Spinach - Illinois Vegetable Garden Guide - University of Illinois Extension



Spinach should be grown in the early spring or late fall because the long, hot days of summer cause it to bolt to seed, making it unusable. Select recommended varieties for each of these plantings. New Zealand spinach, which is not a true spinach, can be grown during the summer.

The plants may be harvested any time the leaves are large enough to use. Some plants may be thinned out for early use and the rest left to attain full size.

Crop Amount for 100
ft of row
Variety recommended for use in Illinois Days to harvest Resistant to
Spinach (seed) 1 ounce Bloomsdale Long-Standing 45
Winter Bloomsdale 45
America 45
New Zealand 65
Vegetable Hardiness Recommended planting period for central Illinois (b) Time to grow from seed to field (c)
For  overall
Spinach Hardy Mar. 25-Apr. 15
Aug. 15-30
Vegetable Spacing in row
Seed to sow per foot Distance between plants when thinned or transplanted Distance between rows Planting depth
inches inches inches
Spinach 12-15 2-4 12-18 ½