Fishbone thistle (Ptilostemon diacantha)

Fishbone thistle is a rosette-forming, evergreen biennial or short-lived perennial with long, narrowly lance-shaped, lobed, spiny, white-veined, grey-green leaves and upright, branching stems bearing clusters of purple, thistle-like flowers in summer.

Winterhardy evergreen short-lived perennial
Height 
50 cm
Width 
50-60 cm
Spacing
30-50 cm (5 pc/m2)
Flowering time
VII-VIII
Site
sunny, dry to medium moist, well drained  soil. 
Usage
solo plant, groups
Propagation 
seeds
Availability 2020 summer
plants

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