Echinocereus viridiflorus: The special thing about this cactus is not only the green flowers, to which it owes its name, but also the fact that it is hardy down to -20°C if you protect it from moisture.

Mine, however, did not recover after only three days of continuous rain during the summer and unfortunately has shuffled off this mortal coil. In memory of this pretty little cactus, I would like to share this photo with you.