Fertilizer Spikes for Roses by Jobe's Planet Natural Primehome 2 Pack 24 Inch Metal Window Box Planter Black Rectangular Flower Pot with Coconut Fiber Liner for Fence Deck First full harvest of the season. We used a seaweed based fertilizer earlier in the spring, which contains boron and other trace elements that standard commercial stuff lacks. It loved it; look at How to Grow Peppers from Seeds Chioggia Beet (Heirloom, 55 Days)