Posted: 13/07/2014 at 11:28
Oh, so they do - never come across that before!
Right - I think the kale and broccoli will need more depth than that or they'll get rocked by the wind which will cause root damage. As they get bigger I'd put a cane by each one and tie in so they're as firm as they can be. You can also top the soil up in the beds with the kale and broccoli in as much as you can as you can get hold of topsoil/compost.
The cabbages might be ok - what sort of cabbages are they?