I wish I could say I noticed what was behind these cactus flowers, but I confess, I did not. Generally, when photographing flowers, I open my aperture as far as it will go. I like to focus on one flower and make the background blurred, allowing the focus on the one indeed subject. Exactly, what I did with this shot. It wasn’t until I uploaded, did I notice the remainder of the cactus twisted stem, with all it’s pointy spikes.