How to winter-over "Super Spike" ( Cordyline Indivisa ) - Knowledgebase Question

Clarkston, Mi
Question by upnorthjeff
November 29, 2005
How can I properly and successfully winter-over Super Spike plants, (Cordyline Indivisa), after having been used as outdoor landscape plants here in Michigan, given our average cold temps of 0 to +30 degrees?


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Answer from NGA
November 29, 2005

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Since they are rated for USDA zones 9-10, I'm assuming you have them in pots and can bring them indoors as they wouldn't survive your winters. Keep it in bright indirect light away from drafts and heating units. Let the top couple of inches of soil dry out before watering thoroughly. Apply a balanced fertilizer once per month. In spring, slowly ?harden off? or acclimate your plant to moving back outdoors by putting it outside in a sheltered location for a couple hours at a time, gradually increasing the time period. In fall, do that in reverse, rather than abruptly moving from outside to inside, which will help lessen the shock. I hope this info helps!

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