Snapdragon Questions!

A while back my OH and I were clearing an area at the end of our garden that has been built up with concrete.

Winter snuck up on us and we left some rubble on the soil.

Early this spring there was what I thought were lots of weeds growing on the rubble covered soil and when I went to weed I noticed some buds on one of the 'weeds' and liked the colour so decided to leave that one!




It turned out to be a beautiful snap dragon (my Mum identified it for me!) with gorgeous magenta flowers so when we got round to carrying on the clear up I dug up the plant, which only had one flowering stem on it, and put it in a flower bucket with the soil it had been growing in.

I didn't really expect it to survive but it's now got about a dozen flowering stems on it and the bees seem to love it.

I don't know what sort of snap dragon it is and don't know anything about it!

Can I split the roots and pot onto a couple of new pots? If yes, is it best to do this when it finishes flowering?

If I leave it in it's current pot, will it just keep flowering each year?

Sorry for all the newbie questions! I have absolutely no experience with flower growing at all!