Outdoor Care for Lowland Nepenthes bicalcarata and Rescued Darlingtonia

Question: Received lowland bicalcarata. Species tips for outdoors? House too warm for wife. Upper 90s too hot? Full sun all day too much? Natural terrain? Also rescued Darlingtonia—new leaves die back with red patches. Heat or disease? Brought inside until cooler; spots resemble anthracnose.

Answer

Hi Dennis,

N. bicalcarata likes hot, humid. Full sun too intense—provide shade. Assumes humid region; if not, use large terrarium.

Darlingtonia may be lost cause. Red patches = heat + low soil oxygen. Transplant to wide pot (≥6") with equal parts peat, orchid bark, perlite/pumice. Partial sun, afternoon shade. Top-water daily with cool water (pot not sitting in water). Aeration vital. If survives month, drip system eases watering. Darlingtonia is for experienced growers—more effort than Sarracenia, especially in hot summers. Care sheet: www.cobraplant.com/caresheets.

Follow-up: Southern middle TN, July avg humidity 62.8%, yearly 65.3%. Sufficient? Small ventilated greenhouse with water tray for bicalcarata? Repotted Darlingtonia per advice—still has baby cobras but they die back as they grow; slow growth = low root O2.

Answer

Humidity fine—more than western Oregon. I grew N. mirabilis (lowlander) outdoors in Hendersonville, NC summer—did fine. Shade bicalcarata, should be fine until fall nights hit 50s.

Give Darlingtonia time. Even we lose some when transplanting. If alive by fall, past critical period. Cat litter pans with holes work well for multi-year Darlingtonia.

Good Growing!
Jeff Dallas
Sarracenia Northwest
www.cobraplant.com