About 10 weeks ago I planted one each Chinook, Cascade, Hallertau, and Tettnanger in pretty large 20.5 inch pots (pictured below). They were planted in potting mix then covered with mulch. I've noticed that some of the leaves on the Hallertau and Tettnanger have started to discolor and wilt. I don't know if it is due to under or over watering, or a lack of fertilizer. The potting mix had slow release fertilizer mixed in, and I hit them with Miracle Gro Organic Liquid (primary ingredient is beet molasses) fertilizer yesterday. The first three pictures are from my Hallertau, the fourth one is from my Tettnanger, and the last just shows the pots I planted in. Any help is greatly appreciated.