Lynn I could never grow good hanging plants in coir baskets until I learned I had to line them years ago. When I was working I was out of town and not home to water the plants every day. Everything really was dead.
This year I finally had to put plastic on the outside of the coir because the birds were taking all the coir from the side. I let them take from the corners on top but they were pulling all the coir out and the soil started falling out.
I do not have hanging baskets anymore but I have the railing hanging basket.
Look at this bird eyeing where he is going attack the coir.