Echinocereus viridiflorus weedinii
Echinocereus viridiflorus forma weedinii comes from several hilltops in the Trans-pecos region of Texas. This plant gets brown to yellow spines. Plants are named after Dr. Jim Weedin.
Plants have taken -11F for us with no problems in colorado. We are growing it in a well drained rock garden. Should be one of the more cold-hardy varieties of Green Pitaya.
I do not guarantee these in a zone 5 because everyones growing conditions are different but this would be a good trial plant to grow in your cold outdoor garden. Try to plant outdoor 90 days before 1st hard freeze.
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