Agastache 'Black Adder'
(Giant hyssop)
Fluffy spikes of tiny lilac-blue flowers on straight stems with mid-green, mint-scented leaves create neat, upright, long-flowering clump.
Fluffy spikes of tiny lilac-blue flowers on straight stems with mid-green, mint-scented leaves create neat, upright, long-flowering clump.
Wildlife Friendly
Scented
Upright plant
In stock
Backordered
Available Soon
Delivery:
3-5 Working Days
Info
Colour: Blue
Flowers: June, July, August, and September
Height x Spread: 90cm x 75cm
Soil: Well-drained
How Much Sun: Full Sun
Hardy to -10 degrees and more. The foliage dies back in autumn and grows again in spring. Cut the top growth back before new shoots emerge. Needs a good well-drained soil.
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