Fruit trees from compost?

[kite]

Anyone ever get a fruit tree growing from their compost?

I had two trees (volunteers) come up last year, now I'm seeing a third.  I suspect they are cherry plum trees.  Leaves started out red/plum colored and have been turning green.  Two of them reached 6 feet this year, but did not flower. 
I'm keen to move them for the health of the trees, and exactly where will depend on whether or not we think it will bear fruit for us. 

[SweatingInAR]

Consider reposting, or moving this, to https://forum.mrmoneymustache.com/gardening-diy/

You have a chance of getting fruit if you live in a good climate for cherries or plums. I would not count on that fruit being any good, but it certainly could be!

I have fun messing with fruit trees, so I would move them to a good spot and then graft a branch from some known varieties to them. You can buy "scion wood" from various places, or prune a branch from a friend's tree in the winter. There are tons of great resources on the web for grafting!

@YttriumNitrate might be a good resource, too.
https://forum.mrmoneymustache.com/gardening-diy/planting-and-growing-your-own-2022/msg3030080/#msg3030080

Read about grafting here, and buy scion wood:
https://www.fruitwoodnursery.com/propagation-info

[GuitarStv]

We have two pear trees in our yard that bear fruit every year and were planted from pear seeds that were being thrown out.  The pears aren't anything special, but they're edible.

[Dreamer40]

Fruit trees are a lot of work so I would personally toss those out and go with known varieties that are a better guarantee of being worth the effort. I also like the “Grow a little fruit tree” method, which would have you chop down the height sooner to encourage low lateral branching and a smaller tree overall.

[YttriumNitrate]

Fruit trees from compost are like a box of chocolates, you never know what you're gonna get.

The general advice is that growing seeds from food you've eaten is usually not worth the effort, but my opinion is that you've got the space to grow them it can be an interesting experiment. At the very least, you've satisfied one of Hemingway's four tasks. The odds are more in your favor if the seed happens to be from something fairly local (e.g., a farmers market) as opposed to something from a completely different growing environment.

As SweatingInFL mentioned, if you want you can graft them the trees over to known variety. If they are plum cherries, you've got a lot of options because members of the prunus genus (plums, peaches, apricots, cherries, almonds) are often compatible with each other. If you're in the USA, the north american scion exchange group on Facebook is where I usually get scion wood https://www.facebook.com/groups/scionexchange, but there are also groups dedicated to specific types of fruit and trading happens there too. January to March/April is the trading time, so don't both asking now.

As Dreamer40 mentioned, the "knee-high cut" is pretty standard for commercial production for many types of trees and is particualarly good when you want to train the tree to an open center style which is used for most prunus/stone fruit.