Aloe striatula 'Hardy Aloe'
Aloe striatula (syn: Aloiampelos striatula) is one of the more hardy Aloe coming from South Africa. This plant has survived several winters in Colorado and is being grown in Denver at the botanical garden and Pueblo, CO. Plants tend to die to the ground below 0F and come back from the roots, they survived -17F. Plants can get 18" tall and 10" wide in 1 season and are prolific in the garden. These can also be grown in pots and can be pruned to stay smaller. Good drainage is required for these aloes. There are several species of aloe or aloe relatives that can take cold temperatures.
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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