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Helianthus annuus


Item no. N0311
  • Benary’s first pollen-free cut sunflower
  • SOLARA's dark pollen-free center is surrounded by a dense array of rich golden yellow petals forming large 6" (15 cm) flowers
  • Longer lasting in the vase, SOLARA gives added enjoyment in the home
  • Pollen-free, SOLARA is no mess and non staining
  • The pollenless habit adds the extra benefit of less weighty flowers that face upward
  • Easy to grow, SOLARA can be direct sown or transplanted from large plugs
  • With high germination and uniform flowering, SOLARA makes an easy crop from sowing through harvest
  • Early flowering, SOLARA reduces production costs and means even greater profits for growers
  • SOLARAs long, non branching stems bring top market prices
  • In bouquets, combine SOLARA with Scabiosa Fama®, Eryngium Blue GLITTER or any of Benary’s asters for attractive bouquets
  • Annual

  • 10-12 weeks

  • 59″ / 150 cm

  • Sun

  • Raw

  • Cutflowers

Remember Recommend

Culture guide

  • Uses: Plants for bedding, cut flower production
  • Exposure: Sun
  • Garden height: 59″ / 150 cm
  • Crop time: 10-12 weeks
  • Sow time: Indoor forcing: March-August, sowing in intervals; Outdoor forcing: April-Mid July
  • Sowing method: 1-2 seeds per plug, sowing directly into field is recommended
  • Germination*: 5 days at 65-75 °F (18-24 °C). Cover seed lightly with coarse vermiculite. Supplemental lighting during plug germination improves quality. Direct sow seed for longest stem length
  • Growing On: Direct sow or transplant at two true leaf stage. Space seed or seedlings at 5 x 5" (12x12 cm). Begin fertilizing at 100 ppm nitrogen after transplanting. Increase fertilization to 200-250 ppm nitrogen in a well-balanced mix after three weeks.
    Maintain temperatures above 68-72 °F (20-22 °C) for improved stem length and flower quality. Fertilize weekly at 200-250 ppm nitrogen. Do not allow plant to become dry as leaf scorch can occur. Late day watering can also contribute to foliage disorders.
  • Media: Field: Before sowing treat substrate with herbicide or fight the weeds mechanically and fertilize the field. Greenhouse: Use a well-drained, growing substrate with 15-30 % clay, 1-3 kg/m2 complete balanced fertilizer, 0-2 kg/m² slow release fertilizer
    (3-6 months), Fe-chelate, micronutrients, pH: 5.5-6.2.
  • Temperature: Field: cultivation is possible from April onwards. Grow at 15-18 °C. Cultivate flowering plants not below 12 °C. Helianthus plants do not tolerate frost.
  • Fertilization: Field: N min soil value: approximately 150 g/m². Greenhouse: High fertilization levels are required.
* Germination Stages (from seed to finished young plant)

Stage I Starts with the radicle breaking through the testa. The roots are touching the medium. Ends with fully developed cotyledons.
Stage II Starts from fully developed cotyledons. Ends with the fully developed true leaf or true leaf pair.
Stage III Starts from the fully developed true leaf or true leaf pair and ends with 80% of the young plants being marketable.
Stage IV All young plants are ready for sale and in the process of being hardened off. This stage lasts about 7 days.

The cultural recommendations are based on results from trials conducted under Central European conditions. Different conditions in other parts of the world may lead to deviations in results achieved.

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