Notes
30-inch 4-row 6 in. One-cut or full head. Shade 30% after June 1 in zone 7–8. Hold 34°F 98% RH.
Cultivars / Leafy greens
Salanova Red Butter
Lettuce · Lactuca sativa
DTM
54 d
64 d occupancy · hardy
Rows
4
6 in in-row
Density
8
plants / bed-ft
Yield
8
heads / bed-ft
Direct $/ft
$22.08
$3.00 / head
Propagation
- Method
- Transplant
- Cell size
- 128s
- Nursery lead
- 24 d
- Germination
- 5 d
- Germ temp
- 40°F – 80°F (opt 68°F)
- Seed spacing
- ½ in
Field geometry · 30 in
- Bed width
- 30 in
- Rows / bed
- 4
- In-row
- 6 in
- Seed spacing
- ½ in
- Plants / linear ft
- 8
- Plants / 50 ft
- 400
Timeline
- DTM from field
- 54 d
- Holding
- 10 d
- Occupancy
- 64 d
- Multicut
- no
- Fall photoperiod
- ×1.15
- Frost hardiness
- Hardy
Yield & revenue
- Sales unit
- head
- Units / bed-ft
- 8
- Avg unit wt
- 0.4 lb
- Target lb / bed-ft
- 3.2 lb
- Cull rate
- 8%
- Wholesale / Direct
- $1.75 / $3.00
Irrigation
- Drip lines / bed
- 2
- Emitter spacing
- 8 in
- Emitter GPH
- 0.42
- Weekly water
- 1 in
- GPH / 50 ft
- 63
- Gal / week · 50 ft
- 77.9
Soil extraction
- Fertility demand
- Moderate
- N / 100 bed-ft
- 1.4 lb
- P / 100 bed-ft
- 0.35 lb
- K / 100 bed-ft
- 1.6 lb
- N-P-K / 50 ft
- 0.7 / 0.2 / 0.8 lb
- Family
- Asteraceae
On this farm · 50 ft block
- Season window
- 2026-03-04 → 2026-11-10
- First greenhouse
- 2026-02-08
- First harvest
- 2026-04-27
- Successions that fit
- 14 · every 7 d
- Bed-ft for 50 lb
- 17 ft
- Seed for 50 ft
- 471 seeds · 400 plants
- Wholesale / Direct · 50 ft
- $644.00 / $1104.00
Companions
carrot · onion · radish
Avoid
broccoli · fennel