Mammillaria heyderi ssp. macdougalii Santa Catalina Mts, AZ 7000ft

Mammillaria heyderi ssp. macdougalii or Green-Flowered Pancake Cactus is a semi-cold hardy plant from southern Arizona. The seed for this plant was collected on Mt Lemmon at 7000ft. These have taken -11F for us but they were in a very protected location. These bloom green in early spring and get a deep taproot like a turnip. Only a few available this time.


I do not guarantee these in a zone 5/6 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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