Garlic and in pots ?

Hi,

As usual not enouhgh space in my beds to plant everything I bought 


I've managed to get 2/3 packs of onions down and I've got one left (god knows where that's going!) and I had intended to plant the garlic in the same border but no room so do you think they would do ok in large plastic tomato pots from wilko ?

I have tried growing them too close togethere in small pots before with no success, what do you think ?