Saltillo Primrose

Name: Saltillo Primrose
Brand: Outdoor Dream Builders

Oenothera stubbei

A fast-spreading Mexican primrose with sweet-scented dusk flowers that attract hawk moths.

Hardy in USDA zones 8-11 and root-hardy through low-desert winters, it tolerates frost into the low 20s°F with some dieback and revels in summer heat.

AMWUA Notes

A fast, low-water evening groundcover; shear its running stems to keep the spread in check around lawns and paving.

Care Guide

💧Watering

Water every 7-10 days in summer to fuel its fast spread by runners; established plants tolerate less but bloom best with regular moisture and good drainage.

✂️Pruning

Shear the mat back periodically to control its spreading runners and remove spent bloom; a hard cutback in late winter renews tired growth.

🌱Fertilizing

A single light spring feeding suffices; it grows and spreads readily without much input.

🛡️Pests

Flea beetles may pit the leaves and root rot occurs in wet soil; otherwise easy.

☀️Seasonal Notes

Bright yellow sweetly scented flowers open at dusk spring through fall; it may slow or partially die back in the coldest weeks and rebound in spring.

Soil, Feeding & Propagation

🪨Soil

Grows in a range of well-drained soils including sandy and rocky desert ground; tolerates poor soil but needs good drainage.

💧Drainage

Needs well-drained soil.

🌱Nutrient Needs

Low feeder.

🌰Propagation

Division of rooted runners, stem cuttings, or seed; spreads readily by runners.

📐Spacing

3-4 ft on center for fast low coverage

🌳Roots & Placement

Spreads aggressively by surface runners that creep beyond their spot; shear back to keep it out of turf and paving.

Placement Tips

•Space 3-4 ft apart for fast low coverage; it spreads by runners to fill gaps quickly.
•Use along evening-garden paths and patios where the dusk fragrance and hawk moths are enjoyed.
•Keep sheared back from turf and walkways since runners creep beyond their spot.
•Plant in full sun for the heaviest bloom.