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key growing information
Growing Fennel Bulb From Seed
How to grow bulb fennel (finocchio) from seed: soil and water, timing to avoid bolting, transplants or direct sowing, harvest and storage.
By Hensley’s Seed Co.
Fennel - Key Growing Information
SCIENTIFIC NAME:
Foeniculum vulgare
CULTURE:
Bulb fennel (finocchio) wants fertile, well-drained soil rich in organic matter, with a pH of 6.5–7.5, and enough water for good yield and flavor. Whenever you can, time plantings to mature as days shorten and temperatures cool, because heat and long days push plants to bolt.DAYS TO MATURITY: Counted from direct sowing.
TRANSPLANTING:
Use 1–2" cell-type containers, 3 seeds per cell, ¼" deep, thinning to one plant. Grow for 4–6 weeks, or until plants slip out without disturbing the roots. Plant out from mid-spring to late summer, 6" apart, handling carefully since root disturbance can trigger bolting. Snip off any flower stalks that appear.DIRECT SEEDING: From mid-spring to early summer, plant ¼" deep at 10 seeds per foot in rows 18" apart, thinning to 6".
AVG. DIRECT SEEDING RATE:
About 1,000 seeds per 100', 5,000 per 500', and 1 oz. per 700'.
HARVEST:
Once the base has swollen, cut the bulb free just above the taproot with sharp pruners. Trim the stalks to 1–2" above the bulb for sale or storage.
STORAGE:
Store at 32°F (0°C) and 95% relative humidity.
TRANSPLANTS (AVG.):
4,000 plants/oz. SEEDS/OZ. (AVG.): 6,500.
PACKET:
200 seeds per packet, enough for about 20'.
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