I recently repotted a Euphorbia Milii that hasn't been doing too well. I posted a question on the forum, and it seemed like the pot was too large. Specifically, I got this answer from a helpful forum user:
"The pot should only be large enough to leave an inch (at most) of clear soil around and below the rootball. The reason for this is because, with a lot of empty soil around a rootball, over or underwatering is easy to do - in order to keep the rootball moist, all the soil has to be wet, but then your plant's roots are sitting in wet soil. Equally, its possible that the surrounding soil is wet, but the rootball isn't." (link to the question:Euphorbia milii (crown of thorns))
I feel that the terracotta pots I have lying around which would be of a suitable size for my plant will have drainage issues, since they have only one hole. This worries me, since the plant I have to repot is sensitive to having damp roots. I put the Euphorbia in one of these anyway, with a crock to let water pass through the hole, but I worry about the drainage, since there is after all only one hole. I have yet to find any terracotta pots with more than one hole, by the way (side question: why is that??). I left it in there like that for two weeks with no improvement.
I did find two plastic pots, one tall and one stout, but not as wide as the tall one. Basically I cut out the bottom of the small pot, filled the large one loosely with soil, placed the plant in the smaller pot, and put the small pot inside the large one. the hope is that by watering the small pot, the roots will get wet, and all the excess water will drain to the bottom of the pot, since there is plenty of room for it to go. I have an illustration here:
All the soil in the pot is cactus soil. So, is this a good/bad idea? Is the drainage going to happen like I think it will? Did I just murder my Euphorbia?