Interspecies grafting

[prairiegardens]

Apparently pears can successfully be grafted onto cotoneaster, would/could any fruit trees/shrubs be grafted onto poplar? In spite of being short lived trees that grow too tall for reasonable access they might  perhaps be useful  as decoy crops for birds?  Mulberry eg won't survive here....yet, anyway. Anyone tried anything weird like that? 

[khoomeizhi]

Cotoneaster is at least in the Rosaceae family with apples, pears, haws, etc. I don't know of an edible fruit in the Salicaceae with the poplars , so this would be interfamilial grafting and much less likely to work. I've never heard of such a graft working.