How to Grow Lampion
Lampion
Physalis alkekengi var. franchetii
fruitLampion is a decorative variety of ground cherry (Chinese lantern) grown primarily for its striking papery, lantern-like calyces that enclose small orange fruits. The plant produces delicate white flowers followed by these unique inflated seed pods that are prized for ornamental arrangements and dried decorations. Though technically edible, Lampions are typically grown as ornamentals rather than for culinary use.
When should you plant Lampion in your zone?
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Example Lampion timeline · Pittsburgh, PA (Zone 6b)
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Plant Lampion
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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Harvest Lampion
Around Jun 26≈ 70 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Lampion dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Zones 3-9; thrives in temperate climates with moderate summers
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Seedling
2-3 weeksTiny seedlings with two cotyledons and fine, delicate foliage emerging
Keep soil moist but not soggy. Provide bright light indoors. Thin seedlings to strongest specimens. Start seeds 6-8 weeks before last frost.
Vegetative Growth
3-4 weeksBushy plant develops multiple stems and ovate leaves; no flowers yet
Harden off transplants gradually before moving outdoors. Plant after last frost. Support with light staking if needed. Pinch tips to encourage bushiness.
Flowering
3-4 weeksDelicate white or pale yellow flowers appear in leaf axils; flowers are relatively inconspicuous
Ensure consistent moisture and sunlight. Flowers typically appear 5-6 weeks after transplanting. Do not over-fertilize or you'll get excessive foliage.
Fruit Development
4-5 weeksCalyces begin to enlarge dramatically into distinctive papery, veined lanterns; small green fruit develops inside
Reduce nitrogen fertilizer. Maintain moderate watering. The lanterns become more prominent as they mature. Allow good air circulation to prevent mildew.
Mature Lanterns
3-4 weeks (can extend until first frost)Lanterns turn from green to cream/tan color with intricate reticulated veining; fruit inside turns orange; outer husk becomes papery and semi-transparent
Stop watering if possible to speed drying and maturation. Lanterns are ready to harvest when fully colored and papery. This stage lasts until frost.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Row covers until flowering; neem oil spray; diatomaceous earth; reflective mulch
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Increase humidity; strong water spray; neem oil; insecticidal soap
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Yellow sticky traps; neem oil; insecticidal soap; reflective mulch
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Strong water spray; ladybugs; neem oil; insecticidal soap
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and
Copper tape barriers; hand-picking; beer traps; diatomaceous earth
Uses
Dried Flower Arrangements
OrnamentalThe striking papery lanterns are highly prized in floral design, dried arrangements, and decorative wreaths. They add unique texture and visual interest to both fresh and dried botanical displays. [source]
Autumn & Holiday Decoration
HouseholdLampion lanterns make charming seasonal decorations for fall and winter displays, dried wreaths, and table centerpieces. Their delicate, translucent husks are particularly striking when backlit. [source]
Edible Ornamental Fruit
CulinaryWhile primarily ornamental, the small orange fruits inside are technically edible with a slightly tart, fruity flavor. Some gardeners use them as unique garnishes for desserts and cocktails. [source]
Botanical Art & Crafts
CraftThe intricate veining and lantern structure make Lampion perfect for pressed flower art, nature crafts, and decorative collage work. The dried specimens maintain their structure and color for extended periods. [source]
Pollinator Garden Attraction
WildlifeLampion flowers attract bees, hoverflies, and other beneficial pollinators, making it a valuable addition to pollinator gardens and beneficial insect habitats. [source]
Harvest Tips
Harvest lanterns when they turn papery tan/cream colored and feel lightweight, typically in late summer to early fall. Gently squeeze lanterns—they should be slightly flexible but papery. For dried decorations, harvest just before the first frost. Remove the outer husk to reveal the orange fruit inside if desired, or leave intact for arrangements. Lanterns dry beautifully and can be stored in a cool, dry place for 6+ months.
Fun Facts
- 🌱 The name 'Chinese lantern' comes from the paper-thin, vein-textured calyces that resemble traditional Asian lanterns when dried and backlit.
- 🌱 Lampion lanterns are so durable that florists and craft artists can store and use them for months or even years after drying, making them cost-effective decorative material.
- 🌱 The intricate reticulated (net-like) veining on the lantern develops as the fruit grows, creating a unique pattern on each one—much like nature's fingerprinting.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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