Sowing and Growing Notes
The Palmer’s Penstemon seed needs cold, moist stratification, so sow outdoors in late fall and let a Northern Nevada winter do the work. For a spring sowing, refrigerate the seed in damp sand for about six weeks first. Sow onto lean, gravelly, sharply drained ground in full sun and cover very lightly. Do not sow into an irrigated bed.
Water: Low
Sun: Full Sun
Soil: Sharply drained; lean, gravelly, alkaline soil
Mature size: W 18"-24" x H 3'-5'
Maintenance
Expect a rosette the first year and flowers the second. Once up, no summer water, no fertilizer, and leave the stems standing over winter before cutting back in late spring. Let it drop seed so the plant can renew itself.