Two successive plantings of holly bushes failing in the same spot—morning sun, near crabapples—strongly indicates a drainage problem. Hollies demand well-drained, acidic soil. Heavy clay or low spots collect water, suffocating roots (which need oxygen) and promoting root rot.
Test drainage: dig a 12-inch hole, fill with water. If it doesn't drain in 2-3 hours, you have a problem. Amend the entire planting area (not just holes) with 3-4 inches of compost, worked in 12 inches deep. Create raised beds or berms if needed. Plant high—root flare visible.
Water carefully: deep soak weekly, not frequent light watering. Mulch 3 inches. Fertilize with Holly-tone in fall.
The one survivor proves the species can work there—fix the soil, and the rest will too.
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