Petunia exserta cross pollination.
Hello all. I have a petunia exserta that is about to bloom and I had read that having a Petunia axillaris nearby would cause offspring to be pink. I have many petunia volunteers nearby and was wondering if it will cross pollinate with any Petunia? I'm not sure the variety of the volunteers, they are mostly purple. I want to keep these what they are, Petunia exserta. Do I need to move them? If so, how far away would you recommend? Thanks, Susan