The first step that you want to do in dividing perennials is reduce transplant shock. We do this by thoroughly soaking the plant. You don't want to have too much pressure, water pressure, as it will just run off and not really thoroughly soak. By doing this, this will help send more energy into the root system and will ease in planting and rooting later. You would insert this into the plant and leave it there for at least a half an hour. You want to thoroughly drench the whole plant system so that it has time to absorb up as much water as possible before you disturb those root systems. I will just put this here and let it soak for about a half an hour.