Spinach
A cool spring or fall spell
- Pot
- 12 × 12 × 12 in.
- Start with
- 8 seeds → 4 plants
- Light
- Use a sunny spot; give afternoon shade when days warm up.
Shopping & care for spinach
Planting notes
One square planter with drainage holes. The shopping calculation uses inside dimensions.
Two seeds per spot, in a 2 × 2 grid, 6 inches apart.
Sow two seeds at each of four positions; thin to four plants. Keep the seed surface moist.
What to buy
Buy 1 × 1 cu ft bag.
Mix: Miracle-Gro Organic Potting Mix (US) — bag details
Shopping allowance: Budget up to 26 L (0.92 cu ft).
How this amount was estimated
Worked example: a straight-sided planter with INSIDE dimensions of 12 × 12 × 12 inches, filled to 1 inch below the rim. A tapered pot or nursery starts use less fresh mix. If your planter is deeper, check its capacity before buying.
Starter nutrients — shared instructions
Water & later feeding
Water: Check each morning. Water as the mix starts drying; wait if damp. Wet the root zone and let excess drain.
Later feed: Miracle-Gro Water Soluble All Purpose Plant Food (US 24-8-16)
1½ tablespoons in 1½ US gallons of water
How to apply a diluted batch — shared instructions
When: Every 14 days during active growth.
Start / pause: Skip extra feed at planting. Follow your potting-mix bag’s starter-feeding directions before adding this routine; “up to 2 months” is not a fixed waiting period. Feed only while actively growing. A short crop may finish without extra feed.
Read the full feeding instructions


