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key growing information
How to Grow Strawflowers From Seed
How to grow strawflowers from seed: light for germination, transplants, pinching and support, height, harvest stage and avoiding overmature blooms, soil and uses.
By Hensley’s Seed Co.
Strawflower - Key Growing Information
DAYS TO GERMINATION:
Allow 7–10 days at 70–75°F (21–24°C).
SOWING:
Transplants are recommended: sow into 72-cell flats or your usual containers 4–6 weeks before planting out, leaving the seed uncovered since it needs light to sprout. Water from below or mist so it stays uncovered. Harden off and plant out once frost danger is past. Direct sowing works only where summers are long. Established plants like well-drained soil and temperatures of 70–75°F (21–24°C). Pinch to encourage even, productive branching; plants may need support.
LIGHT PREFERENCE:
Full sun.
PLANT HEIGHT:
36–40"; may need some support.
PLANT SPACING:
Space plants 10–12" apart.
HARDINESS ZONES:
Grown as an annual.
STEM LENGTH:
12-20".
VASE LIFE:
About 7–10 days.
STORAGE TEMPERATURE:
70-75°F (21-24°C).
HARVEST:
Keep cutting or deadheading for the best yields. For fresh or dried use, cut when 2–3 layers of petals have unfurled but before the flower opens fully to show its center. Watch out: blooms that are past their prime close up at night and on dull, overcast days, so they can look like they're at the right stage when they're actually overmature. To avoid being fooled, cut on bright mornings, or leave cut stems in the light for a few hours so overmature blooms reopen and can be sorted out. This matters most for drying, since flowers keep opening as they dry, and overmature ones shatter and discolor once dried.
SOIL REQUIREMENTS:
Average soil with good drainage.
USES:
A superb dried flower for borders and the back of beds.SCIENTIFIC NAME: Helichrysum bracteatum
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