bronze fennel
Foeniculum vulgare

Hardiness: Zones 4 to 9
Plant type: Herbaceous perennial
Height: 4- 6'
Spread: 1.5- 3'
Sun: Full sun
Water: Medium
Bloom time: June, July
Bloom color: Yellow
Soil: Well-draining, organically rich soil

Notes: Flowers are very attractive to butterflies. Fennel is a larval plant for certain swallowtail butterflies.

More information on Foeniculum vulgare here.