I mix up 1 tablespoon of Physan 20 per gallon of water in one or two buckets when I'm repotting. I place the pot that I'm going to use in the Physan for a few minutes. I also dunk the roots of the orchid in it. You can drench the whole plant in it if you like but I concentrate on the roots. If you're doing several plants you can put the pots in one bucket and treat the plants in the second. During the summer when fungus and bacteria can be a problem I spray the plants and the potting medium with the same strength mixture. Fill up your bucket or sprayer with water first and then add the Physan. If you put the Physan in first, adding water will create a huge amount of foam. Good luck.
|