Antirrhinum

(seed; cutflower)

Stage 1

Rooting hormones
No

Vermiculite cover
No

Soil temp (min)
70

Soil temp (max)
75

Irrigation frequency
Medium

Surfactant
No

Time (min)
4

Time (max)
8

Stage 2

Soil temp (min)
65

Soil temp (max)
70

Moisture
Dry

Fertilizer
none

Soil EC
<0.50

Time (min)
7

Time (max)
7

Stage 3

Soil temp (min)
62

Soil temp (max)
65

Allow to wilt
No

Wash leaves
No

Fertilizer
100-150 1x/wk

Soil EC
<0.75

Time (min)
14

Time (max)
14

Stage 4

Soil temp (max)
62

Allow to wilt
No

Wash leaves
No

Fertilizer
100-150 1x/wk

Soil EC
<0.75

Time (min)
5

Time (max)
6

General

  • Control early stretch with low starter charge, moisture, fertilizer, and DIF
  • Sensitive to high salts during early stages
  • Control disease with moisture, air movement, and fungicides
  • Watch for leaf burn on sunny days
  • 5-6 weeks total crop time

adapted from data published by Dr. Roger Styer