It's not really big/deep enough .... from the old stuff I've seen (recent repeats of Victorian Kitchen Garden on the telly) I reckon you need about 4 feet square and 18" deep cos they don't really use the outside foot or so... the ones they built that size had a 2 foot lantern cloche (that I want so badly it hurts) tih a few bigger plant seedlings in, their forcing hotbed frames for things like out of season carrots were about three feet deep , and they'd dug down at least a foot by the look of things, and were a minimum of 8x6, and they were stacked up about five in a line so 30x8....