Best Sundews and Butterworts for Indoor Fungus Gnat Control

Grower in KC, MO (zone 6) wants winter-growing, easy, inexpensive sundews/butterworts under lights to eat fungus gnats (BTI and wasps failed). Shelf: 3×3 ft, two 4-ft 2-tube T8 shop lights + two 26W CFLs.

Top Picks

• Sundews: D. capensis, D. adelae, D. multifida, D. spatulata, D. filiformis (tropical red form), D. spiralis (ex D. graminifolia).
• Butterworts: P. moranensis (top choice), P. × aphrodite, P. moctezumae (keep drier).

Why Not True Winter-Growers?

Australian tuberous & South African species (e.g., D. cistiflora) are challenging, expensive, hard to find. Tropical/subtropical species thrive under lights year-round.