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PlantFiles: Bigflower Agoseris
Agoseris grandiflora

 
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Family: Asteraceae (ass-ter-AY-see-ee) (Info)
Genus: Agoseris (a-go-SER-iss) (Info)
Species: grandiflora (gran-dih-FLOR-uh) (Info)

Category:
Perennials

Height:
6-12 in. (15-30 cm)
12-18 in. (30-45 cm)

Spacing:
3-6 in. (7-15 cm)
6-9 in. (15-22 cm)

Hardiness:
USDA Zone 7a: to -17.7 °C (0 °F)
USDA Zone 7b: to -14.9 °C (5 °F)
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)
USDA Zone 10a: to -1.1 °C (30 °F)

Sun Exposure:
Full Sun

Danger:
Unknown - Tell us

Bloom Color:
Pale Yellow

Bloom Time:
Late Spring/Early Summer
Mid Summer
Late Summer/Early Fall

Foliage:
Herbaceous

Other details:
This plant is attractive to bees, butterflies and/or birds
Drought-tolerant; suitable for xeriscaping
Average Water Needs; Water regularly; do not overwater
Self-sows freely; deadhead if you do not want volunteer seedlings next season

Soil pH requirements:
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)

Patent Information:
Unknown - Tell us

Propagation Methods:
From seed; direct sow after last frost

Seed Collecting:
Allow seedheads to dry on plants; remove and collect seeds

Click thumbnail
to view:

By Kelli
Thumbnail #1 of Agoseris grandiflora by Kelli

By Kelli
Thumbnail #2 of Agoseris grandiflora by Kelli

By Kelli
Thumbnail #3 of Agoseris grandiflora by Kelli

Profile:

No positives
1 neutral
No negatives

Gardeners' Notes:

RatingAuthorComment
Neutral htop On Feb 4, 2005, htop from San Antonio, TX (Zone 8b) wrote:

I have not grown this plant. Common names include: Mountain dandelion, Large-flowered Agoseris and California Dandelion. It naturally ranges from British Columbia south to California and east to Idaho, Nevada and Utah. The yellow flower heads are large and frequently do not fully open.

Regional...

This plant has been said to grow in the following regions:

Malibu, California



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