Height
Small
Medium
Large
Situation
Part shade
Shade
Sun
Colour
Red
Blue
Green
Yellow
Orange
Pink
Purple
White
Soil Type
Fertile soil
Moisture retentive soil
Reasonable soil
Well drained soil
Season
Spring
Summer
Autumn
Winter
Multiple
'Dark Knight' is a fantastic and reliable shrub for injecting late summer colour into a border, producing stunningly deep blue nectar rich flowers that are much sought after by bees and butterflies.
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