Fixing Crusty, Compacted Potting Soil in Tomato Containers

Why Potting Soil Crusts Over

Crusting indicates organic matter breakdown and/or high mineral content from fertilizer salts. Limited sun (few hours) slows plant uptake, exacerbating salt buildup.

Immediate Remediation

1. Gently break crust with a fork—don't damage shallow roots.
2. Top-dress with 1 inch compost or fresh potting mix.
3. Mulch with straw to prevent re-crusting and conserve moisture.

Watering Correction

• Water when top 2 inches are dry—not on a fixed schedule.
• Deep soak until drainage—ensures even moisture and leaches salts.
• Morning watering reduces evaporation.

Soil Improvement for Next Season

• Use high-quality potting mix with perlite/vermiculite.
• Add 20% compost at planting.
• Incorporate slow-release fertilizer—avoid frequent liquid feeding that builds salts.

Sunlight Reality Check

Tomatoes need 6-8 hours direct sun. "A few hours" will limit yield regardless of soil care. Consider moving pots to sunniest spot or using reflective surfaces.

Calcium & Blossom End Rot

Weekly crushed calcium tablets help, but consistent deep watering (preventing wet-dry cycles) is more critical for calcium uptake.