Lettuce Companion Planting

Radish matures in 25-35 days, well before lettuce heads need the space. Radish taproots break surface compaction, improving soil structure for lettuce's fibrous root system. Efficient succession use of space.

Sow radish and lettuce seed simultaneously. Harvest radish as lettuce matures.

Lettuce intercropped with kohlrabi provides ground cover that conserves moisture and suppresses weeds. Different growth habits and root depths reduce competition. Efficient use of bed space.

Plant lettuce between kohlrabi. Harvest lettuce as kohlrabi bulbs expand.

Daikon radish taproots break compacted soil layers, improving soil structure for lettuce fibrous root systems. Different maturity rates allow efficient succession use of space.

Daikon's deep taproot improves drainage and aeration. Both are cool-season crops.

Flowering cilantro attracts parasitoid wasps and hover flies that prey on lettuce aphids (Nasonovia ribisnigri). Quick-bolting cilantro provides continuous floral resources through succession planting.

Succession-sow cilantro every 2-3 weeks among lettuce beds for continuous bloom.

Chive volatiles (dipropyl disulfide, allicin precursors) deter aphids (Nasonovia ribisnigri, Myzus persicae) through olfactory disruption. Chive flowers also attract predatory hover flies and parasitoid wasps.

Border lettuce beds with chives. Allow some chive flowers for beneficial insect attraction.

Garlic allyl sulfide compounds deter lettuce aphids (Nasonovia ribisnigri). Fall-planted garlic provides early-season volatile emission when spring lettuce is most vulnerable to aphid colonization.

Garlic planted in fall is already established when spring lettuce goes in. Efficient use of bed space.

Radish matures in 25-35 days and is harvested before lettuce needs full canopy space. Radish taproots break surface compaction, creating soil channels for lettuce fibrous roots. This is a well-documented relay intercropping system.

Sow radish and lettuce seed simultaneously. Radish marks rows and is harvested as lettuce matures.

Both are cool-season leafy greens with compatible growth rates and shallow root systems. Interplanting maximizes bed productivity during the cool-season growing window.

Mix lettuce and spinach in the same bed for diverse harvest. Both tolerate light frost.

Basil volatile emissions (linalool, eugenol) repel aphids. Basil's taller growth provides light shade that extends lettuce harvest in warm weather by delaying bolting.

Plant basil among lettuce rows in summer. The shade benefit is particularly valuable for heat-sensitive lettuce varieties.

Snow pea nitrogen fixation benefits lettuce. Pea vines on trellises provide dappled shade that extends lettuce harvest by delaying bolting in warm weather.

Trellis snow peas on the south side of lettuce beds for optimal shade in late spring.