Cape Sundew (Drosera capensis) - Seeds

The Cape sundew belongs to the sundew family (Droseraceae) and is a true classic among carnivorous plants. It is particularly popular with beginners because it is robust and fast-growing.

Origin and natural habitat

As the name suggests, the Cape sundew originally comes from the Cape region in South Africa. There, it grows in damp, swampy, and nutrient-poor areas, often on riverbanks or in moors. The climate there is subtropical, which means the plant is accustomed to plenty of sun and mild temperatures.

Appearance and growth habit

• Leaves: The plant forms a basal rosette of ribbon-shaped leaves up to 15 cm long.

• Tentacles & adhesive traps: The upper sides of the leaves are densely covered with reddish glandular hairs (tentacles). At their tips sit tiny, glittering drops of sticky secretion. This "morning dew" (hence the name) gives off a sweet scent that attracts insects.

• Flowers: In summer, the plant produces a leafless flower stalk up to 30 cm long (so that pollinators do not accidentally land in the traps). Several small, usually bright pink or purple flowers grow on it, which often open for only a single day.

• Growth: Over time, the Cape sundew can form a small stem, as the lower leaves die off and the plant continues to grow upwards.

Location and care (cultivation)

• Light: Drosera capensis is extremely light-hungry. A south-facing window with full sun is ideal. The more sun the plant gets, the more intensely red its sticky tentacles will turn. In summer, it enjoys being outside in full sun.

• Water: Tap water is pure poison! The plant must be watered exclusively with rainwater, distilled water, or reverse osmosis water. It is best kept using the tray method: the pot sits permanently in a saucer filled with about 1–2 cm of water.

• Substrate: Normal potting soil is fatal. You need special, nutrient-poor carnivorous plant substrate (usually a mixture of unfertilized peat moss and quartz sand). Special substrate available here.

• Overwintering: The plant can be kept in a warm spot on the windowsill all year round. However, it also tolerates a cool wintering period at 5–10 °C (in which case, water slightly less).

🌱 Sowing instructions and propagation

Propagating Drosera capensis is incredibly easy—often so easy that it propagates itself.

1. Seeds: The plant is self-pollinating and produces thousands of tiny, dust-like seeds after flowering.

2. Light-dependent germinator: The seeds must not be covered with soil! Simply sprinkle them onto well-moistened carnivorous plant substrate.

3. Conditions: Keep the substrate very wet and ensure high humidity (e.g., stretch cling film with small holes over the pot or place it in an indoor greenhouse).

4. Germination time: In a bright and warm location, the seeds often germinate after just 2 to 4 weeks.

5. Alternatives: Besides sowing, the plant can also be easily propagated via leaf cuttings or root cuttings.

💡 Interesting facts and curiosities

• The "hug of death" (thigmotropism): If an insect gets stuck to the sticky drops and struggles, the plant registers the mechanical stimulus. Within a few minutes to hours, the entire leaf actively rolls up around the prey to bring as many digestive glands as possible into contact with the insect.

• Digestion: The plant secretes enzymes that decompose the insect. The dissolved nutrients (especially nitrogen and phosphorus, which are missing from the soil) are absorbed through the leaf. Afterwards, the leaf unrolls again and the empty chitin shell of the insect blows away in the wind.

• The "weed" of the carnivore scene: Because the Cape sundew is so robust and self-seeds almost explosively via its countless seeds, it often appears spontaneously in other pots. Among collectors, it is therefore affectionately and jokingly referred to as a "carnivorous weed."

• Feeding unnecessary: You do not need to feed the plant indoors. The few fungus gnats or fruit flies that it catches itself are perfectly sufficient as fertilizer. Meat or cheese would only cause the leaves to mold.