So a couple of weeks ago we planted out a tahitian lime, satsuma mandarin, and meyer lemon. They're spaced about 1.5 metres apart, and I've since realised that we were a bit over zealous and should have researched it first because they're probably too close. Plus apparently I shouldn't have lemon near the other two because of the danger of cross pollination and ending up with fruit full of seeds.
So, how far apart do you space your citrus? I'm finding people saying anywhere from 4m which is a bit of a worry! Should I move the lemon? I'm not even sure if the tahitian lime is citrus, but apparently it can be?
We've also done the same with some apples - a granny smith and braeburn. They've got about 2m between them but I get the impression that's too close too, but I'm not really finding any straight answers online. Help? :)