Rlc (Blc) Greewich 'Elmhurst' has about 1/2 cold-tolerant species [Rl.(B) digbyana+C. mossiae+C.( L.] purpurata), 1/3 warm-growing species [C. granulosa] and the rest a mixed bag, leaning to the warm side. So for cold tolerance, it's on the marginal side. 40 deg. F is pushing it... maybe if kept dry. But if it were my plant, i'd probably want to bring it in when nights get much below 50 deg F. (based on the composition of the hybrid).
Last edited by Roberta; 01-12-2019 at 01:45 AM..
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