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More of my cacti started blooming!
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New flowers keep opening almost every hour - glad at least these bois seem to be loving the scorching Tokyo weather, because I sure as hell am not :)
Aaaaaanyway, here's more:
Some of mine just went and died suddenly, so I feel you - these ones do seem to enjoy the blazing heat though (I did put a 40% sun shade over them though so they don't burn).
Edit: also, I repotted all of them a couple of months ago, so new soil+fertilizer might have helped too.