How to Grow Lance-leaf Sundew

Lance-leaf Sundew

Drosera adelae

flower

Drosera adelae is a carnivorous plant native to Queensland, Australia, featuring narrow, lance-shaped leaves covered in glistening tentacles that trap and digest insects. It produces delicate pink or white flowers on tall stalks and thrives in boggy, nutrient-poor conditions. This dramatic houseplant combines ornamental appeal with fascinating predatory behavior.

Growing Conditions

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Sun: Bright, indirect light; 4-6 hours of filtered sunlight daily or grow lights for 12-14 hours

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Water: Keep constantly moist but not waterlogged; use distilled or rainwater only. High humidity (60-80%) essential. Water from below by placing pot in a tray of water.

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Spacing: 4 inches

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Days to maturity: 120-180 days from establishment to flowering

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Planting depth: Surface sowing; seeds should not be covered

Soil

Type: Nutrient-poor, acidic, moisture-retentive medium such as peat moss and sand mixture

pH: 4.0-5.5

Amendments:

Sphagnum peat moss coarse sand perlite

Growing Zones

Find your zone →

Zones 10b-11; best grown indoors in cooler climates

10b 11a 11b

Growth Stages

Germination & Seedling

3-4 weeks

Tiny seedlings with first pair of small, sticky leaves emerging. Requires very high humidity and consistent moisture.

Keep under high humidity (80%+) in bright, indirect light. Avoid disturbing seedlings. Use distilled water only. May take 3-4 weeks to establish.

Young Rosette Formation

4-8 weeks

Plant develops characteristic lance-shaped leaves arranged in a rosette pattern, each leaf covered with reddish glandular tentacles.

Maintain high humidity and consistently moist substrate. Begin feeding with distilled water and occasional exposure to small insects or use fertilizer spray sparingly.

Mature Vegetative

8-12 weeks

Fully formed rosette with 8-15 elongated leaves, each 2-4 inches long, covered with active sticky traps that glisten in light.

Maintain established routine of moisture, humidity, and bright light. Allow plant to catch insects naturally or supplement with distilled water misting. Avoid touching tentacles.

Flowering

2-4 weeks

Tall, delicate flower stalks (inflorescences) emerge from the center of the rosette bearing small pink or white flowers.

Maintain consistent conditions during bloom. Allow flowers to be pollinated if desired for seed set. Flowering indicates plant maturity and vigor.

Dormancy & Reset

2-3 months (optional; some plants remain active year-round indoors)

After flowering, plant may slow growth. Some individuals enter dormancy requiring cooler temperatures (50-60°F) for 2-3 months.

Reduce watering slightly if dormant but keep substrate moist. Provide cooler conditions if possible. Resume normal care when new growth appears.

Companion Planting

Plan your garden →

Plant with:

Other Drosera species Pinguicula (Butterwort) Sarracenia (Pitcher plants) Nepenthes (Monkey cup plants) Sphagnum moss

Avoid planting near:

Fertilizer-rich plants Drought-tolerant plants Most conventional houseplants Plants requiring alkaline soil

Common Pests

Maintain good air circulation; avoid overwatering; use yellow sticky traps; ensure proper drainage despite high moisture needs
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Ensure adequate air circulation with a small fan; avoid misting foliage directly; maintain proper humidity without creating stagnant conditions
Use only distilled water; ensure peat-sand mix drains adequately; use terracotta pots; provide air circulation; repot if rot develops
Inspect regularly; remove by hand; use insecticidal soap if necessary (test on small section first)

Uses

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Decorative Houseplant & Specimen Display

Ornamental

The striking lance-shaped leaves with jewel-like tentacles make Drosera adelae a conversation-starting houseplant for terrariums or bright windowsills. Its delicate pink flowers add seasonal interest. [source]

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Natural Insect Control

Wildlife

In humid indoor environments, this plant actively traps and digests small insects like gnats, flies, and mosquitoes, providing biological pest control without chemicals. [source]

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Botanical Terrarium & Paludarium Feature

Craft

Ideal centerpiece for specialized terrariums and paludariums designed to mimic tropical bog environments, adding biodiversity and visual interest to contained ecosystems. [source]

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Traditional Herbal Interest

Medicinal

Sundews have a long history in European herbalism, traditionally used in respiratory remedies and cough syrups, though modern scientific evidence is limited. [source]

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Insectivorous Curiosity & Education

Culinary

While not for consumption, observing how the plant captures and processes insects provides fascinating lessons in plant biology and carnivorous plant ecology. [source]

This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.

Harvest Tips

Drosera adelae is not harvested in the traditional sense. Enjoy the plant for its ornamental foliage and flowers. To propagate: collect seeds after flowering and sow on moist peat-sand; alternatively, propagate via leaf cuttings placed on wet sphagnum moss in high humidity until plantlets form (4-8 weeks).

Fun Facts

🌱 The sticky tentacles (called 'tentacles' or 'glandular hairs') on Drosera adelae leaves produce a sweet, sticky mucilage that acts as both a trap and digestive enzyme, chemically breaking down insect prey for nutrient absorption.
🌱 Unlike most plants that absorb nitrogen from soil, sundews evolved carnivory to supplement nutrient uptake in nitrogen-poor bog habitats—each insect captured can provide weeks' worth of usable nitrogen.
🌱 The common name 'sundew' refers to the way morning dew or secreted mucilage sparkles in sunlight, making the leaf tentacles appear to glisten like jewels on the plant's surface.

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