RHS Chelsea Flower Show

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Showing RHS Chelsea Flower Show How much sun : Sun Location : Outdoor Sowing month inside or protected : October Sowing month outside : May Soil pH : Acid clear all

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Showing RHS Chelsea Flower Show How much sun : Sun Location : Outdoor Sowing month inside or protected : October Sowing month outside : May Soil pH : Acid clear all

20% off

View info Centaurea Nigra | Black Knapweed Or Common Knapweed

From £2.39

approx 20 seeds

9cm pot

3 × 9cm pots

6 × 9cm pots

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