I just can't resist a bad pun, but perhaps I should've considering the time-consuming nature of cactus spines!
The edition is varied, as I changed inks and then hand-colored some of the prints, but all the prints for this exchange are identical. Namely, they are printed on Somerset Satin paper using Graphic Chemical and Ink's water-based relief ink (black). The block was soft maple. The cacti, which now live in my front yard, are a Ferocactus species (on the left) and an Echinocereus species (on the right).