How to grow ground cherry

Physalis pruinosa · Solanaceae · Fruit

Ground Cherry is a warm-season fruiting crop in the Solanaceae family, usually started indoors and set out as transplants. It wants full sun (six or more hours of direct light) and steady, even moisture. From sowing to first pick is about 70–90 days. It is killed by frost, so nothing goes outside until the danger has passed and the soil has warmed.

Grower’s note: A low, sprawling cousin of the tomatillo with small, sweet, pineapple-flavoured fruit inside a husk. Ripe fruit drops to the ground - hence the name - and keeps for weeks in its husk. Self-seeds freely once grown.

Sowing

Sow about 0.25″ deep, into soil between 70–90°F — germination is quickest near 82°F. It is slow and often erratic to germinate (7–21 days). For an early crop, start seed indoors about 7 weeks before your last spring frost and grow it under bright light.

Spacing & layout

Give each plant about 30″ along the row with roughly 36″ between rows. On a square-foot grid that is one plant per 2 square feet. Allow at least 14″ of loose, workable soil for the roots. It grows well in containers at least 14″ deep.

Fitting it to your season

Ground Cherry needs roughly 70–90 frost-free days to crop. Where the season is shorter than that, start it indoors and choose the earliest-maturing varieties, or grow it in a container you can move under cover on cold nights. In long, hot-summer regions it can often be planted twice — once in spring and again in mid-to-late summer for a fall harvest.

Quick facts

When to plant ground cherry

Companions

Common problems

Pests: flea beetle, cutworm.

Diseases & disorders: early blight, mosaic virus.

Same family (Solanaceae)

Rotate these so they don’t follow each other in the same bed year to year.

Figures are typical home-garden ranges from Cooperative Extension planting guides, cross-checked against multiple state sources. Your variety and conditions will vary.