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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 indoors3/6
Transplant out5/1
First harvest7/31

Planting depth, drawn to scale

0"1"2"3"4"5"6"0.0625" deep

Step-by-step

  1. 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. 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. 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. 4. Mulch and water consistently. 2" of straw or wood chip around the base. Drip line at surface. 1" per week including rain.
  5. 5. Harvest around day 90. Cushion of grass-like foliage with pink pom-pom flowers. Drought-tolerant rock-garden perennial.