RHS Chelsea Flower Show

Filters

Out of stock items ShowHide

Showing RHS Chelsea Flower Show Facing : South Location : Outdoor Sowing month outside : March Eventual Spread : 0.3m-0.6m Eventual Height : 0.6m-0.9m Sowing month inside or protected : September Leaf colour : Green clear all

Out of stock items ShowHide

Soil pH

Attractive to wildlife

Supplied As

Soil moisture

Sort by

Show 20 items

Showing 1 to 1 of 1 item

Showing RHS Chelsea Flower Show Facing : South Location : Outdoor Sowing month outside : March Eventual Spread : 0.3m-0.6m Eventual Height : 0.6m-0.9m Sowing month inside or protected : September Leaf colour : Green clear all

View info Centaurea Nigra | Black Knapweed Or Common Knapweed

From £2.99

approx 20 seeds

9cm pot

3 × 9cm pots

6 × 9cm pots

Get the latest news, offers and advice.

item added to your basket item removed from your wheelbarrow
View your basket