Container Garden Soil Mix: 5 Recipes for Vegetables, Herbs, and Flowers
Why Custom Soil Mixes?
Store-bought potting soil is expensive ($8-15 per cubic foot). Custom mixes cost 50-70% less and are optimized for specific plant needs.
The 5 Essential Components
| Component | Purpose | Cost (per cu ft) |
|---|---|---|
| Coconut coir | Water retention, structure | $1-2 |
| Perlite | Drainage, aeration | $2-3 |
| Vermiculite | Water + nutrient retention | $2-3 |
| Compost | Nutrients, microbial life | $0.50-1 |
| Worm castings | Concentrated nutrients | $3-5 |
Recipe 1: All-Purpose Vegetable Mix
- 2 parts coconut coir (rehydrated)
- 1 part compost
- 1 part perlite
- 1/2 part worm castings
Recipe 2: Succulent and Cactus Mix
- 2 parts coarse sand
- 1 part perlite
- 1 part coconut coir
Recipe 3: Seed Starting Mix
- 2 parts peat moss (fine screened)
- 1 part vermiculite (fine grade)
- 1 part perlite (fine grade)
Recipe 4: Flower Container Mix
- 2 parts coconut coir, 1 part compost, 1 part perlite, 1/4 part worm castings
Recipe 5: Orchid Mix
- 3 parts fir bark, 1 part perlite (coarse), 1 part charcoal, 1/2 part sphagnum moss
Final Thoughts
One afternoon of mixing soil saves hundreds of dollars over a season. Start with Recipe 1 — it works for 90% of container plants.