Here in Pa also. I find mine only sent up aerials in the hotter days....hasn't
been overly hot here. I only have three right now, my sister's is filled with
aerials, but she has hers in full sun.

In October here, or even late september, my lotus dies off.....I sink it to the
bottom of the pond, 2.5 feet or so, and raise it back up in the spring....if
you have floaters, eventually you'll get the aerials.

Maureen