How to Grow Dianthus

Dianthus

Dianthus caryophyllus

Details

Plant type: tender perennial
Planting season: early spring
Site: sun
Seed depth: 1/16" or surface sow
Days to germination: 7-14 days at 65-72°F (18-22°C)
Days to maturity: 130-140
Plant spacing: 6"
Height: up to 30"
Pinch: when plants are 8" tall

Growing Notes

Transplant (recommended) - Sow 6-8 weeks before last frost. Lightly press seed into growing medium. Transplant into cell packs or 3-4" containers 20-25 days after sowing. Harden off and transplant out 6-8 weeks after sowing. Cool temperatures of 50-55°F (10-13°C) are required to keep the plants low growing and basal branching. Avoid warm temperatures in excess of 65°F (18°C), especially at night, which will produce soft growth.

Direct seed - Early spring when a light frost is still possible.

Harvest

Harvest when 10-20% of flowers in cluster or spray are open.

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