PERENNIALS | VEGETATIVE PROPAGATION
Lithodora diffusa Lithodora TIDEPOOL ™
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 100 ppm N when roots become visible. Rates can be increased up to 200 ppm N after roots become well developed.
The use of tents during propagation to avoid over misting has also been found to be beneficial.
Cold Required
Perovskia atriplicifolia Russian Sage ZEPHYR ™ COMPACT BLUE
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.
The use of tents during propagation to avoid over misting has also been found to be beneficial.
First Year Flowering
Phlox paniculata Garden Phlox SWEET SUMMER ®
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 100 ppm N when roots become visible. Rates can be increased up to 200 ppm N after roots become well developed.
The use of tents during propagation to avoid over misting has also been found to be beneficial.
First Year Flowering
Phlox subulata Moss Phlox GOLDIPHLOX ™ / PHLOX TROT ™
VERNALIZATION REQUIREMENT
PROP TIME
BOTTOM HEAT
FERTILIZER
YOUNG PLANT COMMENTS
8–9 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.
Cold Required
Salvia x superba Salvia BORDEAU ™
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 100 ppm N when roots become visible. Rates can be increased up to 200 ppm N after roots become well developed.
Sprays of B-Nine ® WSG at 2,500 ppm can be used to tone growth.
First Year Flowering
Saxifraga x arendsii Saxifraga ALPINO ™ EARLY / TOURAN ™
VERNALIZATION REQUIREMENT
PROP TIME
BOTTOM HEAT
FERTILIZER
YOUNG PLANT COMMENTS
7–9 weeks
70–74 °F (21–23 °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.
The use of tents during propagation to avoid over misting has also been found to be beneficial.
Cold Required
Sedum spurium Stonecrop SPOT ON ™
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 80 ppm N when roots become visible. Rates can be increased up to 150 ppm N after roots become well developed.
First Year Flowering
Sedum telephium Sedum HOT ROCKS ™
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 80 ppm N when roots become visible. Rates can be increased up to 150 ppm N after roots become well developed.
First Year Flowering
GROWER SUCCESS GUIDE 2026–2028
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