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key growing information
Verbena Flower Growing Information
How to grow Verbena bonariensis from seed: breaking dormancy with day-night temperature swings, transplants, keeping seed dry, direct sowing, cutting stage, soil and uses.
By Hensley’s Seed Co.
Verbena - Key Growing Information
DAYS TO GERMINATION:
Allow 14–28 days at 60–86°F (16–30°C); alternating cool 60°F (16°C) nights with warm 86°F (30°C) days helps break dormancy.
SOWING:
Transplants are recommended: sow 8–12 weeks before planting out, covering the seed lightly. It's slow to sprout and dislikes excess moisture, so keep the mix on the dry side until seedlings appear. Sow in place only where the growing season is long, after the last frost, barely covering the seed.
LIGHT PREFERENCE:
Full sun.
PLANT HEIGHT:
Grows about 36–48" tall.
PLANT SPACING:
Space plants 18–24" apart.
HARDINESS ZONES:
Hardy in Zones 7–10.
HARVEST:
For fresh use, cut when the outer 2–4 rings of flowers are open.
SOIL REQUIREMENTS:
Grows in most soils.
USES:
Fresh cut flowers, pollinator plantings, borders, beds, containers and mass plantings. Deer usually leave it alone.
NOTES:
Typically self-sows freely.
SCIENTIFIC NAME:
Verbena bonariensis
ALTERNATE NAMES:
Purple-top verbena, tall verbena, South American vervain.
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