Surface to just cover
Seed To Bloom:
Start indoors 8 weeks before planting out. Keep at 65-75°F.
Direct sow after last frost.
PLACEMENT & CULTIVATION
An unusual edger, bedding, or container plant, cuphea 'Purple Passion's mouse-ear-like flowers will attract butterflies, bees, and sometimes even hummingbirds. It will do best with full sun (though it will tolerate some light shade for part of the day). If plants become leggy, pinch back. If overwintering indoors, bring in before temperatures drop below 37°F; keep in a sunny window where the temperature is 60-70°F. Reduce watering when growing indoors.
About 1" per week. While somewhat drought tolerant, greater moisture availability will increase growth and blooming. Avoid saturated soils.
Mix in a couple of inches of compost prior to planting. Alternatively, mix in a balanced granular fertilizer.
Diseases & Pests:
No major problems. If aphids or whiteflies appear spray with Insecticidal soap. Avoid fungal troubles and root rot by placing in a well-drained setting with decent air circulation.