10 Plants for Year Round Containers Fine Gardening Hey everyone, tips for growing lavender in a pot? It's not the biggest pot, I'm sure it should probably be bigger but I used the recommended minimum pot diameter width which is said 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 Edamame Seeds Planting Chioggia Beet (Heirloom, 55 Days)