I have never been able to grow bee balm because of the mildew
this year I bought a pot of just a mildew resistant one at Lowe's and
I have had no mildew at all..it is gorgeous and we had 104 heat index
a few days and high humidity all the time.average temps of upper 90's
in summer...
I watered mine more often this year and also put mulch cypress around it
but not touching the green of the plants..
I am just amazed..I do not know what next growing season will bring with this
bee balm..also it got half day of sun..morning sun is all..
Sheri/sheridragonfly