Chinese Lantern Plant: Growing & Care for Physalis alkekengi

Chinese lantern (Physalis alkekengi), also known as Japanese lantern, winter cherry, or bladder cherry, is grown for its brilliant orange, papery calyces that encase the fruit like tiny lanterns. A member of the nightshade family (Solanaceae), it spreads aggressively via underground rhizomes, so containment is key.

Planting

• Site: Full sun to partial shade; well-drained, rich, moist soil.
• Timing: Sow seeds outdoors after the last frost in late spring, or start indoors 4–6 weeks earlier.
• Spacing: 2–3 feet apart to allow for spread.
• Containment: To prevent invasiveness, plant in buried pots or containers.

Care

• Water: Keep soil evenly moist during dry periods; avoid waterlogging.
• Mulch: Apply 2–3 inches of organic mulch to conserve moisture and suppress weeds.
• Fertilizer: Feed once per season with a balanced fertilizer.
• Pruning: Remove diseased stems as needed. In late autumn, cut plants back to a few inches above ground.

Life Cycle & Uses

White, five-petaled flowers appear in midsummer. The inflated calyx turns bright orange, then fades to a lacy network as the berry inside matures. Ripe berries are edible in moderation; unripe fruit and leaves are toxic. Historically used in herbal medicine for fever, malaria, and inflammation, but caution is advised due to potential side effects.

Propagation

Divide rhizomes every 5–6 years in spring to rejuvenate and control spread.