I have a cactus that seems to be difficult to identify.
I posted photos in Davesgarden Identification forum and they all answered my quieres but without success, they are all wonderful when it comes to helping me identify plants.
But this cactus is proving a bit of a mystery.
Can some here in the forum help me identify what cactus it could be.
At first I believed it was a mammillaria , that was when it was smaller, then it was suggested that it could be a Thelocactus .....I looked up Thelocactus and none of the images I found looked like my cactus.
This message was edited Aug 29, 2015 2:43 PM
cactus without a name
It could a Coryphanta of some sort that is not getting enough sunlight.
Cristina chose to edit out the link to her query on the Plant ID Forum. Here it is:
Thanks for the response, you could be right mcvansoest, as for lack of sun, I do live in southern Chile and we are currently in winter. But the cactus sits on a shelf , top shelf on a decking with clear PVC roof and seems to get full sun during the day.
Cristina, I think I would stop watering and especially stop fertilizing your plant to discourage it trying to grow during the short day season.
Reducing water is probably a good idea. Just as a side note, it's not full sun if there's something between your plant and the sun. Even clear plastic will filter sunlight, depending on the material, and especially UV. Roofing collects dirt on top which can reduce transmission even more.