Answer: Soggy soils can cause the yellowing leaves. Miracle Gro is an excellent fertilizer for pieris and should help green up the leaves. There's not much you can do about excessive rain, though. I'd prune the shrubs back to encourage healthy new growth. Acidic soil is fine for pieris. In fact, you can spread a mulch of peat moss over the soil beneath the plants to further acidify the soil. Prune them back and they should respond with healthy new growth. Let's hope the rains let up enough for the soil to dry out a bit!
Q&A Library Searching Tips