We're in the SE corner of Ross-shire, a few hundred yards from the Inverness-shire border on a low-lying area on the Beauly then larger Moray Firths. About half a mile from us, inland, the ground starts rising quite sharply & Ben Wyvis at over 3,400 ft is only a few miles away to the north (currently behind cloud).
Ross-shire includes the mountainous west coast & inland, then in the east is the coastal plain & the Black Isle, which isn't black or an island
but is very fertile. Lots of big farms there & big fields, unlike the small crofts of the more upland areas.
Our soil is very good for growing - at least it has been for the 2.5 years that we've been here! But exceptionally stony. For at least a couple of hundred years until the late 1800's this area was used to gather the cattle which had been driven through the glens from the north & west along the drove roads before eventually walking them down to Smithfield market in London, there was a cattle & a sheep market here, too. That's an awful lot of dung!! 


Our growing conditions are good compared to the thin soils & harsh climate inland & to the west. Our garden, all 50x50 foot of it faces north & is extremely exposed to north winds, of course the sun doesn't yet get to 95% of it at this time of year, unfortunately
Sorry to waffle on, but to summarise the answer to the initial question - variety!
Jean.