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Old December 7, 2012   #14
Sun City Linda
Tomatovillian™
 
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Join Date: Mar 2011
Location: SoCal Inland
Posts: 2,705
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I grow in high heat, mostly containers many EarthBoxes. I have made my own mix and I have also had wonderful results with packaged potting mix including those with Miracle in the name. Earthbox advises against using manure or compost as they are counter productive to the wicking proccess.

I find Fourth of July Hybrid to to indestructable by heat, although I rarely get over 110. Siux is good in heat too, although most all of them will shut down in the extreme late summer temps of TX and the desert southwest.
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