Legalily said:Is it too early to spread the Milorganite in zone 5b? 
We have very little life on our daylilies either.
The microorganisms that make the nutrients in Milorganite available to the plants are only active between 55-85 degrees F soil temperature. It probably doesn't hurt to put it down earlier as long as there isn't a chance it will get washed away with heavy rain or more snow, but if you're a long way away from 55F soil temp currently I'd be inclined to wait a bit unless you're also needing it for deer repellent. That was a long sentence!
