Looks like either Red Thread or Pink Patch, that pink color you are seeing is a characteristic of both diseases. Red thread tends to be pretty benign, although unsightly, and will usually resolve itself without chemical fungicides. Red thread often strikes nitrogen deficient turf, but it can be found on healthy turf as well. Pink Patch is similar in that it produces pink color, and is fairly benign, but with Pink Patch you get cottony growths on the blades, unlike Red Thread's antler like growths from the tips of leaf blades. Again, low nitrogen can be a factor, but the main one is turf that is constantly wet for extended periods of time like your are having in Long Island.

Seem to have lost my picture! I'll try again later. Sorry

Thank you so much. How much bigger might this tree get? I'd say right now it's close to 20 feet tall, and it's close to if not already overhanging two neighbors' property lines.

I also have A. tuberosa all over the place; I did start it in a sandy bed, but it has volunteered itself in loamy beds with lots of compost. All areas it's in have good drainage though and lots of sun. The A.incarnata likes damp soil--it generally a wetland plant, but it does just fine in a typical garden bed too. It too has volunteered itself in all of my beds, and does fine in a hot, dry bed. Sounds like your plants will be fine. Have fun with your new flower bed and with butterfly gardening. Hope you get lots of Monarchs your way.