PERENNIALS | VEGETATIVE PROPAGATION
VERNALIZATION REQUIREMENT CULTURE REQUIREMENT PLUG TIMING
PROP TIME BOTTOM HEAT
FERTILIZER
YOUNG PLANT COMMENTS
5–6 weeks
70–72 °F (21–22 °C) for the first three weeks.
Begin fertilization at 75 ppm N when roots become visible. Rates can be increased up to 100 ppm N after roots become well developed.
First Year Flowering
VERNALIZATION REQUIREMENT CULTURE REQUIREMENT PLUG TIMING
PROP TIME BOTTOM HEAT
FERTILIZER
YOUNG PLANT COMMENTS
5–6 weeks
68–70 °F (20–21 °C) for the first three weeks. After roots are well developed, temperatures can be lowered to 64–68 °F (18–20 °C) to hold and tone the cuttings.
Begin fertilization at 80 ppm N when roots become visible. Rates can be increased up to 150 ppm N after roots become well developed.
Pinching is recommended in prop 7–10 days prior to transplant leaving 4–6 nodes.
First Year Flowering A cold treatment for 7–8 weeks at 50 °F (10 °C) ADT is recommended to increase flowering uniformity; if providing cold treatment bump up to larger cell size.
7–8 weeks
VERNALIZATION REQUIREMENT CULTURE REQUIREMENT PLUG TIMING
PROP TIME BOTTOM HEAT
FERTILIZER
YOUNG PLANT COMMENTS
5–6 weeks
70–72 °F (21–22 °C) for the first three weeks.
Begin fertilization at 50 ppm N when roots become visible. Rates can be increased up to 75 ppm N after roots become well developed.
The use of tents during propagation to avoid over misting has also been found to be beneficial. If needed, a spray of B-Nine ® WSG at 500–1,500 ppm can be applied.
Cold Required
45–50 °F (7–10 °C); keep fertility on the low side to avoid excess soft growth, decreasing chance of disease pressures.
7–8 weeks
VERNALIZATION REQUIREMENT CULTURE REQUIREMENT PLUG TIMING
PROP TIME BOTTOM HEAT
FERTILIZER
YOUNG PLANT COMMENTS
5–6 weeks
68–70 °F (20–21 °C) for the first three weeks. After roots are well developed, temperatures can be lowered to 64–68 °F (18–20 °C) to hold and tone the cuttings.
Begin fertilization at 80 ppm N when roots become visible. Rates can be increased up to 150 ppm N after roots become well developed.
Lighting should be under short days to promote vegetative growth.
First Year Flowering
VERNALIZATION REQUIREMENT CULTURE REQUIREMENT PLUG TIMING
PROP TIME BOTTOM HEAT
FERTILIZER
YOUNG PLANT COMMENTS
5–6 weeks
70–72 °F (21–22 °C) for the first three weeks
Begin fertilization at 50 ppm N when roots become visible. Rates can be increased up to 100 ppm N after roots become well developed.
Lighting should be under short days to promote vegetative growth.
First Year Flowering
VERNALIZATION REQUIREMENT CULTURE REQUIREMENT PLUG TIMING
PROP TIME BOTTOM HEAT
FERTILIZER
YOUNG PLANT COMMENTS
4–5 weeks
70–72 °F (21–22 °C) for the first three weeks
Begin fertilization at 100 ppm N when roots become visible. Rates can be increased up to 200 ppm N after roots become well developed.
First Year Flowering
VERNALIZATION REQUIREMENT CULTURE REQUIREMENT PLUG TIMING
PROP TIME BOTTOM HEAT
FERTILIZER
YOUNG PLANT COMMENTS
6–7 weeks
70–72 °F (21–22 °C) for the first three weeks
Begin fertilization at 50 ppm N when roots become visible. Rates can be increased up to 100 ppm N after roots become well developed.
1 pinch is recommended, 7–10 days prior to transplant leaving 4–6 nodes.
First Year Flowering Erysimum’s cold hardiness allows it to be produced in the fall and finished for early spring sales.
GROWER SUCCESS GUIDE 2024–2025
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