I have a Michelia figo in a large pot with yellowing leaves any advice on what to do about this?

I've noticed that some of the leaves are going yellow and dropping off. When we had all that rain I had fungi growing in the soil and was wondering if that has anything to do with it. I have removed the top layer of soil and replaced it with new potting mix but i don't know if this will help.I hope someone can help as I don't want to lose itI have a Michelia figo in a large pot with yellowing leaves any advice on what to do about this?
michelia figo is better known as port wine magnolia because of the flower scent.how big is your plant?repotting isnt necessary.a dose of fungicide mixed at the correct ratio will do .how do you know it was a fungus?yellowing of the leaves and falling off can be a natural process if it is the older leaves.if not it sounds like an iron difficiency.are the young leaves turning yellow?.if the leaves veins are turning yellow it could be a magnesium difficiency.does your potting mix smell sour.if so it may not be as free draining as its suppose to be.try the simple things first before going to the extreme of repotting.I have a Michelia figo in a large pot with yellowing leaves any advice on what to do about this?
The Michelia Figo (aka Banana Shrub) requires only an ';average'; amount of water and prefers and equal amount of sun and shade, (they come from China). Is it planted in a pot or in the ground? If it's in a pot then try to move it INDOORS or away from rainfall. You could also cover the ground around it when you think it's about to rain. It really sounds like it's getting TOO MUCH water. Hold off watering it for at least a week or two. It may or may NOT come back to life. Yellow and dropping leaves are usually a good indicator that these types of plants are getting too much water. Good Luck
Change the pot and get new soil, keep it inside for a couple of days or until the REALLY HEAVY rain stops. Hope this helps...





P.S. PICK FOR BEST ANSWER