01 · Timing

When and how to begin

Direct sow in cool soil and repeat small sowings every couple of weeks.

02 · Growing sequence

See the crop change before it happens.

Illustrated growth sequence for lettuce, from establishment through mature harvest.
  1. 01Sow shallowly and keep the surface moist during germination.
  2. 02Thin seedlings so air can move between plants.
  3. 03Use afternoon shade as weather warms.
  4. 04Harvest in the cool part of the day.

03 · Below the surface

Give the roots their working volume.

Planting geometryDepth, roots, and final space
6–10 in final spacing
⅛ in

Fine, shallow roots need consistent moisture near the surface without waterlogging.

04 · Harvest

Know when it is ready

Visual decisionRead the plant, not only the date
Illustrated growth sequence for lettuce, from establishment through mature harvest.
Not yet

Still developing

Illustrated growth sequence for lettuce, from establishment through mature harvest.
Ready

Harvest outer leaves as needed or cut full heads before heat causes bitterness.

Illustrated growth sequence for lettuce, from establishment through mature harvest.
Past prime

Quality or vigor may decline when harvest is delayed beyond the intended stage.

05 · Common trouble

Inspect before you treat

Close botanical observation of holes in leaves, presented as a visual symptom rather than a diagnosis.
Holes in leavesCompare observations →
SlugsBoltingTip burn

Symptoms can share several causes. Check moisture, recent weather, and the complete plant before applying a treatment.

Open the illustrated problem solver →