I'm pulling a super tomorrow that should be sourwood, so I'll let you guys know what I get. I already got one medium frame of what I'm pretty sure is sourwood from another hive. I got almost 2 pints out of it. I think the blooms are starting to slow up here. We had a really heavy rain a few days ago that knocked a lot of the open blossoms off, but there are still some that haven't opened yet that are okay. My bees aren't on my trees, so it's hard for me to get a gage on how things are going with the flow. Other trees in sunnier locations are blooming better than mine, so the bees seemingly are targeting those trees instead. The bumble bees are enjoying my trees though, so I know the flow is on.