Perlite in the grow cups
 

Hi Ron Can one use Pearlite in the grow cups if the holes were smaller or if you used a screening
material such as the end of a pantyhose?

Yes but the problem with Perlite is it floats out of the cups when the water rises. So if you could tie
the pantyhose around the plant stem to contain the Perlite. Or how about a plastic coke lid with a
hole and a slit to go around the plant stem.
I will do some experimenting and post the results. Here's how Glen does it.
Ron