Comments regarding Proven Winners

Lovely site, but not consistent for information. Clearly their best customer is the big-box store that doesn't depend on being informative to make the sale. That said, if you ask them directly (e.g. twitter) they do know their stuff. Have never had any difficulty getting the product to grow, whether it is purchased through various mail-order nurseries, independent garden centres, or big-box stores. A little effort in ensuring you're leaving enough room, proper pH, and things in that regard are on you to find, but gardening should challenge you anyway.