Winter Care for Mixed Carnivorous Plants: Dormancy, Soil, and Disease

Managing a Mixed Collection in New Jersey

Separate Mexican butterwort and Cape sundew—they need different soil, water, and light. Cape sundew: 50/50 peat/perlite, tray water up to ¼ pot depth, no dormancy needed, keep indoors in south window with supplemental light in winter. Butterwort: 1:1:1 perlite, vermiculite, peat; keep soil just moist, no standing water, avoid direct sun. African violet pots work well for butterworts.

Temperate Plants (Flytraps, Pitchers, Doodle Bug)

Need 4–5 inch pots minimum (6–8 inch for pitchers). Overwinter outdoors if possible, but prevent pots from freezing solid—pack in mulch. If already indoors, keep in bright south window, soil moist, no standing water, watch for mold. Skip dormancy this year if not acclimated.

Disease and Mold

Black spots that rub off are mold; spots part of leaf are dead tissue. In strong light and open air, mold is rare. Use water-based fungicides with Neem oil, sulfur, or pyrethrins. Clean tools with bleach between plants.

Doodle Bug Seasonal Changes

Browning and discoloration in fall are normal prep for dormancy. Clip dead parts.

Follow-Up: Butterwort Soil, Cold Tolerance, and Yellow Mold

Butterwort bottom leaves brown naturally. Cape sundew likes direct sun with midday shade. Butterworts prefer morning sun or bright artificial light. Use African violet pots (double-walled) for butterworts. Keep both above 60°F in winter. If butterwort forms thick non-carnivorous leaves, reduce water and keep cool but above 60°F.

Venus flytrap root disturbance is tolerable. Yellow balls on soil are likely yellow mold/mushrooms—treat with Neem oil. Slime mold looks like wet jelly. Buy from specialists (cobraplant.com, californiacarnivores.com) for healthy plants and correct soil.

Good growing!