June - September.
50 - 100 cms high.
The word 'knap' means 'knob' - "knobweed".
The scientific name probably derives from
Greek mythology in which the centaur
(half man-half horse) Chiron was said to
have used the plant for its healing powers.
Superstition has it that Knapweed can be
used to predict the future of a maiden.
If the florets of a flower head blossom
while inside her blouse for an hour,
she will soon receive a marriage proposal.