Big sagebrush

Artemisia tridentata

Family:: Asteraceae
Elevation:: 4,500 ft – 9,000 ft
Bloom:: Aug – Oct
Region:: Southwest

The aromatic silver-gray shrub that scents the high desert after rain. Its three-toothed leaves (tridentata) are unmistakable, and it anchors vast stretches of the northern NM steppe.

Care · tuned to the Southwest

Water

None once established — it evolved for 8–12 in of annual rain. Summer irrigation in a landscape bed will rot it.

Sun & exposure

Full open sun.

Soil

Deep, well-drained, alkaline. Struggles in compacted clay or lawns that get regular water.

In the Southwest

Evergreen and highly aromatic; the smell of rain in northern NM is largely this plant. Do not shear into balls — it resents heavy pruning. Give it room and dry feet.

Common problems & fixes

Root rot from overwatering — cannot tolerate irrigated, poorly drained beds
Fix — Plant in dry, well-drained soil and give little to no supplemental water once established.
Legginess and dieback — grows open and sparse without renewal
Fix — Prune lightly in spring into living wood only; hard cuts into bare old wood may not resprout.

Pets & toxicity

Not toxic, but the volatile oils are bitter; pets leave it alone.

Easy to confuse with

Sand sagebrush (Artemisia filifolia) — threadlike leaves
Fringed sage (Artemisia frigida) — low, finely cut

Sources

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