Vegetables · A patio or balcony in cool weather

Let’s grow
spinach.

Spinacia oleracea

Four plants. One pot. Fresh greens.

12 × 12 × 12 in.·8 seeds → 4 plants

Show me the steps ↓

Sources checked September 22, 2026 View sources ↗

Spinacia oleracea
Photo: Forest and Kim Starr · CC BY 2.0. Cropped for display.
LIGHTSun or light shade

Use a sunny spot; give afternoon shade when days warm up.

WATEREvenly moist

Keep roots moist, without leaving the pot sitting in water.

FEEDINGSteady nutrition

Start with enriched potting mix. Extra fertilizer can wait.

YOUR SIMPLE GROWING PLAN

One pot. Here’s the plan.

A patio or balcony in cool weather. Start with seeds.

THE POT12 × 12 × 12 in.

One square planter, with drainage holes.

HOW MANY8 seeds → 4 plants

Two seeds per spot, in a 2 × 2 grid, 6 inches apart.

  1. 01

    Fill and wet the mix

    Leave 1 inch below the rim. Water gently so the mix is evenly damp.

  2. 02

    Plant four little pairs

    Place 2 seeds in each of 4 spots, 6 inches apart. Cover with ½ inch of mix.

  3. 03

    Keep the surface moist

    Check each morning. Add a gentle sprinkle whenever the surface starts drying.

  4. 04

    Give each plant room

    When seedlings have 3–4 true leaves, snip the weaker plant at each spot. Keep 4 plants.

Another way to start

Use nursery starts+

Plant 4 small spinach starts at the same 6-inch spacing. Keep each root ball intact and plant at its existing soil level. Direct sowing avoids transplant disturbance.

01 / EVERYDAY CARE

When to water.

Check every morning. Once seedlings are up, feel the mix: water when it starts to dry; skip it when still damp. Water the soil slowly until a little runs out below, then empty the saucer.

The easy ruleCheck first. Water only when the plant needs it.
02 / PLANT FOOD

Exactly what to feed it.

With the fresh, enriched mix in this plan, skip added fertilizer at planting. Its starter nutrients last up to 2 months; a short crop may finish before you need more.

A SPECIFIC US PRODUCT

Miracle-Gro Water Soluble All Purpose Plant Food (US 24-8-16)

If you keep the crop growing after the starter feed runs out, mix 1½ tablespoons of the US 24-8-16 product into 1½ gallons of water. Apply at the roots every 14 days while actively growing. Use only enough to wet this pot and drain; do not empty the whole can into it.

Check the manufacturer’s product page ↗

Use the named US formulation. A different product or concentration needs different directions. The amount mixed is a batch, not a dose to pour into one pot.

03 / WHAT HAPPENS NEXT

A little patience pays off.

Look for sprouts in about 7–10 days when the soil is 55–65°F. Start picking outside leaves when they are big enough for your kitchen.

When should I start where I live?+

Choose a cool spell in spring or fall. Hot weather and lengthening days encourage bolting; a city-specific planting date comes from your local Extension office.

For regional planting windows, find your local Cooperative Extension office ↗.

Something looking off?

My spinach is growing a tall flower stalk.+

It is bolting. Pick the usable leaves now, then start a fresh crop in cooler weather. More fertilizer will not reverse flowering.

Can I grow spinach from a cut stem?+

Use seeds or nursery transplants for this plan. A grocery-store spinach leaf is not a reliable way to start a crop.

Do I need acidic fertilizer?+

No. Do not add an acidifier just because the plant needs nutrients. Fertility and soil acidity are different questions.

A little more growing know-how.

Why four plants?+

This is an intentionally simple container recipe: a 12-inch square pot, four planting positions, and two seeds per position before thinning. The pot size and spacing follow RHS guidance; the four-position layout is our editorial adaptation, not a tested yield claim.

Keep picking, gently+

Harvest outer leaves and leave the growing center intact. If the plant bolts or the leaves become bitter, finish the crop and sow again when conditions cool.

BEHIND THIS GUIDE

Where the advice comes from.

Plant care is based on the sources below. Planting layouts and beginner routines combine that guidance into one practical plan; they are editorial choices, not results from a Plant Care Steps growing trial.

Compiled with AI assistance. These first-edition guides have not yet had an independent horticultural review. Read our editorial approach.

Room for one more?

All plants →

ONE GOOD PLACE TO START

Not sure what to grow?

A herb for dinner, flowers by the door, or green on a shelf. Start with the space you already have.