Plant Physalis seeds or seedlings in USDA hardiness zones 8 to 11 for long-term outdoor growing. Plant in midspring after the last frost to give the plants a warm, frost-free start. These plants fail in frost.
Choose sites for your Physalis plantings. Give the plants a bed with partial to full shade or filtered sun. These plants hail from woodlands and do best with cool, moist planting sites that mimic the forest floor. Allow at least 3 feet of growing space for each plant.
Turn 3 to 4 inches of garden loam or organic compost into the top 8 inches of soil in every planting site. Physalis grow in sand, loamy or clay-based soil with little nutrition, but they always need quick-draining soil. As woodland plants, they do best in organic, moisture-retaining soils.
Plant Physalis as seeds or seedlings in the flower bed and start them on 2 inches of water every week. Use organic mulch, such as dead leaves, grass clippings or bark, to maintain soil moisture through the season.