It's amazing that while for some things in the garden are the biggest mission to grow,other things just pop up and thrive with no help from you whatsoever. For a friend of mine it's macadamias. She has them popping up everywhere, in the most unlikely places, clinging to bits of leaf litter and generally going nuts. Of course I go and pinch one of hers and it is now so peeved that it hasn't sprouted a new leaf in over six months.
For me what pops up in the garden, is paw paw. Everywhere, all the time. This little one above is next to some watermelons. The good thing about paw paws is that they don't spread out, so I usually just leave them to do their thing.
The bad thing is that I don't actually like the taste of them.
I am getting better, but why couldn't a lychee tree be my pop up fruit?
What's your pop up plant?