Opuntia Engelmannii all right or not ?

[J-M]

Hello,

I noticed that on the pads pale marks started to appear about 2 months ago.

If it can help you ... The plant was outside all summer, since September it is in the house sitting on a SE windowsill. was watered once per month since then.

Should I worry or not ?

[iann]

The plant looks healthy. The marks are caused by minor skin damage, which shouldn't be fatal. Perhaps water that evaporated and scorched the pad, or the opposite dampness that caused a slight fungal or bacterial growth. What you see now is essentially a scar - it won't go away but so long as they don't spread or multiply rapidly then they aren't dangerous.

[J-M]

You are probably right, thanks iann.

There is a lot of rain during summer here. I plan to build a kind of roof with a polycarbonate sheet next year. Hopefully it will prevent scars like that.