ZINNIA ZAHARA DOUBLE FIRE DOUBLE

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ZINNIA ZAHARA DOUBLE FIRE DOUBLE

Availability: In stock

The only true double zinnia series on the market, Double Zahara makes bigger, fully double flowers than the competition for more colour show, bigger retail impact and greater sellthrough. This award-winning series offers all the same great traits as its popular single Zahara counterparts: outstanding disease tolerance, low water needs, and superior all-season performance in beds and planters. Satisfied shoppers will be back for more!
€0.040 each
Tier Prices
  • Buy 500 seeds for €0.040 each
  • Buy 1000 seeds for €0.035 each
  • Buy 5000 seeds for €0.032 each

ZINNIA ZAHARA DOUBLE FIRE DOUBLE is available for purchase in increments of 500 seeds.

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Description

Details

GrowerFacts

Zinnia Double Zahara (Zinnia marylandica)


Germination

Approximate seed count: 10,000 to 17,000 S./oz. (350 to 600 S./g)


Media
Use a well-drained, disease-free media with a pH range of 5.8 to 6.2, and EC less than 0.75mmhos/cm (2:1 extraction).


Sowing
Plug Tray Size: Can be produced in 288, 200 or similar cell size plug trays. Cover the seed with a medium
layer of vermiculite at sowing.


Germination takes approximately 2 to 3 days
Germination temperature: 68 to 73°F (20 to 22°C)

Light: Light is not required for germination.

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

Relative humidity: Maintain 95 to 97% relative humidity (RH) until cotyledons emerge.

Plug Production

Media
Use a well-drained, disease-free media with a pH range of 5.8 to 6.2, and EC less than 0.75mmhos/cm (2:1 extraction).


Sowing
Plug Tray Size: Can be produced in 288, 200 or similar cell size plug trays. Cover the seed with a medium
layer of vermiculite at sowing.


Stage 1 – Germination takes approximately 2 to 3 days

Germination temperature: 68 to 73°F (20 to 22°C) Light: Light is not required for germination. Moisture: Keep the soil wet (level 4) during Stage 1
Relative humidity: Maintain 95 to 97% relative humidity (RH) until cotyledons emerge.

Stage 2

Temperature: 68 to 76°F (20 to 24°C) days; 59 to 64° F (15 to 17°C) nights

Light: Can be up to 2,500 f.c. (26,900 Lux) during
Stages 2 and 3.

Media Moisture: Keep the media medium (level 3) to medium wet (level 4).

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


Stage 3
Temperature: 68 to 76°F (20 to 24°C) days; 59 to 64° F (15 to 17°C) nights.

Media Moisture: Keep the media medium wet (level
3) during Stages 3 and 4.

Fertilizer: Increase the fertilizer rate to 2 (100 to 175 ppm N/0.7 to 1.2 mS/cm EC). Maintain a media pH of
5.8 to 6.2 and EC at 0.7 to 1.0 mS/cm (1:2 extraction).


Stage 4
Temperature: 65 to 70°F (18 to 21°C) days; 59 to 64° F (15 to 17°C) nights

Light: Light levels can be up to 5,000 f.c. (53,800 Lux)
if optimal temperatures can be maintained.

Fertilizer: Same as Stage 3.


Plant Growth Regulators
PGRs are generally not required during plug production. If needed, plants can be treated once during the plug stage at about 10 to 14 days after sowing with a foliar spray of B-Nine/Alar (daminozide) at 1,250 to 2,500 ppm (1.5 to 3.0 g/l 85% formulation or 2.0 to 3.9 g/l of 64% formulation).

Growing On to Finish

Container Size
Double Zahara can be produced in 4-in. (10-cm), quarts, Gallon (18-cm) pots or similar size containers.
Media
Use a well-drained, disease-free media with a pH of
5.8 to 6.2 and a medium initial nutrient charge.


Temperature
Night: 59 to 64°F (15 to 17°C)

Day: 65 to 70°F (18 to 21°C)


Light
Keep light levels as high as possible while maintaining appropriate temperatures. Flowers will be more double with intense color under high light levels.


Fertilizer
Starting 1 week after transplant, apply fertilizer at rate
3 (175 to 225 ppm N/1.2 to 1.5 mS/cm) using predominantly nitrate-form fertilizer with low phosphorus. If needed, alternate with a balanced ammonium and nitrate-form fertilizer to encourage growth and balance the media pH. Maintain the media EC at 1.50 to 2.00 mS/cm and pH at 5.8 to 6.2. Avoid fertilizer/nutritional stress during production as this can cause the flowers to be less double.


Irrigation
Maintain optimal media moisture (not too wet or too dry). Avoid overhead irrigation. Irrigation should take place during times when foliage will dry quickly, to prevent any disease incidence.


Plant Growth Regulators
B-Nine/Alar (daminozide) at 3,500 to 5,000 ppm (4.1 to
6.0 g/l of 85% formulation or 5.5 to 7.8 g/l of 64% formulation) applied twice as a foliar spray will help in controlling the plant growth. First application can be done 1 week after transplant, followed by a second application 7 to 10 days later.


Northwestern Europe: Zahara will require less PGRs under northwestern European conditions. Can use 2 applications of B-Nine/Alar (daminozide) at 1,600 ppm (1.9 g/l 85% formulation or 2.5 g/l of 64% formulation).


Crop Scheduling
Sow to transplant: Approximately 3 weeks

Transplant to flower:
8 to 9 weeks in Spring,
5 to 6 weeks in Summer
Total crop time (sow to flower):
11 to 12 weeks in Spring
8 to 9 weeks in Summer
It may take an additional 1 week to finish in Gallon size containers.


Common Problems
Insects: Monitor for Aphids early in production, and
Thrips during flowering.

Disease: Avoid high humidity and condensation in the greenhouse, as these conditions are favorable for Botrytis and Powdery Mildew incidence.

“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.”