Balcony Lettuce Ready in 30 Days With Cut-and-Come-Again

If you want fast results in your urban garden, start with lettuce: it grows in weeks, takes little space and, with "leaf" varieties, you can pick individual leaves for weeks without pulling the plant. It's almost impossible to fail.

Fact	Lettuce in pots
Pot depth	6 inches
Spacing	6-8 inches (dense for baby leaf)
Light	Soft sun or part shade (4-6 h)
Watering	Steady; daily in heat
Harvest	From 30 days (leaf)
Best season	Spring and fall

Varieties for pots

• Leaf (oak leaf, lollo, batavia): the best for pots. Pick outer leaves and they keep growing (cut-and-come-again).
• Heading (butterhead/iceberg): form a head; they need more room and are harvested whole.
• Mix them with arugula, lamb's lettuce or baby spinach for a "salad bowl."

How to grow it, point by point

Pot and soil

• Lettuce has shallow roots: just 6 inches deep is enough. Long planters and crates are ideal.
• Rich soil with compost and good drainage. Leave 6-8 inches between plants (or sow densely for "baby leaf").

Light and temperature

• It wants soft sun or part shade: 4-6 hours. It tolerates less sun than fruiting plants.
• It's a cool-season crop (spring and fall). In hot weather it bolts (goes to flower) and turns bitter; in summer, give it partial shade.

Watering

Lettuce is mostly water, so it wants steady moisture:

• Water often so the soil doesn't dry out; in heat, daily.
• Water the base, ideally in the morning. Lack of water makes it bitter and bolt sooner.

The cut-and-come-again trick

With leaf types, don't pull the plant: cut the outer leaves, leaving the center (the heart) intact. New leaves regrow within days. A single plant gives you several "harvests."

Because they grow fast and take little room, lettuces get along with almost everything: slip them in with radishes, which crop before they get in the way, or with carrots, which take months to fill the pot. And if you want a leaf with more character in the same planter, sow arugula.

Common problems

• Bolting (going to flower): heat or lack of water. Harvest earlier and give shade.
• Slugs and snails: if growing outdoors, check at night.
• Aphids: wash off with a jet of water or insecticidal soap.

Sow every 2-3 weeks for a staggered supply of fresh lettuce year-round. Lettuce looking off? Try the AI diagnosis.