How to Grow Corkscrew Plants - Genlisea

Genlisea – Corkscrew Plants

Quick Care Summary

  • Light: Bright light to partial sun
  • Water: Distilled, rain, or RO only — keep very moist
  • Soil: Peat-based or sphagnum mix (very wet conditions)
  • Humidity: Moderate to high preferred
  • Temperature: 65–85°F for most species
  • Dormancy: Not required for most tropical species
  • Feeding: Not needed — traps microscopic prey underground
  • Difficulty: Moderate

Genlisea, known as corkscrew plants, are unusual carnivorous plants that trap microscopic prey underground using specialized corkscrew-shaped leaves. Above the surface, they form small rosettes and produce delicate, often orchid-like flowers.

Closely related to Utricularia, they thrive in very wet, low-nutrient environments and can grow quickly once established.

Growing Conditions – Keep It Wet and Bright

Genlisea are typically tropical and prefer consistently wet conditions with strong light.

Light

  • Bright light to partial sun
  • 4–8+ hours of strong light daily
  • Grow lights work very well indoors

Signs:
Weak growth → not enough light
Compact growth with frequent flowering → ideal conditions

Temperature

  • Most species: 65–85°F (18–29°C)
  • Tolerates moderate warmth

Most commonly grown species do not require dormancy.

Humidity

  • Preferred: 50–80%
  • Adaptable if kept consistently wet

Good airflow helps prevent mold in dense growth.

Beginner Varieties

  • Genlisea violacea – one of the easiest and most common
  • Genlisea hispidula – vigorous and adaptable
  • Genlisea subglabra – compact and fast-growing

Most species grow similarly—choose based on availability and preference.

Soil – Wet and Loose

  • 1:1 peat moss + perlite
  • Or long-fiber sphagnum

These plants prefer very wet conditions with loose, airy media.

Avoid: dense, compacted soil or any fertilizer in the mix

Watering – Very Wet Conditions

  • Use only distilled, rain, or RO water
  • Keep soil consistently wet to saturated
  • Tray method works very well

These plants tolerate wetter conditions than many other carnivorous species.

Do not allow to dry out.

Feeding – Not Necessary

Genlisea trap microscopic organisms underground, including:

  • Protozoa
  • Bacteria
  • Microfauna in wet soil

No manual feeding or fertilizer is needed.

Repotting

  • Only when overcrowded or media breaks down

Plants can spread quickly beneath the surface and fill containers over time.

Dormancy

Most tropical Genlisea do not require dormancy and grow year-round.

Growth may slow slightly in lower light or cooler conditions.

Common Issues

  • Slow growth → not enough light
  • Decline → drying out
  • Mold or algae → stagnant conditions
  • Disappearing plant → normal underground growth

Quick Reality Check

If your Genlisea isn’t thriving, it’s usually:

  • Not enough light
  • Not wet enough
  • Poor water quality

Fix those and they grow quickly and flower regularly.

Pro tip: These plants often grow more below the surface than above—healthy roots mean a healthy plant, even if top growth looks minimal.