How to Care for Sundew
How to Care for Sundew: The Complete Guide
Sundews (Drosera) are glistening carnivorous wonders. Their leaves are covered in tentacles tipped with sparkling, sticky "dew" drops that trap insects. When a bug gets stuck, the leaf slowly curls around it, digesting the insect for nutrients. Fascinating to watch and easier to grow than most people think.
Sundew at a Glance
| Botanical Name | Drosera spp. |
| Common Names | Sundew |
| Plant Type | Carnivorous perennial |
| Mature Size | 1–8 inches (varies by species) |
| Light | Bright light to full sun |
| Water | Keep constantly moist with distilled water (tray method) |
| Humidity | 50–80% |
| Temperature | 60–85°F for tropical species |
| Soil | Nutrient-free (sphagnum peat + perlite) |
| Toxicity | Non-toxic |
| Difficulty | Moderate |
Light Requirements
Sundews need bright light — ideally 6+ hours of direct or very bright indirect light daily. In sufficient light, the tentacles develop vibrant red coloring and produce abundant dew drops. In low light, they stay green and produce little "dew."
Watering
Critical rules — same as Venus Fly Traps:
- Only use distilled water, rainwater, or RO water
- Use the tray method: pot sits in a saucer with 1/2 inch of water
- Never let the soil dry out
- Never use tap water
Soil
Nutrient-free: 1 part sphagnum peat + 1 part perlite. Never use regular potting soil or fertilizer.
Feeding
Sundews catch their own food if placed where insects can reach them. If growing indoors with no bugs, feed small insects (fruit flies, ants) every 2–4 weeks. The sticky dew does the catching — just place a tiny insect on a dewy leaf.
Common Problems
No Dew Production
Not enough light or humidity. Move to a brighter spot and increase humidity.
Brown, Dying Leaves
Check water quality (must be mineral-free) and ensure consistent moisture. Old leaves die back naturally — only worry if the entire plant declines.
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Frequently Asked Questions
Are Sundews easy to grow?
Easier than most people expect! The key is using distilled water, keeping soil constantly moist, and providing bright light. Drosera spatulata and D. capensis are the easiest species for beginners.
Do Sundews need to eat bugs?
Not strictly — they photosynthesize like all plants. But catching insects provides supplemental nutrition that boosts growth and vigor.
How long do Sundews live?
With proper care, many Sundew species live indefinitely, continuously producing new leaves. Tropical species like Drosera spatulata don't require dormancy.
Can I grow Sundews with Venus Fly Traps?
Yes! They share nearly identical growing conditions (bright light, distilled water, nutrient-free soil). They make excellent companions in a carnivorous plant collection.
Nature's glistening predator. Shop Sundew at Divine Roots.