Surface sow and press in. Cover with a light application of vermiculite.
60+ days after chill
Sow indoors in winter. Keep at 70°F for 3 weeks, then stratify at 36-40°F (in fridge) for 4-6 weeks, then 55-65°F. If there is no germination after 30 days, repeat the warm/chill cycle.
Direct sow in late summer to fall.
PLACEMENT & CULTIVATION
Sea holly 'Miss Willmott's Ghost' has a spectral, light-reflecting sheen that makes it visible at dusk as you stroll your summer borders. Perfectly matched with drier areas, and popular for xeriscaping, gravel gardens, plus more fertile perennial borders. Sprinkle some fine gravel around the crowns to allow proper drainage during wintertime. A biennial to short lived perennial that self-sows, sometimes too abundantly–cut most to the ground after flowering.
Water regularly while establishing, then only during especially dry, hot spells.
Prefers acidic to neutral soils.
Do not fertilize during the first year of establishment. Subsequently, a springtime application of organic granular fertilizer or a 1/2" layer of compost.
Diseases & Pests:
No major pests or diseases. If aphids appear, spray plants down with a stream of water or spray with insecticidal soap. Occasionally, slugs or snails may be a problem—apply pelletized iron phosphate or some diatomaceous earth to the surrounding soil.
When to Cut for Bouquets:
Harvest when flowers are fully open.