Type
large nut, needs pollinizer
Walnut variety
Serr Walnut
Known for very large, attractive nuts and early harvest. It is better adapted to warmer walnut regions than frost-prone locations.
Season
late September
Best for
large nuts, warm climates
About Serr
Serr is a vigorous, early-bearing English walnut with large, attractive nuts and light kernels. Its early leafing can make it vulnerable to spring frost in marginal sites.
Growing Serr Walnut
Serr needs suitable cross-pollination and should be planted where late frosts are uncommon. Provide generous tree spacing and monitor for walnut blight and codling moth where those pests occur.
Full growing guide
For planting, care, pollination, and harvest that apply to all walnut, see the complete guide.
How to grow WalnutOther walnut varieties
Variety characteristics are general guidance for US home gardens; chill hours, hardiness, and pollination vary, so confirm suitability for your zone. Availability differs by supplier. Page updated Aug 4, 2026.