How to Grow Round-leaved Sundew
Round-leaved Sundew
Drosera rotundifolia
flowerA carnivorous plant native to boggy habitats across the Northern Hemisphere, characterized by rosettes of small, round leaves covered in reddish, glandular tentacles that trap and digest insects. The plant produces delicate pink or white flowers on thin stalks in summer. It thrives in nutrient-poor, acidic wetland conditions.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 2-7, with preference for cool, northern climates
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Growth Stages
Seed Germination
2-4 weeksTiny seeds (dust-like) remain on soil surface; small green leaves emerge after 2-4 weeks in cool conditions
Cold stratification (30+ days) improves germination. Keep soil constantly moist and cool (50-60°F). Use only distilled water.
Seedling & Establishment
2-6 monthsRosette of small, round leaves begins to form; red tentacles become visible as the plant matures
Maintain high humidity and constant moisture. Keep in bright, cool location. Avoid touching leaves. Do not fertilize.
Vegetative Growth
6-12 monthsRosette expands with numerous round leaves fully covered in sticky, reddish glandular tentacles; plant may reach 2-4 inches in diameter
Ensure standing water beneath pot. Provide bright light. Plant naturally traps insects—do not feed manually. Maintain cool temperatures.
Flowering
4-8 weeksThin, delicate flower stalks emerge from the center of the rosette; small pink, red, or white flowers bloom in succession
Flowering typically occurs in late spring to early summer. Allow plant to bloom naturally; seed production drains energy, so remove flowers if longevity is priority.
Dormancy (Winter)
3-4 monthsIn northern zones, the plant dies back to a underground bud (hibernaculum) or enters semi-dormancy with reduced leaf growth
Reduce watering slightly but keep soil moist. Maintain cool temperatures (40-50°F). Plant will re-emerge in spring. In warmer zones, may remain semi-active.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Ensure excellent air circulation; avoid overhead watering; use distilled water only; repot in fresh sterile peat moss if rot appears; reduce humidity slightly if persistent
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Increase humidity; mist with distilled water; isolate affected plants; remove severely infested leaves; carnivorous nature should provide some natural control
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Allow surface to dry slightly between waterings (if tolerable); use sand layer on top of soil to deter larvae; plant's insect-trapping nature provides natural control
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Increase air circulation; avoid misting foliage; reduce humidity if excessive; wipe gently with distilled water-soaked cotton swab
Uses
Natural insect control
HouseholdThe plant's sticky tentacles trap and digest small flying insects (gnats, mosquitoes, flies), providing natural pest control in indoor spaces. An individual plant can trap dozens of insects over a growing season. [source]
Traditional folk remedies
MedicinalHistorically used in European herbalism as a cough remedy and for respiratory ailments, though scientific evidence is limited. The plant contains enzymes and compounds studied for potential medicinal properties. [source]
Bog ecosystem indicator
WildlifeSundews are important members of bog ecosystems, serving as indicators of healthy wetland habitats. Growing them helps raise awareness about wetland conservation and supports understanding of specialized plant ecology. [source]
Botanical curiosity and education
CraftPopular among plant enthusiasts and educators for demonstrating carnivorous plant biology and plant adaptation to nutrient-poor environments. Makes an engaging educational specimen for classroom demonstrations. [source]
Culinary experiments and foraging
CulinaryNot typically used in modern cuisine, but historically added to traditional liqueurs and ales in Scandinavia. Modern foragers occasionally incorporate dried sundew in herbal infusions, though cultivated specimens are preferred over wild-harvested. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Not harvested for consumption. For seed collection: allow flowers to mature and dry on the plant; collect seed capsules when brown and papery in late summer; store seeds dry in cool, dark location. Do not harvest plants from wild populations; propagate from seeds or division of hibernacula.
Fun Facts
- 🌱 Round-leaved sundews are one of the fastest carnivorous plants: their tentacles can curve around prey in under 30 seconds, and the entire leaf can fold over prey within minutes to maximize digestion.
- 🌱 The plant's common name 'sundew' comes from the glistening appearance of its sticky tentacle secretions in sunlight, which resembles dewdrops and attracts insects that mistake them for water.
- 🌱 Drosera rotundifolia has a circumpolar distribution across the Northern Hemisphere and is found on multiple continents, making it one of the most widespread carnivorous plant species in the world.
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