Photo by Annie's Annuals & Perennials
Used with permission, all rights reserved.
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
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.
By: Annie's Annuals & Perennials
Garden photo gallery of Ferula communis ssp. glauca
Gardening facts about Ferula communis ssp. glauca plant
How to Grow Ferula communis ssp. glauca
Sun Exposure
- sun
Water Needs
- regular
Soil Needs
- average
- well-drained
Features
Foliage Color
- green
- blue
Flower Color
- yellow
Wildlife
- bees
- butterflies
Flower Season
- spring
- summer
Foliage Season
- deciduous
Landscape groups by tags
See other plant types of Ferula for your garden
aka Giant Fennel
Plant Type
Perennial
Zones
7a-9b
Size
Height: 6'-8'
Width: 3'
- sun
- drought tolerant
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Plant Type
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Zones
4a-10b
Size
Height: 3'-5'
Width: 18"-24"
- sun - mostly sun
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