets the limit here, not the calendar.
Frost tolerance
Very hardy
How much cold the plant itself will take.
Those weeks become real dates once you name a place.
Timing, in frost-relative terms
Nothing about a standing crop is sown to a calendar. Once planted, hazelnuts stay in the ground for years, so the question is not when to sow but whether your winter is survivable and your planting window is open. Both answers come from your frost dates.
- Expect a first worthwhile crop in year 4 after planting.
- Needs roughly 800 chill hours below 7.2°C (45°F)45°F (7.2°C) over winter to set fruit, which rules out the warmest climates.
- Hardy in USDA zones 4a–8a.
Getting the timing right
Plant dormant. Hazel flowers in the depths of winter, releasing pollen from catkins on bare wood, so the crop is decided months before anything else in the garden has woken up.
Frost tolerance
The bush is fully hardy, but midwinter flowering means a hard freeze during pollen release can reduce the crop even though nothing visible is damaged.
Classified as very-hardy.