This blossom has been developing for more than a month. It is about 2.5 inches (6.5 centimeteres) in height.
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/10271343@N00">Ken Bosma</a>
CC BY 2.0
originally posted to <b><a href="//commons.wikimedia.org/wiki/Flickr" class="mw-redirect" title="Flickr">Flickr</a></b> as <a rel="nofollow" class="external text" href="https://www.flickr.com/photos/10271343@N00/2491547000">Rainbow Cactus Blossom</a>