Joseph in Harrisburg, PA (zone 6a) has 2 months below freezing; 12" mulched bog garden and garage-stored potted plants (including cobra plant) froze solid. Jeff Dallas: bog garden likely fine if mulched well (links Ontario bog guide). Garage storage: "Depending on how long, and how cold it was in the garage, your cobra should be just fine. Since a garage is wind sheltered, plants can take quite a bit of cold that way." Cobra plants experience snow/freezing in PNW. Sarracenia fine. Most tender: Florida Giant dewthreads, D. filiformis tracyi, strangely S. leucophylla 'Titan' (Tarnok tough).
Good Growing!
Jeff Dallas
Sarracenia Northwest
https://www.cobraplant.com
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