Basil Container Soil Mix
Ocimum basilicum
Fertile, evenly-moist mix for big leafy harvests from a heat-loving annual.
- Container:
- 1-5 gal
- pH:
- 6–7
- Sun:
- 6–8 hr
- Light:
- Full sun (6-8 hours)
Components
Percentages by volume. Quantities scaled for a 2-gallon container (US units).
| Component | % | Amount |
|---|---|---|
| Quality potting mix Base structure, initial nutrients | 45% | 3.5 qt |
| Coco coir (low-EC, buffered) CEC, moisture buffering | 20% | 1.5 qt |
| Vermicompost / Worm castings Nutrients, microbes, growth hormones | 15% | 1 qt |
| Aged compost Microbial diversity | 10% | 3.25 cup |
| Perlite Drainage, aeration | 10% | 3.25 cup |
Per-container amendments
Scaled linearly to your container size. Apply at transplant or as side-dress per the notes on each line.
- Balanced organic fertilizer (4-4-4 / 5-5-5) Mix into top 4" at planting; side-dress monthly during peak growth.2–3 tbsp
- Kelp meal Trace minerals + light potassium for leaf quality.1 tbsp
- Mycorrhizae inoculant Sprinkle on root ball at transplant.1 tsp
Growing notes
- Basil is a heavy leaf-producer that wants a rich, organic, moisture-retentive mix — push compost/vermicompost a bit higher than for woody herbs.
- Keep the mix evenly moist; containers dry fast, so check daily in summer.
- Pinch flower spikes as they form to keep the plant leafy and tender.
- Side-dress with a balanced organic fertilizer every 4-6 weeks; over-feeding flattens flavor.
- Move outdoors only after nighttime temps reliably exceed 50°F — cold soil stunts plants.
Want to scale this to a different container size, save it to a plot plant, or track applied dates? Open it in the interactive calculator.
References
- Growing basil in home gardens — University of Minnesota Extension . University of Minnesota Extension
- Basil — Clemson Cooperative Extension HGIC . Clemson Cooperative Extension HGIC
- Growing Basil in Your Backyard — University of Illinois Extension (2020) . University of Illinois Extension