Approximate seed count (raw): 7,400 to 7,600 S./oz. (260 to 270 S./g)

Use a well-drained, disease-free, soilless media with a pH of 5.8 to 6.2 and a medium initial nutrient charge (EC 0.75 mmhos/cm).

Sowing

Sow 1 seed per cell in 288 or larger plug tray. In Europe, 264-cell trays can be used. Covering seed with vermiculite is recommended.

Stage 1 – Germination begins at Day 4 to 5 continuing through Day 14

Soil temperature

• Maximum and fastest germination occurs at 77° F/25°C.

• At 68°F/20°C, maximum germination is achievable; however, it is not as rapid as at 77° F/25°C and requires 3 to 5 additional days to complete Stage 1.

• Slower, less synchronized and more uneven germination is possible at temperatures below 65° F/18°C.

• Temperatures of, or exceeding, 86°F/30°C may lower final germination rates.

Light: Optional.

Moisture: Keep soil wet (level 4) during Stage 1.

Humidity: Maintain 95%+ relative humidity (RH) until radicles emerge.

Plug Production

Stage 2

Soil temperature: 71 to 73°F (21 to 22°C)

Light: Up to 2,500 f.c. (26,900 Lux)

Moisture: Reduce soil moisture slightly (level 3 to 4) to allow the roots to penetrate into the media.

Fertilizer: Apply fertilizer at rate 1 (less than 100 ppm N/less than 0.7 mS/cm EC) from nitrate-form fertilizers with phosphorous.

Stage 3

Soil temperature: 68 to 70°F (20 to 21°C)

Light: Up to 2,500 f.c. (26,900 Lux)

Moisture: Allow media to dry further until the surface becomes light brown (level 2) before watering. Keep the moisture level to wet-dry cycle (moisture level 4 to 2).

Fertilizer: Same as Stage 2.

Growth regulators: Generally not needed

Stage 4

Soil temperature: 65 to 67°F (18 to 19°C)

Light: Up to 5,000 f.c. (53,800 Lux) if temperature can be controlled.

Moisture: Same as Stage 3.

Fertilizer: Same as Stage 2.

Photoperiod

‘Cheyenne Spirit’ is a short day-long day plant. Therefore, best flowering occurs either with short day then long day conditions or a constant 13 to 14 hours daylength. In short day-long day conditions, short day (9 to 10 hours) can be provided either in the large plug/liner stage after 2 true leaves or can be provided posttransplant. The duration of the short day conditions is 6 weeks. In conditions where short days cannot be provided, these are the recommended sow dates:

Latitude lower than N35°: no limits

N36° – N40°: no later than week 9

N41° – N45°: no later than week 8

N46° – N50°: no later than week 7

N51° – N55°: no later than week 6

Growing On to Finish

Container Size

1801 or 304 tray: 1 plug per cell

“Information copied from the breeder.
Muller will not accept any liability for failure and/or damage as a consequence of incorrect and/or inexpert cultivation by or on behalf of the Buyer.”