🌰 Persian Walnut
Nut Trees · growing reference
| To first harvest | ~5 years |
|---|---|
| Spacing | 360″ in the row × 420″ between rows |
| Planted as | tree |
| Water | ~1–1.5 in a week |
When to plant
In USDA zone 6, for example: Plant around Mar 4, while the stock is still dormant — bare-root wants to be in the ground before it leafs out.
| Spring | |
|---|---|
| Zone 3 | Apr 3 |
| Zone 4 | Mar 26 |
| Zone 5 | Mar 15 |
| Zone 6 | Mar 4 |
| Zone 7 | Feb 18 |
| Zone 8 | Feb 1 |
| Zone 9 | Jan 9 |
Dates are the typical window for each zone's average frost dates — your own last frost can differ by a couple of weeks. Zone 10 and warmer is effectively frost-free: plant to the season, not the frost. Southern Hemisphere: shift six months.
Walnut Types
- Carpathian · ~5 years · 30–75 lbs/plant — The cold-hardy Polish strain — zone 5, and the only English walnut worth trying in the northeast or midwest.
- California · ~5 years · 50–150 lbs/plant — Chandler, Hartley — the commercial cultivars: zone 7–9, big thin-shelled nuts, needs a long dry summer.
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