Vegetables · A patio or balcony in cool weather

Let’s grow
leaf lettuce.

Lactuca sativa

Four small plants. Pick a few leaves for lunch.

12 × 12 × 8 in.·8 seeds → 4 plants

Show me the steps ↓

Sources checked September 22, 2026 View sources ↗

Bright green, loose ruffled leaves of Ashbrook lettuce growing in soil.
Photo: DeFacto · CC BY-SA 4.0. Cropped for display. Loose-leaf lettuce, cultivar Ashbrook.
LIGHTSun or light shade

Choose a bright spot; some afternoon shade helps as days warm.

WATERKeep lightly moist

Young salad leaves do best without repeated drying out.

FEEDINGStarter feed first

Fresh enriched potting mix may cover your first small crop.

YOUR SIMPLE GROWING PLAN

One pot. Here’s the plan.

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

THE POT12 × 12 × 8 in.

A square planter at least 8 inches deep, with drainage.

HOW MANY8 seeds → 4 plants

Four spots, 6 inches apart. Harvest young leaves, not big heads.

  1. 01

    Wet the mix first

    Fill the planter, leaving 1 inch below the rim. Water until the mix is evenly damp.

  2. 02

    Sow four pairs

    Mark a 2 × 2 grid with spots 6 inches apart. Put 2 seeds at each spot and cover with ¼ inch of mix.

  3. 03

    Keep the surface from drying

    Check each morning and sprinkle gently as needed. Once seedlings have a few true leaves, snip the weaker one at each spot.

  4. 04

    Pick small, tender leaves

    Keep 4 plants. Take a few outer leaves at a time and leave the center growing. This close layout is for young-leaf harvests.

Another way to start

Buy small nursery starts+

Plant 4 loose-leaf lettuce starts at the same four spots, with their root balls at the existing soil level. Choose individual young plants rather than squeezing a whole crowded nursery cell into each spot.

01 / EVERYDAY CARE

When to water.

Check every morning. If the surface is beginning to dry, water gently at soil level until a little drains below. Skip watering while the mix is still damp. Seedlings need a moist surface; established plants need moisture throughout the root zone.

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

Exactly what to feed it.

Add no extra fertilizer at sowing with the fresh, enriched mix listed here. The bag claims starter feeding for up to 2 months; a short young-leaf crop may finish before a top-up is needed.

ONLY IF THE CROP OUTLASTS THE STARTER FEED

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

For a crop still actively growing after the starter nutrients are used up, mix 1 tablespoon of the US 24-8-16 product into 1 gallon of water. Feed at the roots every 14 days. Use enough solution to wet this planter and drain, not the entire gallon.

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.

Begin taking leaves when they are large enough to use, leaving plenty behind. Cool conditions and the seed variety affect the pace; a packet’s baby-leaf estimate is more useful here than its full-head harvest date.

When should I start where I live?+

Start in a cool spring or fall spell. Hot weather makes a fresh batch harder to establish and encourages flowering. Local planting windows matter more than a single month for the whole US.

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

Something looking off?

Why does the lettuce taste bitter?+

Heat and flowering can turn lettuce bitter. If the plant sends up a tall flowering stem, finish the crop and start again in cooler weather.

Can I grow four iceberg heads in this pot?+

This recipe is for loose-leaf lettuce picked young. Full-size lettuce plants need more space; use a separate plan for iceberg or full-size romaine.

Should I pull out the extra seedlings?+

Snip them at the surface instead. That leaves the roots of your four keepers undisturbed.

A little more growing know-how.

Why this layout?+

Four marked positions make sowing and thinning easy to follow. The 6-inch spacing is our container adaptation of young-leaf guidance, not a promise that four large, mature lettuces will fit.

A second pot, later+

If you enjoy your first harvest, start another small pot while the first is still producing. Keep each sowing labeled so you know which crop is young and which is nearly finished.

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.