Back to the drawing board then.

Does mint "strangle" other plants then? The reason I ask is that my herb bed is about 3.5ft x 2.5 ft, but very deep (its a raised bed about hip height) but its totally separate from the rest of my raised beds, so I'm wondering if I were to put the mint in there, would it suffocate the rest of the herbs, or just grow like mad - the latter I can cope with as I use loads of mint.