Grindelia Species, Hairy Gumweed

Grindeliahirsutula

Family
Asteraceae (ass-ter-AY-see-ee)
Genus
Grindelia (grin-DEL-lee-uh)
Species
hirsutula (her-SOOT-oo-luh)
Synonym
Grindelia acutifolia
Grindelia stricta
Grindelia arenicola
Grindelia blakei
Grindelia bracteosa
Sun Exposure
Full Sun
Foliage
Herbaceous
Succulent
Height
18-24 in. (45-60 cm)
Spacing
6-9 in. (15-22 cm)
9-12 in. (22-30 cm)
Hardiness
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)
USDA Zone 10b: to 1.7 °C (35 °F)
USDA Zone 11: above 4.5 °C (40 °F)
Danger
N/A
Bloom Color
Gold (yellow-orange)
Bloom Time
Late Summer/Early Fall
Other Details
Category
Perennials
Water Requirements
Drought-tolerant; suitable for xeriscaping
Foliage Color
Where to Grow
Bloom Characteristics
This plant is attractive to bees, butterflies and/or birds
Bloom Size
Other details
Soil pH requirements
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
7.9 to 8.5 (alkaline)
Patent Information
Propagation Methods
From seed; direct sow outdoors in fall
From seed; direct sow after last frost
Self-sows freely; deadhead if you do not want volunteer seedlings next season
Seed Collecting
Allow pods to dry on plant; break open to collect seeds
Regional

This plant is said to grow outdoors in the following regions:

Richmond, California

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Gardener's Notes:

1
positive
0
neutral
0
negative
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North Fork, CA (Zone 7b) | August 2010 | positive

When I saw the blooms on Grindelia at the local native plant nursery, I thought it was beautiful and unusual. The centers of the opening...Read More

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