Hi:
Mangos you get at the store here in Florida are usually monoembryonic, at least that is what I have read. So, the source of your seed can tell you a lot about the type of mango you have. Do you know the variety of mango your seeds came from?

Q1. Does each stem belong to a separate plant, or are they attached (i.e., can I pull them apart or do I have to cut them apart?

A1. If you have polyembryonic seedlings you should be able to pull them apart, that is, they should not be attached to each other and they should have their own roots.

2. Is it safe to separate them at this stage?

A2. I am not sure if it is "safe", but I have done it before with plants that were about 12" high and lost 1 of four seedlings. It is hard to untangle the roots without damaging them.

3. Should I dig them up and plant them separately, or is it better to pluck out the little ones and try not to disturb the big one's root?

A3. If you only want 1 plant, you probably should just plug the little ones and let the larger plant grow. Usually the larger plant in the bunch is identical to its parent.

4. Should I wait until the warm season to do it?

A4. I would wait for sure. Mangos get enough stress from the winter already. Now, if you decide to plug the other seedlings, you are probably ok doing that now...

Thanks. Both seedlings are from grocery store mangoes; the stickers didn't say what variety, only that they were from Mexico, if I remember correctly. If there really is just one root under all those stems, I guess I'll find out next year.