While many of us associate spinach with early-summer salads, this cool-season crop thrives at either end of the growing season and, like leaf lettuce, the outer leaves can be cropped long before the plant’s maturity date has been reached, extending the harvest significantly.
In late summer, once average daytime highs drop to about 21°C, gardeners can begin to make their first sowings for autumn harvest at 10 day intervals; your last seed should be in the ground 40 days before your area’s first hard, killing frost. The outer leaves of spinach should be culled regularly, and the whole plant should be harvested when flower buds begin to form at its centre.
Quick tip: Spinach grows best when average temperatures are about 5°C and daylengths are between 10 and 12 hours.
Spinaches for late-summer sowing (40 to 48 days)
- 'Bloomsdale Longstanding'
- 'UniPack 151'