PERENNIALS | SEED FINISHING
Echinacea purpurea Coneflower PRAIRIE SPLENDOR ™ / PRAIRIE SPLENDOR ™ COMPACT / PRAIRIE BLAZE ™ VERNALIZATION MEDIA PH / EC DAY LENGTH DAY TEMP NIGHT TEMP REQUIREMENT CULTURE REQUIREMENT BULK CROP TIMING CROP TIMING First Year Flowering First–year flowering perennial. Will flower earlier and produce more branches if vernalized. 6–10 weeks pH: 5.8–6.2 EC: SME EC: 1.5–2.1 mS/cm PourThru EC: 2.3–3.2 mS/cm Obligate long day 74–76 °F (23–24 °C) 64–66 °F (18–19 °C)
Tech Tips: While a first year flowering perennial, if grown at 40–50 °F (5–10 °C) for 6–10 weeks the plant will produce more branches and flower earlier.
Erysimum hybridum Wallflower CANARIES ™ VERNALIZATION
DAY TEMP
NIGHT TEMP
MEDIA PH / EC
DAY LENGTH
REQUIREMENT CULTURE REQUIREMENT BULK CROP TIMING CROP TIMING Cold Beneficial 6–10 weeks
Vernalize for early spring sales. Provide long days for flowering if not vernalizing
pH: 5.8–6.2 EC: SME EC: 0.9–1.3 mS/cm PourThru EC: 1.4–2.0 mS/cm
Day neutral
66–68 °F (19–20 °C)
62–64 °F (17–18 °C)
Tech Tips: A cold period of 6–10 weeks at 40–50 °F (5–10 °C) will produce a more branched habit, and earlier more uniform flowering. If no chilling is provided, a day length of >14 hours will be needed to initiate flowering
Heuchera americana Coral Bells MARVELOUS MARBLE ™ VERNALIZATION
DAY TEMP
NIGHT TEMP
MEDIA PH / EC
DAY LENGTH
REQUIREMENT CULTURE REQUIREMENT BULK CROP TIMING CROP TIMING First Year Flowering
pH: 5.8–6.2 EC: SME EC: 1.5–2.1 mS/cm PourThru EC: 2.3–3.2 mS/cm
Facultative long day 65–75° F (18–24° C)
55–65° F (13–18° C)
Tech Tips: Interesting foliage color and pattern. In colder temperatures, foliage will be more purple, as temperatures increase leaves will show silver marble pattern. Sold for foliage.
Hibiscus moscheutos Swamp Rose Mallow HONEYMOON ™ VERNALIZATION
DAY TEMP
NIGHT TEMP
MEDIA PH / EC
DAY LENGTH
REQUIREMENT CULTURE REQUIREMENT BULK CROP TIMING CROP TIMING First Year Flowering
pH: 6.1–6.5 EC: SME EC: 1.5–2.1 mS/cm PourThru EC: 2.3–3.2 mS/cm
Obligate long day
76–78 °F (24–26 °C)
68–70 °F (20–21 °C)
Tech Tips: Avoid drying the media too much since this can cause premature flower bud abortion. Grow under high light levels for top quality. Leaves may show chlorosis if plants are grown too cool.
Iberis sempervirens Candy Tuft WHISTLER ™ VERNALIZATION
DAY TEMP
NIGHT TEMP
MEDIA PH / EC
DAY LENGTH
REQUIREMENT CULTURE REQUIREMENT BULK CROP TIMING CROP TIMING Cold Required 7–10 weeks 8–10 weeks
Temperature: 35–45 °F (2–7 °C) Tech tip: Pinch at transplant in the fall to ensure pot fill prior to vernalization period.
pH: 5.8–6.2 EC: SME EC: 1.5–2.1 mS/cm PourThru EC: 2.3–3.2 mS/cm
Day neutral
64–66 °F (18–19 °C)
56–58 °F (13–14 °C)
Tech Tips: One pinch is recommended either in propagation or 7–10 days after transplant.
Lavandula angustifola English Lavender SCENT ™ VERNALIZATION
DAY TEMP
NIGHT TEMP
MEDIA PH / EC
DAY LENGTH
REQUIREMENT CULTURE REQUIREMENT BULK CROP TIMING CROP TIMING First Year Flowering
pH: 5.8–6.2 EC: SME EC: 1.5–2.1 mS/cm PourThru EC: 2.3–3.2 mS/cm
Facultative long day 72–74 °F (22–23 °C)
62–64 °F (17–18 °C)
Tech Tips: If applicable pinch 14 days after transplant.
Lavandula stoechas Spanish Lavender CASTILLIANO 2.0 ™ VERNALIZATION
DAY TEMP
NIGHT TEMP
MEDIA PH / EC
DAY LENGTH
REQUIREMENT CULTURE REQUIREMENT BULK CROP TIMING CROP TIMING First Year Flowering A short cold treatment for 3–4 weeks at 50–55 °F (10–13 °C) average daily temperature is recommended to increase flowering uniformity. Bulk plants after transplanting prior to cooling period for best plant fill and habit. 3–4 weeks
pH: 5.5–5.9 EC: SME EC: 0.9–1.3 mS/cm PourThru EC: 1.4–2.0 mS/cm
Facultative long day 66–68 °F (19–20 °C)
60–62 °F (16–17 °C)
Tech Tips: A short cold treatment for 3–4 weeks at 50–55 °F (10–13 °C) average daily temperature is recommended to increase flowering uniformity. Bulk plants after transplanting prior to cooling period for best plant fill and habit.
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