Thistle Sage
ExplorePlants
Thistle Sage
salvia carduacea
Thistle Sage (Salvia carduacea) is a striking annual wildflower native to the arid regions of California and Baja California. Despite its prickles and formidable thistle-like appearance, it belongs to the fragrant mint family (Lamiaceae). This resilient plant produces highly distinctive, bright lavender-to-purple flowers that feature beautifully fringed lower lips and contrasting bright red-orange anthers. Growing in sandy patches, washes, and dry fields, it is a hallmark of spring in the Mojave Desert and chaparral ecosystems. It has evolved to thrive in drought-prone environments, bursting into bloom during early spring and setting seeds before the extreme summer heat arrives. Indigenous peoples historically used its nutritious seeds for food and medicinal teas, highlighting its ecological and cultural value.
Habitat: Found in dry, sandy or gravelly soils, desert washes, and open chaparral flats of California and Baja California.
Appearance
Thistle Sage is easily recognized by its cobwebby, woolly stems and spiny, thistle-like basal leaves that are deeply lobed with white-margined teeth. The plant grows to a height of 15 to 100 cm, producing dense, ball-like whorls of pale purple or lavender flowers. Each flower exhibits a deeply fringed, fan-shaped lower lip and a pair of prominent, bright orange-red anthers that contrast sharply with the soft purple petals. The entire plant has a gray-green, woolly coating that helps conserve moisture, giving it a soft, dusty appearance from a distance.
KingdomPlantaePhylumTracheophytaClassMagnoliopsidaOrderLamialesFamilyLamiaceaeGenusSalvia
Category
PlantsRarity
Common
Danger
1/5 · Very low
Snaps
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Interesting facts
Despite looking like a hostile thistle, it is actually a true sage and member of the fragrant mint family.
Its stunning, bright orange-red anthers contrast sharply with its purple petals to create a highly visible target for native bees.
The seeds of Thistle Sage were traditionally harvested by the Kawaiisu and other California Indigenous groups, who parched and ground them into a nutritious meal.
Special abilities
Ability
Drought Resistant Wool
The plant is covered in dense, white, cobwebby hairs that reduce water loss by deflecting harsh desert sunlight and trapping a micro-layer of humid air.
Ability
Spiny Protection
Its thistle-like, spiny leaves deter herbivores from grazing on its foliage in resource-scarce desert environments.
Ability
Pollinator Trapdoor
The specialized lower lip of the lavender flower acts as a landing platform, flexing under the weight of bees to precisely dust them with pollen from its red anthers.
Measurements & details
- Length
- 15-100 cm
- Weight
- 0.05-0.3 kg
- Lifespan
- 1 years
- Incubation
- 14-28 days
Diet & Feeding
As a photosynthetic plant, Thistle Sage manufactures its own energy from sunlight, carbon dioxide, and water while absorbing essential mineral nutrients from the soil.
Primary Foods
- Sunlight
- Water
- Carbon dioxide
- Soil nitrogen
- Phosphorus
Ecological connections
mutualism
Yellow-faced Bumblebee
Bombus vosnesenskii
Serves as a primary pollinator, attracted to the bright lavender flowers and rich nectar.
eaten by
Desert Cottontail
Sylvilagus audubonii
May occasionally graze on the younger, less prickly leaves of the plant during early spring.
mutualism
Honey Bee
Apis mellifera
Frequently visits the fringed flowers to collect nectar, helping with pollination.
Traits
No trait badges are assigned for this object yet.
Also known as
No aliases listed yet.
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Safety
Danger
1/5 · Very low
No special safety notes yet.
Frequently Asked Questions
How long is Thistle Sage?
15-100 cm
How much does Thistle Sage weigh?
0.05-0.3 kg
How long does Thistle Sage live?
1 years
What does Thistle Sage eat?
As a photosynthetic plant, Thistle Sage manufactures its own energy from sunlight, carbon dioxide, and water while absorbing essential mineral nutrients from the soil.
Where is Thistle Sage usually found?
Found in dry, sandy or gravelly soils, desert washes, and open chaparral flats of California and Baja California.
How long do Thistle Sage eggs take to hatch?
14-28 days
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