Media pH: 5.8–6.2 Media EC: SME EC: 0.9–1.3 mS/cm, PourThru EC: 1.4–2.0 mS/cm Fertilizer: Early fertilization is critical for Nirvana ® XDR to prevent bottom leaf yellowing in propagation, especially for magnesium. Begin fertilization at 100 ppm nitrogen when roots just become visible. Rates can be increased up to 200 ppm nitrogen after roots become well developed. Use primarily Cal-Mag ® Plus (calcium nitrate + magnesium nitrate) fertilizers in propagation to prevent unwanted stretch and provide added magnesium levels. Pinching: Not recommended Plant growth regulators (PGRs): To control growth after rooting, sprays of Altercel ™ (750 ppm), B-Nine ® WSG (2,500 ppm), or Altercel ™ (750 ppm) + B-Nine ® WSG (2,500 ppm) can be used depending on the growth rate and vigor of the plant. The Altercel ™ + B-Nine ® WSG combo spray will have a more growth regulating effect than either the Altercel ™ or B-Nine ® WSG spray alone.
Tech tip: Nirvana ® XDR requires high light and warm temperatures for high-quality plants. Avoid over-watering and cool temperatures during production. With adequate heat and light, one early pinch is all that is needed to produce well-branched plants. Nirvana ® XDRs work well in baskets. Heritage ® or Mural ® sprenches or drenches help prevent fungal basal stem rot after transplant. Moisture level: Media should be allowed to dry between irrigations. Alternate between moisture level 2 and 4. 2 - MEDIUM: Soil is light brown in color, no water can be extracted from soil, and soil will crumble apart. 4 - WET: Soil is dark brown but not shiny, no free water is seen at the surface of the soil, when pressed or squeezed water drips easily, and trays are heavy with a visible bend in the middle. Common pests: Thrips, whiteflies Common diseases: Thielaviopsis , Rhizopus , Rhizotonia , Pythium , Tospovirus (INSV and TSWV), fungal root rot, basal stem rot
Scheduling SIZE
Finishing Temperature
CROP TIME PLANTS PER POT
1.0 pint (4 inch)
6–7 weeks
1 ppp
Day: 76–78 °F (24–26 °C) Night: 70–72 °F (21–22 °C) Average daily temperature: 73–75 °F (23–24 °C) Lighting
1.0 quart (4.5 to 5 inch)
6–7 weeks
1 ppp
1.25 to 2.5 quart (5.5 to 6.5 inch, trade gallon) 3.0 quart to 2.0 gallon (7.5 to 10 inch) 1.5 gallon hanging basket (10 inch basket)
8–10 weeks 1–2 ppp
Day extension lighting: Not necessary Light intensity: 800–1,200 µmol·m -2 ·s -1 Day length response: Day neutral Daily light integral (DLI): 16–18 mol·m -2 ·d -1 If these recommended light levels can’t be met naturally, supplemental lighting is highly recommended to improve finish quality and flower power Transplanting: Transplant directly into the finished container. Place the rooting media slightly below the level of media in the container. Make sure the root ball is covered and that the liner is situated in the center of the pot. Media pH: 5.8–6.2 Media EC: SME EC: 1.5–2.1 mS/cm, PourThru EC: 2.3–3.2 mS/cm Fertilizer: 200–250 ppm N Pinching: Yes, 1 pinch is recommended 7–10 days after transplant. Make sure plants are rooted and established before pinching. Plant growth regulators (PGRs): To control growth after rooting, sprays of Altercel ™ (750 ppm), B-Nine ® WSG (2,500 ppm), or Altercel ™ (750 ppm) + B-Nine ® WSG (1,500–2,500 ppm) can be used depending on the growth rate and vigor of the plant. The Altercel ™ + B-Nine ® WSG combo spray will have a more growth regulating effect than either the Altercel ™ or B-Nine ® WSG spray alone. Sprays of A-Rest ® (2 ppm) or Sumagic ® (0.5 ppm) can also be applied if more growth control is needed. These sprays should be applied before flower development. Bonzi ® sprays are not recommended on vinca because of the chance of black leaf spotting. Bonzi ® drenches should also be avoided because of the chance of severe growth regulation.
9–10 weeks 2–3 ppp
10–11 weeks 4 ppp
Estimated finish crop time is from transplant of a 105-cell tray and finished at an average daily temperature (ADT) of 73 °F (23 °C). Example crop schedule for a 1.25 quart
WEEKS FROM TRANSPLANT
DESCRIPTION
Provide average daily temperatures of 73 °F (23 °C) or higher and DLI levels above 15 mol·m -2 ·d -1 . Pinch plants when they are rooted into the pot. Inspect roots and apply a preventative overhead fungicide drench to the plant/media to prevent fungal root and basal stem rot. Evaluate plants and apply a Altercel ™ (750 ppm) + B-Nine ® WSG (1,500 ppm) spray if needed to maintain mounded growth.
1 week
4 weeks
7 weeks
9 weeks
Finish
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