Q.Are My Mums Dead
on one plant all the leaves wilted – although still green. on the other leaves are still green but it’s not growing at all.
Certified GKH Gardening Expert
They appear to have life to them, still. They are very heavily infected, so you may want fresh soil, but by the time that you change the soil they will be close to the end of their lifespan.
I would recommend starting with fresh soil next time around, and watching the water. Those cloth containers can be difficult to work with for most novice gardeners, and I would recommend using a hard container for picky Annuals.
Here is an article that will help you to grow these plants:
https://www.gardeningknowhow.com/ornamental/flowers/chrysanthemum/growing-mums-in-containers.htm