Drosera Regia Leaf Tip Browning: Humidity, Water, or Temperature?

Drosera Regia Leaf Tip Browning: Humidity, Water, or Temperature?

Jason (AZ) has D. regia in peat/sand, 7–8" under shop lights. Leaves have dew, red bases, ~1" long. New leaf tips blacken after a week; rest of leaf functions. In 20-gal tank with D. capensis (thriving), no lid, moderate humidity. Distilled water, 4" pot, plant not large. Day 70s, night 60s.

Possible Causes

• Low humidity? Unlikely—D. capensis would show it too.
• Mineral buildup? Even RO leaves traces if source water is hard.
• Inconsistent watering? D. regia hates dry spells.
• Root-bound in 4" pot? D. regia has large roots; may need more space.
• Constant waterlogging? Deep tray water can start rot.
• Temperature? Ideal: 70s day, 50s–60s night with night cooldown.

Suggestions

• Try a few Osmocote pellets (per ICPS guide).
• Monitor new plant from nursery for comparison.
• ICPS D. regia guide.

Key Takeaway

Leaf tip browning on D. regia usually signals root zone issues (watering consistency, pot size, minerals) or insufficient night cooling—not humidity.