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key growing information
Growing Snapdragons From Seed
How to grow snapdragons from seed: surface sowing for light, vermiculite cover, pinching for branching, potting up, stem length, cutting stage, soil and uses.
By Hensley’s Seed Co.
Snapdragon - Key Growing Information
DAYS TO GERMINATION:
Allow 7–14 days at 70–75°F (21–24°C).
SOWING:
Transplants are recommended: surface-sow into 128-cell flats or your usual container 8–10 weeks before planting out. The seed needs light to sprout, so cover it only enough to hold it in place; a fine dusting of vermiculite keeps it moist and discourages algae. Pinch if you want branching plants. Water from below or mist lightly so soil doesn't wash over the seed. Move seedlings to cell packs or larger containers once the first true leaves show, about 3–4 weeks after sowing. For bushier plants with more flowering side shoots, pinch young plants back by half when they have 4–6 leaves or are about 3–4" tall. Pinching delays the crop a few weeks; space pinched plants 6–12" apart. Direct sowing isn't recommended.
LIGHT PREFERENCE:
Full sun to partial shade.
PLANT HEIGHT:
Varies.
PLANT SPACING:
Space plants 4–12" apart.
HARDINESS ZONES:
Grown as an annual.
STEM LENGTH:
12–60". Single-stem, one-cut plants can give stems nearly as long as the plant is tall; plants grown for several cuts give stems of 12–36".
VASE LIFE:
About 7–10 days.
STORAGE TEMPERATURE:
32-40°F (0-4°C).
HARVEST:
Cut when the florets on the lowest third to half of the spike are open.
SOIL REQUIREMENTS:
Rich, moist soil with good drainage, ideally near neutral pH.
USES:
Cut flowers and edible flowers.
SCIENTIFIC NAME:
Antirrhinum majus
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