Cape Sundew
Drosera Capensis
Drosera capensis, commonly known as the Cape Sundew, is a fascinating carnivorous plant native to South Africa. Its unique dew-covered leaves attract and digest insects, making it a captivating addition to any plant collection.
Everything it needs
9 essentials at a glance
Watering
Drosera capensis prefers consistently moist soil.
Water with distilled or rainwater to avoid mineral buildup. During the growing season (spring and summer), water every 2-3 days, allowing the top inch of soil to dry slightly between waterings. In fall and winter, reduce watering to once a week. Signs of over-watering include yellowing leaves and root rot, while under-watering may cause the leaves to wilt and lose their dew droplets.
Light
This plant thrives in bright, indirect sunlight but can tolerate full sun for several hours a day.
Ideal placement is near a south or west-facing window, receiving 10-12 hours of light daily. Too little light can lead to leggy growth, while excessive direct sunlight can scorch the leaves.
Soil
Drosera capensis requires a nutrient-poor, well-draining soil mix.
A combination of sphagnum moss and perlite or sand works well, with a pH range of 4.5 to 6.0. Ensure the pot has drainage holes to prevent waterlogging, which can harm the roots.
Humidity
This plant prefers high humidity levels, ideally between 50-80%.
To increase humidity, use a humidity tray filled with water and pebbles, or mist the plant regularly. Signs of low humidity stress include browning leaf tips and reduced dew production.
Temperature
Drosera capensis thrives in temperatures between 70-85°F (21-29°C) during the day and slightly cooler at night.
It is hardy in USDA zones 10-11. While it can tolerate brief periods of cooler temperatures, prolonged exposure below 50°F (10°C) can be detrimental.
Fertilizing
Use a diluted, low-nitrogen fertilizer (NPK ratio of 1-1-1) every 4-6 weeks during the growing season.
Avoid fertilizing in fall and winter when the plant is dormant. Signs of nutrient deficiency include stunted growth and pale leaves.
Pruning
Prune Drosera capensis in late winter or early spring to remove any dead or damaged leaves.
Use clean, sharp scissors to cut leaves at the base. Regularly deadhead spent flower stalks to encourage new growth and maintain plant health.
Repotting
Repot every 1-2 years or when the plant outgrows its pot.
Signs it needs repotting include roots growing out of the drainage holes or stunted growth. Choose a pot 1-2 inches larger in diameter, and gently remove the plant from its old pot, replacing the old soil with fresh, nutrient-poor mix.
Propagation
Propagation can be achieved through seed or leaf cuttings.
For seeds, sow them on the surface of moist soil in spring and keep them warm and humid until germination occurs in 2-4 weeks. For leaf cuttings, take a healthy leaf in spring, place it on moist soil, and cover it with a plastic bag to maintain humidity until new growth appears.
When it's unhappy
Yellow leaves
Why it happens
This can be caused by over-watering or low light conditions.
How to fix it
Adjust watering frequency and ensure the plant receives adequate light.
Brown leaf tips
Why it happens
Brown tips often indicate low humidity levels.
How to fix it
Increase humidity through misting or using a humidity tray.
Wilting leaves
Why it happens
Under-watering or root rot can lead to wilting.
How to fix it
Check soil moisture and adjust watering habits accordingly.
Lack of dew production
Why it happens
Insufficient light or low humidity can affect dew production.
How to fix it
Ensure the plant receives enough light and maintain high humidity levels.
Stunted growth
Why it happens
Nutrient deficiency or poor soil quality can hinder growth.
How to fix it
Fertilize with a low-nitrogen fertilizer and repot in fresh soil.
Care through the year
Spring
In spring, increase watering frequency as the plant begins to actively grow. Ensure it receives plenty of bright, indirect sunlight to promote healthy growth.
Summer
During summer, maintain consistent moisture and provide 10-12 hours of light daily. Monitor humidity levels and mist regularly to prevent stress.
Fall
In fall, gradually reduce watering as the plant enters dormancy. Cut back on fertilizing and prepare for cooler temperatures.
Winter
In winter, water less frequently, about once a week. Keep the plant in a cooler area, but avoid temperatures below 50°F (10°C) to prevent damage.
Toxicity & Safety
Drosera capensis is non-toxic to pets and children. It is safe to grow around cats and dogs, and ingestion of the plant does not cause any known symptoms.
Good to know
How often should I water my Drosera capensis?
Water your Drosera capensis every 2-3 days during the growing season, allowing the top inch of soil to dry slightly. In fall and winter, reduce watering to once a week.
Why are my Cape Sundew's leaves turning yellow?
Yellow leaves can indicate over-watering or insufficient light. Adjust your watering schedule and ensure the plant receives bright, indirect sunlight.
What type of soil is best for Drosera capensis?
Drosera capensis prefers a nutrient-poor, well-draining mix, such as sphagnum moss combined with perlite or sand, with a pH of 4.5 to 6.0.
How can I increase humidity for my Sundew?
To increase humidity, use a humidity tray filled with water and pebbles or mist the plant regularly. Keeping it in a terrarium can also help maintain humidity levels.
When is the best time to repot Drosera capensis?
Repot your Drosera capensis every 1-2 years or when it outgrows its pot, ideally in late winter or early spring.
Can I propagate Drosera capensis from cuttings?
Yes, you can propagate Drosera capensis from leaf cuttings. Place a healthy leaf on moist soil and cover it to maintain humidity until new growth appears.
Is Drosera capensis safe for pets?
Yes, Drosera capensis is non-toxic to both pets and children, making it a safe choice for households with animals.
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