Alameda County Thistle (Cirsium Quercetorum) is a annual, perennial herb in the Asteraceae family with moderate care difficulty. It requires low watering and full sun light in USDA hardiness zones 8-10. This plant is safe for cats and dogs.

Cirsium quercetorum is a thistle species endemic to California, recognized for its spiny foliage and native habitat in oak woodlands and grasslands.

Alameda County Thistle

Alameda County Thistle

Cirsium Quercetorum

Cirsium quercetorum is a thistle species endemic to California, recognized for its spiny foliage and native habitat in oak woodlands and grasslands.

Quick Facts

Type
herb
Lifecycle
annual, perennial
Care Difficulty
Moderate
Water Needs
Low
Light
Full Sun
Hardiness Zones
8-10

Safety

🐕
Pet Safe
👶
Child Safe
Non-Toxic

Growing Conditions

Soil Types:loamy, sandy, rocky
Indoor:No
Outdoor:Yes
Garden Use:pollinator support, native plant restoration

Care Calendar

Monthly care tasks for Alameda County Thistle

Jan
Prune
Feb
Fertilize
Mar
Repot
Apr
Water+
May
...
Jun
...
Jul
...
Aug
...
Sep
...
Oct
...
Nov
...
Dec
...

Expert Care Tips

Pro tips from botanists and plant experts

Watering Tip

Check soil moisture by inserting your finger 1 inch deep. Water only when the top layer feels dry to prevent overwatering.

Humidity Trick

Group plants together to create...

Growth Hack

Rotate your plant every...

Photo Gallery10+ photos

Alameda County Thistle
Alameda County Thistle detail

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Taxonomy

Family:Asteraceae
Genus:Cirsium