Why are all of my houseplants getting diseases on the roots and dying?
I am not over or under watering the plants. I provide them with adequate nutrients yet they are dying. More than 20 have died in the last six months. The plants are receiving adequate sun light.
Answer
I am sorry to hear of this seeming epidemic of your house plants. I wonder if this is a problem with the soil that you are using, which may be infected with a disease or a microscopic pest. I suggest that you contact the Agricultural Extension Service. They will probably want a sample of the roots of the affected plants, as well as a soil sample. Here is contact information for the Philadelphia County Extension Service:
Address
675 Sansom Street
Philadelphia, PA 19106
Phone: 215-471-2200
Email: PhiladelphiaExt@psu.edu
Office Hours
Monday-Friday 8:30 a.m. - 5:00 p.m.
I hope they can be of help.