Hi,
I'm looking for a book I had when I was small, it was a picture book and as I remember it, beautifully illustrated. I think an acorn was thrown away? And it because this huge tree that grew all through the house, bursting floorboards. But I can't remember title or author or any other useful details, and when I search for it online I keep finding books about actual treehouses. Or guidelines on how to grow an oak tree 
If anyone has any ideas I'd be really happy to find it again. I grew up in the 80s if that helps at all?
Thank you.