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Diffuse Knapweed

Diffuse Knapweed (Centaurea diffusa)

Diffuse knapweed is an
annual
or
biennial plant
, generally growing to between 10 and 60 cm in height. It has a highly branched stem and a large
taproot
, as well as a basal rosette of
leaves
with smaller leaves alternating on the upright stems.
Flowers
are usually white or pink and grow out of urn-shaped
heads
carried at the tips of the many branches. Diffuse knapweed often assumes a short rosette form for one year, reaching maximum size, then rapidly growing and flowering during the second year. A single plant can produce approximately 18,000
seeds
.

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