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Best Soil Blend for a Vegetable Garden Box

Straight topsoil lacks drainage; straight garden soil compacts. A 50/50 blend balances both.

Recommended Mix

50% bagged topsoil (mostly composted bark).
50% garden soil / compost blend.
Add 10% perlite if mix feels heavy.

Why Not Pure Topsoil?

Most bagged topsoil has no mineral soil—just organic matter. It shrinks, dries unevenly, and lacks structure. The blend provides mineral content for stability and organic matter for fertility.

Soil Issues: Testing Soil pH for Blueberries and Estimating Yield from a Small Planting; Buying Bulk Soil for a Vegetable Garden: How to Evaluate Topsoil and Choose a Balanced Garden Mix; Why Perlite Is a Poor Long-Term Soil Amendment and How Tillage and Organic Matter Better Mimic Natural Soil Building; Reviving a Stunted Garden on Shale-Derived Clay; Quick Clay Soil Improvement for Vegetable Garden; Preparing Arizona Desert Soil for a Vegetable Garden; Transitioning from Miracle-Gro to an Organic Garden; Grow a Backyard "Money Tree": Save $500+ with a Home Vegetable Garden; Growing a Vegetable Garden from Seed: Outdoor Planting Steps for Beginners; Winter Windowsill Garden: Growing Vegetables & Herbs Indoors All Winter

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