Sundews (Drosera) are a diverse group of sticky-leaved carnivorous plants. Their needs vary considerably: tropical, subtropical, temperate, and pygmy species do not all follow the same seasonal routine. Identify the species whenever possible before changing its care.

Light

Most commonly grown sundews appreciate bright light, and many develop stronger color and more dew in strong sun or under an effective grow light. Acclimate plants gradually to direct outdoor sun to avoid sudden scorch.

Water and humidity

Use rainwater, distilled water, or reverse-osmosis water. Many sundews prefer consistently moist to wet media, often using a shallow tray during active growth. Humidity needs differ by species; good airflow helps reduce mold and stagnant conditions.

Growing medium

Use a nutrient-poor carnivorous-plant medium appropriate to the species, often peat and perlite or long-fiber sphagnum. Avoid fertilizer and ordinary potting soil. Keep mineral-rich materials away from the root zone.

Seasonal differences

Some temperate sundews form winter hibernacula and need a cold dormant period. Tropical species may grow year-round in warm conditions, while other species have a dry or hot-season rest. Do not assume every sundew should be kept wet and warm all year.

Feeding and troubleshooting

Sundews catch small insects with their sticky leaves. Supplemental feeding is usually unnecessary when plants catch prey, and any feeding should be very small and infrequent. Loss of dew can result from low light, unsuitable water, stress after shipping or repotting, or a species being in seasonal dormancy.