2024 Grower Success Guide | Americas

Natural Photoperiod by Latitude For the best quality plants, provide day-extension or night interruption lighting from Sept. 15 to April 1.

17

VANCOUVER, B.C.

16

MINNEAPOLIS, MN

15

COLUMBUS, OH

Latitude (°N)

14

CHARLOTTE, NC

25 30 35 40 45 50

13

HOUSTON, TX

12

MIAMI, FL

11

10

9

PROVIDE LONG-DAY LIGHTING

PROVIDE LONG-DAY LIGHTING

8

1/1 2/1 3/4 4/4 5/5 6/5 7/6 8/6 9/6 10/7 11/7 12/8 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Date

Sanguna ® Banana Candy Petunia Container: 1.42 L (6” pot) Average Daily Temperature: 67.7 °F (19.9 °C) DLI: 8.1 mols/day

FINISH PHOTOPERIOD

9.5 hrs

10.5 hrs

11.5 hrs

13.5 hrs

WEEKS TO FLOWER

7

7.5

5.5

5.5

FLOWER NO. DECREASE VERSUS LONG DAYS

-80%

-88%

0%

Photo taken 7.0 weeks after transplant. Flower count data taken 7.0 weeks after transplant. = Miminum Photoperiod Recommendation Our MPR recommendations assume a daily light integral (DLI) of 10-15 mols·m -2 ·d -1

GROWER SUCCESS GUIDE 2024–2025

135

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