Drosera anglica aka English Sundew

Drosera anglica is rated as a challenging carnivorous plant to cultivate successfully. It requires mineral-free water (rainwater or distilled), full sun, a nutrient-free peat-and-sand soil mix, and — crucially — a cold winter dormancy of roughly six months. Replicating these conditions outside the plant's native bog environment, particularly the dormancy period, is the main challenge for growers.

Drosera anglica has a circumboreal native distribution spanning northern Europe, northern Asia, and North America (12 US states including Alaska, and 11 Canadian provinces and territories). Isolated populations also occur in Japan, southern Europe, California (rare, 2B.3-ranked), and Hawaii's Kauai island. In New England it is restricted to northern Maine, where it is state-listed as Endangered.

Drosera anglica must be kept permanently wet during the growing season. The standard method is the tray technique: pots sit in a shallow tray of standing mineral-free water (rainwater or distilled) at all times. During hot weather, deeper flooding of pots is recommended. In winter dormancy, plants should be kept cool and just damp — not bone dry and not waterlogged.

This species is adapted to cold northern climates and requires approximately six months of winter dormancy. In cultivation, plants should ideally be grown outdoors in a climate zone similar to their origin. During dormancy, keep cool and just damp. The Hawaiian form of D. anglica is an exception and can be maintained as a terrarium plant without a cold rest period.

No specific humidity threshold data was found in sources reviewed. In its natural bog habitat, D. anglica grows in persistently wet open environments where ambient humidity is consistently high. In cultivation, the wet-tray method maintains adequate moisture at the root level; supplemental misting is not generally recommended as it can dilute the mucilage on the leaves.

Drosera anglica derives nutrients by digesting trapped insects rather than from soil. The soil medium must be nutrient-poor (peat and sand or sphagnum and sand) and should never be fertilized with standard plant fertilizer, which can kill the plant. If insects are not available in the growing environment, occasional feeding with small live or freeze-dried insects is acceptable.

During the growing season (spring through early autumn) keep pots in standing mineral-free water in full sun. As days shorten and temperatures drop in autumn, the plant collapses into a hibernaculum — a knot of tightly curled leaves at the growing point. Move dormant plants to a cool, frost-protected but cold location and keep the medium just damp. In early spring, repot if needed and return to full sun and the wet-tray method as growth resumes.

Drosera anglica produces white flowers in summer on slender scapes 6-18 cm tall. Each flower has five petals, five sepals, and five stamens with three styles. Flowers open individually in succession along the scape. The plant is self-pollinating, so flowers set seed reliably without insect pollinators.

The Hawaiian form of D. anglica (sometimes noted as a California-Hawaii hybrid) is the most significant horticultural variant: it lacks winter dormancy and can be grown as a terrarium plant year-round, unlike the standard cold-temperate populations that require six months of dormancy. D. anglica also forms naturally occurring sterile hybrids with other Drosera species.

D. anglica is best cultivated outdoors in a climate zone similar to its native northern bog habitat. Choose a full-sun, frost-exposed spot and use the tray method with rainwater or distilled water. Plants naturally handle cold winters and will enter dormancy on their own schedule. In mild climates where winters are too warm to trigger dormancy, the plant often declines; in those cases the Hawaiian form is a better choice as it tolerates warmer conditions.

No pruning is required or beneficial for D. anglica. Dead leaves and old traps can be gently removed with tweezers to maintain appearance, but this is optional. During the dormancy transition, the old rosette naturally collapses; do not cut back the hibernaculum.

Repot in early spring just as new growth begins to emerge from the hibernaculum. Use a fresh mix of 50:50 peat and sharp sand or chopped sphagnum and sand. Remove dead roots and clean old stem material from the hibernaculum base. Position the hibernaculum so its base sits at soil level. A thin top-dressing of sand helps deter fungus gnats. Smaller individuals may benefit from annual repotting; larger plants every two years.

Leaf mucilage traps dust and debris along with prey. Gentle misting with distilled or rainwater can rinse the leaves. Do not use tap water (mineral salts harm the plant) or wipe leaves with cloth, as this removes the sticky trapping mucilage and can damage the delicate tentacles.

