Well, now that we know how you are going to respond I think it is safe to say that you just dug yourself in pretty deep.
Yes, we can and do have a trademark on "Homegrown" when it is used in any adult context. Why don't you consult with an attorney and found out how much of a leg you have to stand on before you go incriminating yourself on a message board...
After you do that... then ask yourself, do you want to do this the hard way or do you want to do this the easy way where it is mutually beneficial?
You are already on notice so I guess you should already guess that the clock is running on time to decide.