Yucca Stump. From outdoor tree
I cut the top off a yucca tree that was grown in the ground outdoors for 2 years. Per instructions from the web, I let the stump sit around for 1 week to 'callous'. I also waxed the top end at the time of the cutting. I put this into a container with potting mix and sand mixed in. I covered the entire thing with a plastic bag and put it in a moderately lit area, with moist sand.
It's been two weeks, and I found that this is the breeding ground for the fungus gnats I've been seeing.
I took it outside for now. Is there something else to do. Has anyone had success doing this, both growing yucca this way or getting rid of the gnats?