|Pots should not be in contact with the soil, as diseases can both leave and enter through drainage holes. Insulate pots from the soil surface using one or all of these methods:
|Fallen leaves and standing water + inoculum = Phytophthora infection|
|Do not use dirty pots, they may contain inoculum.|
|If you re-use pots, be sure to clean residual soil and sanitize, using a dilute disinfectant solution, hot water, or steam.