Hey Bill,
I've used the rain science bags with everything except canna. If you elevate the bottom the roots will reach down through the material really easily. If there is a pool they will pull from it. They are excellent at wicking but if you let it dry out just a hair too much, when top watering all the water will run out the sides. Bottom watering works great.
EDIT: I need a thesaurus. I use the same phrase too often.
I've used the rain science bags with everything except canna. If you elevate the bottom the roots will reach down through the material really easily. If there is a pool they will pull from it. They are excellent at wicking but if you let it dry out just a hair too much, when top watering all the water will run out the sides. Bottom watering works great.
EDIT: I need a thesaurus. I use the same phrase too often.