Poison hemlock
Toxic · do not eatHemlock has white umbels and broader divided leaf segments; young plants still need a full key.
Extra care needed
Fennel.
Foeniculum vulgare
Also found as Wild fennel
An aromatic Mediterranean herb with fine foliage and yellow umbels; wild identification needs particular care.
Sources checked 9 September 2026 · Specialist field review pending
Before any gathering or use
Carrot-family mistakes can be fatal. Do not gather an unknown umbellifer by smell.
Where it grows
Tracked records and known growing zone
- Verified records
- 36,638
- People who recorded it
- 16,637
- Most records (northern hemisphere)
- Apr–Aug
- Records span
- 1990–2026
| January | 966 |
|---|---|
| February | 1114 |
| March | 1900 |
| April | 4746 |
| May | 4561 |
| June | 3530 |
| July | 4443 |
| August | 3826 |
| September | 3031 |
| October | 2021 |
| November | 1453 |
| December | 1368 |
| January | 453 |
|---|---|
| February | 338 |
| March | 225 |
| April | 716 |
| May | 288 |
| June | 123 |
| July | 143 |
| August | 156 |
| September | 281 |
| October | 323 |
| November | 323 |
| December | 310 |
Research-grade iNaturalist records, snapshot Aug 27, 2026. The growing zone combines areas where different people have repeatedly verified it. Records show where people looked and found it, not current abundance or permission to gather.
01 / Learn to see
Field marks
- 01
Very finely divided, threadlike leaves.
- 02
Yellow flowers in large compound umbels.
- 03
Tall branching herb; aromatic foliage is supporting evidence only.
These are study prompts, not a complete identification key. Confirm the full plant with a regional flora and an experienced local identifier.
02 / Resolve the differences
Look closely. Compare.
Water hemlock
Toxic · do not eatA deadly wetland plant; habitat alone cannot exclude it.
Selected comparisons only. Other lookalikes may occur locally.
03 / Meet the place
Habitat & season
Range context
Mediterranean origin; naturalized around the world, sometimes invasive.
Watch the plant stage
Confirm mature flowering plants; leafy growth and fully mature seeds are different collection stages.
Stage guidance is not a local forecast. Check your climate, elevation and a regional source; no month-shift formula is used here.
04 / Gather with care
Documented use & care
Parts discussed: Leaf · Seed
Prefer a correctly named garden plant for culinary leaves and seeds.
Care for the patch
Prevent seed spread where fennel is invasive. Never strip wild stands.
Preparation & storage essentials05 / Follow the evidence
Sources & review
- NC State Extension · Foeniculum vulgareBotanical description, range and documented use
Checked 9 September 2026. Original editorial synthesis; source institutions have not reviewed or endorsed this guide. Independent botanical field review is pending. Photos illustrate specimens; they do not certify the identity of a plant you find.
Suggest a correction