PERENNIALS | VEGETATIVE PROPAGATION
Helenium autumnale Sneezeweed HAYDAY ™
VERNALIZATION REQUIREMENT
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 75 ppm N when roots become visible. Rates can be increased up to 100 ppm N after roots become well developed.
Pinching is recommended; option to pinch after transplant.
First Year Flowering
Iberis sempervirens Candytuft SNOW CONE ™ / SNOW DOME ™ / SNOWSURFER ™ / SNOWDRIFT ™
VERNALIZATION REQUIREMENT
PROP TIME
BOTTOM HEAT
FERTILIZER
YOUNG PLANT COMMENTS
7–8 weeks
70–72 °F (21–22 °C) for the first three weeks
Begin fertilization at 80 ppm N when roots become visible. Rates can be increased up to 150 ppm N after roots become well developed.
Cold Required
Iberis x hybrida Candytuft ARIELLE ™ / MERMAID ™
VERNALIZATION REQUIREMENT
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 50 ppm N when roots become visible. Rates can be increased up to 75 ppm N after roots become well developed.
First Year Flowering
Lavandula angustifolia English Lavender AROMATICO ™
VERNALIZATION REQUIREMENT
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.
To help minimize the need to mist and still keep the humidity high tenting of the trays has been shown to be helpful.
First Year Flowering
Lavandula angustifolia English Lavender VINTRO ™
VERNALIZATION REQUIREMENT
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.
Cold Required
To help minimize the need to mist and still keep the humidity high tenting of the trays has been shown to be helpful. If necessary, a B-Nine ® WSG spray at 2,500 ppm can be applied.
Lavandula stoechas Spanish Lavender JAVELIN ™ FORTE / JAVELIN ™ COMPACT
VERNALIZATION REQUIREMENT
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.
First Year Flowering
To help minimize the need to mist and still keeping the humidity high tenting of the trays has been shown to be helpful. If necessary, spray B-Nine ® WSG at 1,500–2,000 ppm.
Leucanthemum maximum Shasta Daisy WESTERN STAR ™
VERNALIZATION REQUIREMENT
PROP TIME
BOTTOM HEAT
FERTILIZER
YOUNG PLANT COMMENTS
4–5 weeks
68–70 °F (20–21 °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.
Cold Beneficial
GROWER SUCCESS GUIDE 2026–2028
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