Ferula communis ssp. glauca

Also Known As

Ferula communis 'Glauca'
Ferula communis f. glauca
Ferula communis subsp. glauca
Ferula glauca
Giant Fennel

Plant type

perennial, annual / biennial

size

H: 6'-8'
W: 3'-4'

planting zones

7a-10b

More Options

Ferula communis ssp. glauca plant details

Ferula communis ssp. glauca is a broadleaf deciduous annual / biennial or perennial with blue and green foliage. In spring and summer yellow flowers emerge. Attracts bees and butterflies making it an excellent addition to pollinator gardens. Grows well with sun and regular water. Does well in average and well-drained soil.

CHARACTERISTICS OF Ferula communis ssp. glauca

Plant type: annual / biennial or perennial
Plant family: apiaceae
Foliage: deciduous blue and green
Mature size: 3 FT - 4 FT - wide, 6 FT - 8 FT - tall
Flowers: yellow blooms in spring and summer
Uses: fragrant, self-sowing, tropical-looking

GROWING CONDITIONS for Ferula communis ssp. glauca

USDA Zones: 7a - 10b
Sun exposure: sun
Watering frequency: regular

Soil needs: average and well-drained

Nursery contributed plant descriptions

An awesome umbellifer, this Giant Fennel has the most softly textural foliage on a fairly grand scale. But what is really cool is when this is old enough to flower it throws a flower stalk up to 14' tall with heads of small yellow flowers. Most common question: "What the heck is that?"

By: Far Reaches Farm

A giant fennel from the Mediterranean that reaches 4-6 ft tall in its early years, displaying its lacy, fern-like leaves, silvery blue on white stems. When mature, in 2 or several years, plants bloom and reach further upward, producing stunning yellow flowers in umbels 1 ft or more across on branched stems that rise above the foliage to 10-12 ft! Ooo... Then, being monocarpic, the mother plant dies, having produced seeds for more giants and more fun. Requires well-drained soil and summer sun. Goes dormant in summer dryness and reappears with the rain. Frost hardy to 0F, USDA zone 7.

By: Cistus Nursery

One of the most remarkable perennials you can grow, Ferula glauca provides a spectacular & dynamic presence in the garden. The tall, thick stems rise to 8’ tall above a mound of shiny, filigreed foliage topped by huge, amazing, boat-shaped buds. These soon unfold to reveal very large, dense globes of golden flowers on multi-branching stems. A fabulous architectural specimen and, when it blooms, which will probably be in its second year, you’ll be running for the camera! Dies after blooming, but hopefully will reseed. Easy as pie to grow, just make sure it has good drainage. (NO CLAY). Swallowtail host plant.