[scotty]

I found what I believe to be a plum tree seedling as the kernel was still attached. I replanted it into a pot with well rotted manure at the bottom. If it grows will it ever fruit?

[Liparis]

It may well fruit in at least 7 - 10 years. But be prepared for disapointment, the fruit may not be palatable. But, some of our best fruit trees have been discovered like that. Is there a tree nearby that it came from? Might it be wild Damson? It's a heavy seed to just appear. What sort of trees are around you?
Bill.

[James Kilkelly]

As Liparis said you can expect fruit but don't bet your life-savings on it being a very refined fruit.
Wherever you eventually plant the tree, give it a lot more space than you would a garden centre bought plum tree.
If it is wild it will be wild in size as well.

You see most garden centre bought plum trees like their apple trees comrades are grafted, upper to rootstock.
This is a method of control over fruiting, tree size and vigour.
Two real interesting posts on the subject at the bottom of this thread.... http://www.gardenplansireland.com/forum/about1519.html

[medieval knievel]

i must try planting some plums from the trees we have, actually.