Spider Mites are the worse insects for daylilies we have in this area. I start spraying in late February or early March and for three weeks, once a week. This keeps us from having a large out break. I do not fertilize thru my watering sys and don't know that it does much for the insects, its just the way I have watered the last many years. I also do a lot of digging in the beds and all those hoses would be a problem I think.
Good job at the Monday night meeting Michele.