PERENNIALS | SEED FINISHING
Doronicum orientale Leopard’s Bane LEONARDO ™ COMPACT VERNALIZATION (PRE- OR POST-TRANSPLANT) REQUIREMENT CULTURE REQUIREMENT BULK CROP TIMING TIMING Cold Required 5–7 weeks 6–10 weeks
DAY TEMP
NIGHT TEMP
MEDIA PH / EC
DAY LENGTH
Temperature: 35–45 °F (2–7 °C) Tech tip: Do not allow plant to dry out during the vernalization period or risk losing containers to desiccation.
pH: 5.8–6.2 SME EC: 1.5–2.1 mS/cm PourThru EC: 2.3–3.2 mS/cm
Day neutral
66–68 °F (19–20 °C)
62–64 °F (17–18 °C)
Tech Tips: Allow plant to dry slightly between irrigations but do not allow to wilt as they can be difficult to recover.
Echinacea purpurea Coneflower PRAIRIE SPLENDOR ™ / PRAIRIE SPLENDOR ™ COMPACT / PRAIRIE BLAZE ™ VERNALIZATION (PRE- OR POST-TRANSPLANT) MEDIA PH / EC DAY LENGTH DAY TEMP NIGHT TEMP REQUIREMENT CULTURE REQUIREMENT BULK CROP TIMING 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 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 (PRE- OR POST-TRANSPLANT)
DAY TEMP
NIGHT TEMP
MEDIA PH / EC
DAY LENGTH
REQUIREMENT CULTURE REQUIREMENT BULK CROP TIMING TIMING Cold Beneficial 6–10 weeks
Vernalize for early spring sales. Provide long days for flowering if not vernalizing.
pH: 5.8–6.2 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.
Iberis sempervirens Candy Tuft WHISTLER ™
VERNALIZATION (PRE- OR POST-TRANSPLANT)
DAY TEMP
NIGHT TEMP
MEDIA PH / EC
DAY LENGTH
REQUIREMENT CULTURE REQUIREMENT BULK CROP TIMING 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 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 angustifolia English Lavender SCENT ™
VERNALIZATION (PRE- OR POST-TRANSPLANT)
DAY TEMP
NIGHT TEMP
MEDIA PH / EC
DAY LENGTH
REQUIREMENT CULTURE REQUIREMENT BULK CROP TIMING TIMING First Year Flowering
pH: 5.8–6.2 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 (PRE- OR POST-TRANSPLANT)
DAY TEMP
NIGHT TEMP
MEDIA PH / EC
DAY LENGTH
REQUIREMENT CULTURE REQUIREMENT BULK CROP TIMING 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 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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