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key growing information
Growing Nasturtium From Seed
How to grow nasturtiums from seed: germination, direct sowing or transplants, support for trailing types, spacing, harvest of edible flowers and leaves, soil and uses.
By Hensley’s Seed Co.
Nasturtium - Key Growing Information
DAYS TO GERMINATION:
Seedlings appear in 7–14 days at 60–65°F (16–18°C).
SOWING:
Sowing in place is recommended, ½–1" deep. For transplants, sow 3–4 weeks before planting out, and cover the seed, since it needs darkness to germinate.
LIGHT PREFERENCE:
Full sun to partial shade.
PLANT HEIGHT:
Depends on the variety; climbing and trailing types need a trellis or other support.
PLANT SPACING:
8–12" apart; for hanging baskets or 10" pots, thin to 3–5 plants.
HARDINESS ZONES:
Grown as an annual.
HARVEST:
Pick edible flowers fully open; leaves can be picked any time.
SOIL REQUIREMENTS:
Well-drained soil that isn't too rich, as high nitrogen gives more leaves than flowers.
USES:
A bedding plant that shines in containers and hanging baskets. Flowers, leaves and seed pods are all edible.
SCIENTIFIC NAME:
Tropaeolum spp.
ALTERNATE NAMES:
Garden nasturtium, Indian cress.
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