Calathea rufibarba question (beginner)
I'm new to the forum (be gentle...).
I have a great calathea rufibarba that I have had for just under a year - over the past few days it seems to have deteriorated quickly - several of the older leaves have turned dry and crunchy and curled up, other newer leaves are very pale and some even yellow.
I have been watering the plant only when the top of the soil is dry, but have not let it dry out completely. It seemed to cope well with the central heating over the winter and I made sure I misted it regularly.
I have done nothing different in the past weeks which is why I am a little confused over its rapid deterioration.
Can anyone offer any help?
Could it be light (too much, too little?) - it is not situated in bright light, but in a quite shady area.
Could it be water (too much, too little?)
Or is it dreaded root rot?!
Any help/advice would be much appreciated.