I have two viburnums in the garden: V. carlesii and V. x burkwoodii (if it's not burkwoodii it looks very much like it).

Both of these shrubs get berries. I collect the berries and sometimes remember to sow them here and there, then I forget where. It's all very haphazzard.

In the recentish past I have come across young V. tinus popping up. I've pulled most out (about a dozon or so). I've left two or three which I might remove later and put elsewhere or give away.

What I am curious about is, did the seeds I plant whose parents are both deciduous produce these evergreen viburnums? Never before have I had V. tinus popping up like this. I suppose a bird could be depositing seed from someone's V. tinus but it never happened before I started putting seeds from my own viburnums here and there.

BTW, I was most interested to read on here some time ago that for viburnums to produce seed there had to be different species available with which to cross. Wouldn't two deciduous viburnums produce only deciduous offspring or is it like any other genetics: so much more complicated?