Kaktus said: Just finished potting them..
The media are very gritty, pumice : charcoal : lava rock, 1:1:2.
Usually I will have compost, garden soil and goat dung in the mix, but not for these 4, as I don't want any media that can retain too much water, the plan is to keep them in full sun, and water everyday.
A bit oversize pot as I need media to retain enough water .. So confusing ...huh..
Kaktus said: Last night there was heavy rain again for 2 hours, this morning I checked, 3 of them, plant B, C, D potentially have stem rot, their main trunk feel soft, I think I will lost them..
Kaktus said: I have unpotted those 3 plants, the roots still look healthy, only the stem dehydrated like what Gigi said. The soil totally wet, hope they are ok, will wait for a few more days before potting them again. Thanks all for the suggestion.