Notes
Group 1 (Potomac). Do not pinch. Two Hortonova layers at 12 and 24 in. Cut when ⅓–½ florets open.
Cultivars / Cut flowers
Potomac White
Snapdragon · Antirrhinum majus
DTM
85 d
114 d occupancy · moderate
Rows
4
6 in in-row
Density
8
plants / bed-ft
Yield
8
stems / bed-ft
Direct $/ft
$10.08
$1.40 / stem
Cut flower protocol
Spike · 30 in stem
- Support netting
- 2-layer Hortonova · 6 in mesh · 12 in / 24 in
- Pinch
- Do not pinch
- Harvest stage
- ½ open · every 5 d
- Stem yield
- 3 / plant · 8 / bed-ft
- Pulse
- Citric-acid hydration · vase 8 d
- DTM on this sheet
- 85 d field-to-cut
Propagation
- Method
- Transplant
- Cell size
- 128s
- Nursery lead
- 42 d
- Germination
- 8 d
- Germ temp
- 60°F – 80°F (opt 70°F)
- Seed spacing
- 1½ in
Field geometry · 30 in
- Bed width
- 30 in
- Rows / bed
- 4
- In-row
- 6 in
- Seed spacing
- 1½ in
- Plants / linear ft
- 8
- Plants / 50 ft
- 400
Timeline
- DTM from field
- 85 d
- Holding
- 14 d
- Occupancy
- 114 d
- Multicut
- yes · 4 cuts · 5 d
- Fall photoperiod
- ×1
- Frost hardiness
- Moderate
Yield & revenue
- Sales unit
- stem
- Units / bed-ft
- 8
- Avg unit wt
- 0.1 lb
- Target lb / bed-ft
- 0.4 lb
- Cull rate
- 10%
- Wholesale / Direct
- $0.70 / $1.40
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
- Heavy
- N / 100 bed-ft
- 1.8 lb
- P / 100 bed-ft
- 0.4 lb
- K / 100 bed-ft
- 2.4 lb
- N-P-K / 50 ft
- 0.9 / 0.2 / 1.2 lb
- Family
- Plantaginaceae
On this farm · 50 ft block
- Season window
- 2026-03-25 → 2026-10-11
- First greenhouse
- 2026-02-11
- First harvest
- 2026-06-18
- Successions that fit
- 2 · every 21 d
- Bed-ft for 50 lb
- 139 ft
- Seed for 50 ft
- 471 seeds · 400 plants
- Wholesale / Direct · 50 ft
- $252.00 / $504.00
Companions
basil · dill · alyssum
Avoid
fennel