Sow at a depth of approx.
0.47 inches (1.2 cm) and aim for a distance of at least
11.7 inches (30.0 cm) between Cucumber plants. Soil temperature should be kept higher than
16°C / 61°F to ensure good germination.
By our calculations, you should look at sowing Hedgehog about 14 days after your last frost date.
As Hedgehog is tender, ensure temperatures are mild enough to plant out - wait until after your last frost date to be on the safe side.