Most Beautiful Jewelflower | Streptanthus glandulosus ssp. glandulosus

Streptanthus glandulosus ssp. glandulosus is a striking California native annual wildflower in the mustard family, known by the common name Most Beautiful Jewelflower. Native to the coastal ranges and foothills of California, it is often found in rocky, well-drained soils, grasslands, chaparral, and open woodland. This species is adapted to dry conditions and poor soils, thriving in sunny spots where other plants might struggle.
A standout among wildflowers, the Most Beautiful Jewelflower grows with a wiry, upright habit, and produces distinctive, urn-shaped flowers that range in color from pale lavender to deep purple, often with green or metallic hues. The stems and foliage are lightly glandular or bristly—features that may help deter browsing by deer. Its unique look and drought tolerance make it a favorite for native wildflower gardens, pollinator plots, and restoration projects.
This annual typically grows 1 to 3 feet tall, with narrow leaves that clasp the stem. Flowers bloom along the upper portion of the plant in late spring to early summer. The fruit is a long, slender pod typical of the mustard family, adding visual interest even after flowering.

Height: 1–3 feet
Optimum Soil Temperature for Germination: 55°F–70°F
Blooming Period: March–May
Germination: 15–45 days
Sowing Depth: 1/8"
Light: Full sun
Soil: Well-drained, sandy or rocky

Packet contains 1 organically grown seedpod (~20 seeds), untreated, non-GMO. Grown and hand packed in California.