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Drosera regia Care: Temperature, Light, and Soil Requirements for the King Sundew

Temperature

Cool nights (18–20°C) and cool roots are essential. Day temps around 25°C are fine.

Light

Full sun in a south window or strong fluorescents (≥12,000 lumens at 4–5 inches). No terrarium needed—it adapts to household humidity >15% if acclimated slowly.

Soil

Sphagnum peat + long-fiber sphagnum or live sphagnum. If using peat, mix 1:1 with perlite for drainage.

Lighting Safety

A professionally made HPS/LED fixture with a cooling fan is safer than a DIY 400W HPS over a terrarium in a bedroom.

Consult Sarracenia Northwest for more D. regia experience.

Good growing!

Carnivorous Plants: Drosera regia Soil Mix: Coarse Mix Works, But Use Large Pots; Drosera regia Root Bound? Two Plants in 12" Pot; Optimal Soil Mixes for Drosera regia: Germination vs. Mature Plants; Growing Drosera regia Outdoors in Midwest Heat: Not Recommended; Growing Drosera regia in Southern California: Light and Fertilizer Guide; Drosera regia Propagation: Root Cuttings Work, Leaf Cuttings Don't; Drosera Regia Watering: Keep It Drier Than Other Sundews; Growing Drosera Regia Under Metal Halide Lights; Drosera regia Flowering: Cut or Keep? Depends on Light; Repotting Drosera regia in Southern California: Big Pot, Loose Mix, Top-Watering

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