Thorin Oaken

Hello!

I was wondering if it is dangerous to have plastic bits in the soil? I've seen somewhere that if plastic gets warmed up, by the sun for example, some dangerous chemicals get released and sipp into the soil.
Anyone knows about the safety of growing vegetables in plastic containers?

Greetings!

I was wondering if there are any other tree species that can be grafted onto Alder genus? Since the Alder genus lies inside the Betulaceae family, is it possible that I could graft hazelnut (corylus avelana) onto Alnus glutinosa trees?

Please help