Q.Medinilla Drying And Falling Leaves As Well As Heavy Fungus Gnats Infestation
I had a lovely medinilla in a nice bright room.
Firstly it looked like thriving as it gave many new leaves and stems, but then the leaves started curling up and some fell off right at the beginning.
Then I have noticed fungus gnats which now for many months I haven’t been able to get rid of. I changed the soil twice in the last six months, used mosquito bits.
Didn’t seem to help.
I was told that my plant was over watered – but the mosquito bits also need water to be activated. Which makes life hard.
Now the plant looks even more miserable; leaves have dry patched in various locations, some fallen off , some stems are limp and the infestation is still there ?
How can I save this plant ?

Certified GKH Gardening Expert
Make certain you are providing its cultural needs. They have specific requirements such as year-round humidity and infrequent watering similar to a succulent. You may be overwatering. Also keep them away from drafts.
Gnats are hard to get rid of but here is an article that should help. Also, keeping the soil dryer will reduce their numbers.
https://www.gardeningknowhow.com/plant-problems/pests/insects/fungus-gnats.htm
https://www.gardeningknowhow.com/houseplants/medinilla/caring-for-medinilla-plants.htm