COLORADO WESTERN TIER WILDFLOWERS

 Jim Fuchs

Plant Spreadsheet

Yellow     Red     White     Greenish     Blue-Purple

If you prefer, organized by  Name or Plant Feature


Centaurea (Asteraceae)

Centaurea calcitrapa

I knew of only 3 Centaurea calcitrapa plants growing in Colorado. One was found in 2014, and two were found in a different area in 2015. They were all pulled up and destroyed. Some seeds were found in 2015. My small seed sample exhibited 50% seed germination (85% if soaked in water for 24 hours).

Centaurea calcitrapa

"Look what I found!"

Centaurea calcitrapa

Flower

Centaurea calcitrapa

Flower

Centaurea calcitrapa

Flower

Centaurea calcitrapa

Plant - 2015-07-29

Centaurea calcitrapa

Plant

Centaurea calcitrapa

Stem

Centaurea calcitrapa

Seeds - 12 from one seedhead

Centaurea calcitrapa

Sprout - about 3 months after planting. 2015-12-16

Centaurea calcitrapa

Seedling: 2016-January-14

Centaurea calcitrapa

Seedling: 2016-February-09

Centaurea calcitrapa

Seedling: 2016-February-21

Centaurea calcitrapa

Seedling: 2016-March-05

Centaurea calcitrapa

Same "seedling": 2016-May-15

Centaurea calcitrapa

Sharp stiff spines in middle of rosette

Centaurea calcitrapa

2016-May-30

Centaurea calcitrapa

2016-May-30

Centaurea calcitrapa

2016-June-17; it bloomed the same year.

Centaurea calcitrapa

This did not bloom in year 1. 2nd year rosette also grew spines.

Centaurea diffusa

Centaurea diffusa

Centaurea diffusa

Centaurea diffusa

Centaurea diffusa

Centaurea diffusa

Centaurea diffusa

Centaurea diffusa

Centaurea diffusa