Greater knapweed Seeds - Centaurea scabiosa
Greater knapweed - Centaurea scabiosa
Approximate height: up to 1m
Flowering time: June to September
Site and soil type: Prefers moist but well drained soil in sun or semi-shade.
When to sow: Spring or autumn
Greater Knapweed, sometimes call Black Top is an upright plant with purple flower heads.
It blooms from June to September and is very popular with butterflies including Marbled whites, Meadow browns and Common blues.
Sow directly into the soil in Spring or autumn and either gently rake the seeds in or cover very lightly with soil. They can also be sown into trays of compost and pricked out and grown on for later planting or into biodegradable pots for planting when grown.
Contents: Approximately 45 seeds / 0.3 g
All Jemima’s Garden seeds are plastic free. They’re contained in an inner glassine envelope, (made from pine wood cellulose), and an outer FSC certified Kraft paper seed packet. Any packaging used when shipping is also plastic free and recyclable.
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(Excludes seeds in tins).
RHS Plants for Pollinators. The RHS Plants for Pollinators mark is only given to plants that support pollinating insects. Find out more at rhs.org.uk/plantsforpollinators
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