Plant growth regulators (PGRs): To control growth after rooting, a spray of B-Nine ® WSG (3,500–4,000 ppm) can be used. Sprays of Configure ® (150–300 ppm) or Atrimmec ® (200 ppm) can also be used to improve branching on the young rooted plants. These Configure ® or Atrimmec ® sprays should be applied to actively growing plants and done ideally 5–7 days before pinching. Do not spray B-Nine ® WSG, Configure ® , or Atrimmec ® on stressed or weak cuttings. For all sprays listed above, the mist should be off for a minimum of one hour for the PGR to absorb into the leaf tissue.
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: Aphids, Whiteflies, Thrips, Mealybugs, Spider Mites Common diseases: Cercospora and Corynespora fungal leaf spot, Fungal root, Basal stem rot
Finishing
Scheduling
Temperature Day: 76–78 °F (24–26 °C) Night: 70–72 °F (21–22 °C) Average daily temperature: 73–75 °F (23–24 °C) Lighting Day extension lighting: Beneficial Light intensity: 4,000–6,000 foot candles (800–1,200 µmol·m -2 ·s -1 )
PLANTS PER POT
SIZE
CROP TIME
Large Packs
6–7 weeks
1 ppp
1.0 pint ( 4 inch )
6–7 weeks
1 ppp
1.0 quart (4.5 to 5 inch)
7–8 weeks
1 ppp
Day length response: Facultative long day Daily light integral (DLI): 16–18 mol·m -2 ·d -1
1.25 to 2.5 quart (5.5 to 6.5 inch, trade gallon) 1.5 gallon hanging basket (10 inch basket)
8–9 weeks
3 ppp
Transplanting: Transplant directly into the finished container. Place the rooting media slightly below the level of media in the container. Make sure that the root ball is covered and that the cutting 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 14–17 days after transplant. Plant growth regulators (PGRs): Sprays of Configure ® (300 ppm) or Atrimmec ® (200–400 ppm) applied early after transplant can be used to improve branching. No other PGRs are required to control growth due to their petite habit. Tech tip: Madinia Petite Dipladenia have a controlled growth habit and was bred for improved branching and early flowering. They make very nice quart products. An early pinch (either in propagation or shortly after transplant) will encourage branching. High light and warm temperatures will improve quality and help reduce crop times.
10–11 weeks
5 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 1.0 quart
WEEKS FROM TRANSPLANT
DESCRIPTION
Provide ADT of 73 °F (23 °C) or higher and DLI levels above 15 mol·m -2 ·d -1 Apply a spray of Configure ® (300 ppm) to improve branching. Pinch plants when they are well rooted into the container. Begin scouting regularly for pests
1 week
2 weeks
8 weeks
Finish
Madinia ® Petite Red
Try Chrysal Alesco ® , a postharvest foliar spray, to protect ethylene sensitive crops during shipping and retail.
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