Agave utahensis x Agave kaibabensis 'Shark teeth'
Agave utahensis x Agave kaibabensis 'Shark teeth' is a hybrid grown at our nursery and is an exclusive. Plants have taken -22F on several occasions and negative teens in Colorado. Plants want good drainage and being dry in winter. We call it 'Shark teeth' because of the series of teeth along the leaf edges.
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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