Botanical Name: Physalis pruinosa
Days to Maturity: 75 days from transplanting
Native: Mexico and Central America
Hardiness: Frost-sensitive annual
Plant Dimensions: 12"–18" tall; sprawling if not staked
Variety Information: ½" yellow fruit inside a thin, papery shell
When to Sow Outside: 2 to 4 weeks after your average last frost date, and when soil temperature is at least 60°F.
When to Start Inside: RECOMMENDED. 4 to 6 weeks before your average last frost date. Ideal soil temperature for germination is 80°–85°F.
Days to Emerge: 10 days
Seed Depth: ¼"
Seed Spacing: A group of 3 seeds every 18"
Row Spacing: 36"
Thinning: When 2" tall, thin to 1 every 18"
Harvesting: Fruit is at its sweetest when it falls to the ground (hence the name, ground cherry) and has turned from light yellow to golden yellow. If the color of the fallen fruit is still light yellow, bring them indoors to ripen in their husks at room temperature.