Well I have no experience there - in TX. ALL milkweed gets OE. Not just Tropical. I am also of the attitude that IF you have cats, why in hell would you cut the plant down and cause the death of the Cats? That is freaking nuts. I would wait til there is no sign of Cats and then whack off to the ground. The problem is that the longer the plant lives, the higher the probability that the OE will get more concentrated.
I understand your confusion. Problem with Tropical is there is a lot of misinformation out there - some is pure BS from some of the "purists".
@Altheabyanothername
Sharon - I found the paper by Dr. Glassberg - Pres of NABA, Send me your regular email address and I will send you a opy of the PDF file.
