What it is
Fennel (Foeniculum vulgare) is in the Apiaceae (Carrot) family. Anise-scented, statuesque, and a magnet for swallowtails. Bulbing types give an edible base.
How to grow it
It wants full sun, water it moderate, and give it well-drained soil. Target a soil pH around 6.0–7.0. Space plants about 12 in apart. Expect roughly 80–115. Perennial / grown as annual.
How it's used
Fennel is used: bulb, fronds, seed.
🔎 How to identify it
- Feathery fronds, anise scent
- Yellow umbel flowers
- Hollow ridged stalks
Edibility
How to grow & propagate fennel
Everything I've worked out about starting this one, keeping it alive through a Texas year, and turning one plant into many — free.
How to propagate fennel
The carrot family carries a long taproot and does not want to be moved, so sow it in place. The seed is slow and needs steady moisture to germinate — never let the top of the soil dry out during those first two weeks. Let one plant bolt and flower and it'll hand you next year's seed in those lacy umbels, plus feed every beneficial insect in the yard.
Growing fennel in Texas
Give it full sun and well-drained soil. Match the spot to the plant and most of the battle is already won.
Because it's a perennial, the work is mostly up front. Get it sited and established and it comes back on its own year after year — one of the best returns on effort in the whole garden.
Keep moisture even, especially while it's young — deep, less-frequent soaks build better roots than a daily sprinkle.
Harvesting
Figure on roughly 80–115 before you're harvesting. Pick herbs in the morning after the dew dries for the strongest oils, and harvest little and often — regular cutting keeps a herb bushy and stops it bolting. The part you're after: bulb, leaves, seed.
Making more for free
Every seed we sell is open-pollinated, which means you can save your own from the best plants and it'll grow true next year. Let a few of your strongest plants finish and go to seed, dry it fully, and store it cool and dark. That's the whole point of heirlooms — buy once, grow forever.
Part of the free Texas Roots plant database, compiled by Jordan Polasek from his greenhouse in El Campo, Texas. Free to read and share. If it helped, the best thanks is to grow something.