Hydrangea Stunted by Clay: The Importance of Wide Planting Holes

The Problem

Roots stay in the amended planting hole, refusing to penetrate surrounding clay. Top growth outpaces root zone, causing water/nutrient stress.

Loosen soil five times wider than the root ball at planting. Mix in soil conditioner.

Difficult. Vertical mulching (drilling holes, filling with compost) may help, but prevention is far easier.

About Gardening: How to Turn Hydrangea Blooms Blue: Soil pH and Fertilizer Guide; Reviving Fruit Trees in Heavy Clay Soil; Amending Clay Soil: Mix Compost Thoroughly, Avoid Layering; Improving Clay Soil for Root Vegetables in the Orkney Islands; Improving Clay Soil for a New Garden After Pine Removal; Fixing Sod Laid Over Clay Without Tilling: Short- and Long-Term Solutions; Amending Clay Fill Soil for Long-Term Garden Health; Why Root Crops Fail: Fixing Soil Imbalance in Garden Boxes; Improving Clay Soil on a Farm: Plants & Techniques for Better Drainage; Amending Clay Soil for Perennials and Trees: Compost, Peat, Gypsum, Not Lime

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