Select a size

20% off selected

Agastache Blackadder | Hyssop

20% off selected

Agastache Blackadder | Hyssop

Agastache Blackadder | Hyssop

£17.99

Hyssops are great for adding height to a border, with whorls of long-lasting, tiny flowers arranged like a bottlebrush, and pointed,...

2 litre pot
Select from 5 options
1
£17.99
Available to order from autumn
BUY NOW
Delivery van
Standard £5.99
Add to Wish List

Buy now pay later

Plant description

Hyssops are great for adding height to a border, with whorls of long-lasting, tiny flowers arranged like a bottlebrush, and pointed, aromatic fresh green leaves that are attractive to butterflies. They are short-lived though, and may need replacing every few years, especially after a cold or wet winter. 'Blackadder' has smoky, violet flowers on long spires from July to October. Try it as part of a Mediterranean scheme or in a sunny, well-drained border among ornamental grasses.
Position

Position

Full sun

Rate of growth

Rate of growth

Average

Flowering period

Flowering period

July - October

Soil type

Soil type

All soil types

Hardiness

Hardiness

Semi hardy

Eventual height & spread
Eventual height and spread

Specifications

Delivery Option
Standard delivery
Location
Outdoor
Sunlight
Full sun
Soil type
Sandy, Chalky
Rate of growth
Average
Hardiness
Semi hardy
Flowering Period
July - October
Flower colour
Purple
Product Code
PL30001438

Care guide

Don't cut back the faded flower-stems until early spring, as they provide interest in the winter months. Lift and divide congested colonies in spring.

Reviews