Notes
Curly F1, darker than Winterbor. Same 2-row geometry.
Cultivars / Brassicas
Darkibor
Kale · Brassica oleracea var. sabellica
DTM
55 d
179 d occupancy · extreme
Rows
2
12 in in-row
Density
2
plants / bed-ft
Yield
1.6
bunches / bed-ft
Direct $/ft
$5.89
$4.00 / bunch
Propagation
- Method
- Transplant
- Cell size
- 128s
- Nursery lead
- 32 d
- Germination
- 6 d
- Germ temp
- 40°F – 80°F (opt 68°F)
- Seed spacing
- 2 in
Field geometry · 30 in
- Bed width
- 30 in
- Rows / bed
- 2
- In-row
- 12 in
- Seed spacing
- 2 in
- Plants / linear ft
- 2
- Plants / 50 ft
- 100
Timeline
- DTM from field
- 55 d
- Holding
- 40 d
- Occupancy
- 179 d
- Multicut
- yes · 8 cuts · 12 d
- Fall photoperiod
- ×1.05
- Frost hardiness
- Extreme
Yield & revenue
- Sales unit
- bunch
- Units / bed-ft
- 1.6
- Avg unit wt
- 0.8 lb
- Target lb / bed-ft
- 1.2 lb
- Cull rate
- 8%
- Wholesale / Direct
- $2.50 / $4.00
Irrigation
- Drip lines / bed
- 2
- Emitter spacing
- 8 in
- Emitter GPH
- 0.42
- Weekly water
- 1.1 in
- GPH / 50 ft
- 63
- Gal / week · 50 ft
- 85.7
Soil extraction
- Fertility demand
- Heavy
- N / 100 bed-ft
- 2.2 lb
- P / 100 bed-ft
- 0.55 lb
- K / 100 bed-ft
- 2.4 lb
- N-P-K / 50 ft
- 1.1 / 0.3 / 1.2 lb
- Family
- Brassicaceae
On this farm · 50 ft block
- Season window
- 2026-02-18 → 2026-11-24
- First greenhouse
- 2026-01-17
- First harvest
- 2026-04-14
- Successions that fit
- 3 · every 21 d
- Bed-ft for 50 lb
- 46 ft
- Seed for 50 ft
- 118 seeds · 100 plants
- Wholesale / Direct · 50 ft
- $184.00 / $294.40
Companions
allium · beet · lettuce
Avoid
strawberry · tomato