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SUS Farms · Utah Seed Library
Growing Thrift (Splendens) in Utah
flower · Plumbaginaceae · cool season · 90 days to harvest
Methodtransplant
Days to maturity90 days
Seed depth0.0625″
Plant spacing8″
Row spacing10″
Germ. temp55–70°F
Schedule (May 15 last frost · Sevier County)
| Start indoors | 3/6 |
| Transplant out | 5/1 |
| First harvest | 7/31 |
Planting depth, drawn to scale
Step-by-step
- 1. Start indoors 10 weeks before last frost. Seed-starting mix in 2-4" cells. Bottom heat at 55–70°F until germination, then drop to room temperature. 14-16 hours of light from clip-lamp 2" from leaves.
- 2. Harden off for 7 days. Day 1: 1 hour outside in shade. Add an hour and more sun each day. Skip if windy or below 50°F.
- 3. Transplant 8″ apart in rows 10″ apart. Soil should be at least 55°F before planting. Black plastic mulch laid two weeks ahead helps in cool springs.
- 4. Mulch and water consistently. 2" of straw or wood chip around the base. Drip line at surface. 1" per week including rain.
- 5. Harvest around day 90. Cushion of grass-like foliage with pink pom-pom flowers. Drought-tolerant rock-garden perennial.