The primary method is seed sowing after cold stratification: place seeds in wet, finely chopped sphagnum moss in a sealed plastic bag and refrigerate for 4 weeks before sowing. Seeds require bright light to germinate. Sterile hybrid forms (which produce no viable seed) are propagated by division or leaf cuttings taken in spring. Division can also be used for established clumps of the standard species.

Yellowing leaves in D. anglica most commonly indicate overlong dormancy, mineral-contaminated water (tap water), too little light, or the natural senescence of older outer leaves. Loss of red coloration (leaves becoming pale or yellow-green) specifically points to insufficient light. Ensure full sun and use only rainwater or distilled water.

Browning and drying of leaves is normal at the onset of winter dormancy as the plant forms its hibernaculum. Outside of dormancy, brown crispy leaves indicate desiccation — the tray has run dry or the plant dried out. Brown, mushy leaves suggest rot from stagnant water in a warm environment; improve airflow and ensure water is kept fresh.

The tentacle-bearing leaves of D. anglica naturally curve or roll inward in response to trapped prey — this is normal and healthy. If the entire rosette droops without prey contact, the plant may be desiccated or suffering from root rot. Check that the tray holds fresh water and that the growing medium is not compacted or water-repellent.

D. anglica does not drop leaves in the traditional sense. In autumn, the whole above-ground rosette compresses into a hibernaculum as part of dormancy. If leaves die off during the growing season, check for root damage, contaminated water, or insufficient light.

D. anglica is a naturally slow-growing species. Growth rate is inherently slow regardless of care. The most common cultivation causes of slower-than-expected growth are: insufficient light, water temperature too cold during the growing season, root disturbance, or a dormancy period that was too long or too warm. Adequate sunlight and the warm-season tray method maximize growth pace within the species' natural limits.

The main pests are fungus gnats (larvae feed on roots) and crane flies. A top-dressing of sharp sand over the peat medium deters egg-laying. Increased sunlight reduces moss overgrowth that can shelter pests. Root rot is the primary disease concern, typically caused by stagnant water or warm temperatures during dormancy.

D. anglica is self-pollinating and sets seed reliably without insect visitors. In cultivation, seed is produced automatically. The flower stalks hold blooms away from the trapping leaves, reducing the risk of the plant accidentally trapping its own pollinators. If cross-pollination with another Drosera species occurs, sterile hybrids may result.

D. anglica is not a food plant. The closely related D. rotundifolia has a historical record of its leaf juice being used to curdle plant milks, earning an edibility rating of 1/5. No significant edible use is documented for D. anglica specifically. Plants should not be harvested from the wild given their rarity in many regions.

Plants in the Drosera genus (particularly D. rotundifolia) have a traditional medicinal history for respiratory conditions — whooping cough, bronchitis, and asthma — and topical use for warts, corns, and bunions. The medicinal rating for the genus is 3/5. Specific clinical evidence for D. anglica is not documented in reviewed sources; the genus-level traditional use is noted here for context. Wild collection is discouraged due to conservation concerns.

No significant other uses (industrial, material, fiber, dye, etc.) are documented for D. anglica or the Drosera genus more broadly. Other uses rating is 1/5 for the genus.

New growth will sprout from the top of the English Sundew as it grows vertically.

English Sundew loves a well-draining soil. Perlite and vermiculite help with drainage, while coco coir adds organic matter, so a good potting soil mix will have all three. You can improve store-bought soil by adding some perlite to it.

English Sundew requires abundant, bright, and direct light to thrive. The best placement for this plant is within one foot of a window to ensure it receives enough light. If you live in an area with more extreme weather, such as hot summers or cold winters, you may need to adjust the placement of the plant accordingly. During hot summer months, it is important to place the plant away from full sun, as this can cause the leaves to yellow or burn. During cold winter months, it is best to move the plant closer to the window to take advantage of the extra light that can help it survive. By keeping an eye on the current weather in your area, you can make sure your Great Sundew is always in the right place to thrive.

There is no verified data on the toxicity of this plant in the records of Ploi. If any person, including yourself, a family member, or a pet, consume plant material with an uncertain toxicity level, it is advisable to seek the advice of a healthcare expert.