Being a nautical man, it's not surprising that Frank Potts chose to plant a vineyard in a place that for a week or two occasionally becomes an inland sea. But how this natural bequest has been used by succeeding generations of the Potts family is more to do with ingenuity than miracles.
Bleasdale's vineyards are situated on the fertile flood plains of the Bremer River, which runs through Langhorne Creek. The region still experiences natural floods from the high rainfall that gushes out of the Adelaide Hills and heads towards the sea from time to time. It occurred to Frank that with the addition of floodgates across the river he could control the water for a short period and give his vines a deep soaking drink just before the parching Australian summer.
The other benefit is that the deep alluvial sandy loam soils have been built up by successive deposits of silt and nutrients which are left behind after each flood - a process which is about as close to Mother Earth's seasonal rhythms as growing grass.
Langhorne Creek provides classic conditions for growing a range of quality red and white wine grapes.
Like the Barossa and McLaren Vale it has relatively modest natural rainfall and hot summers which limit crop vigour and yield and create a healthy environment where herbicides and fungicides only need to be used sparingly.
Similar to famous international maritime regions such as Bordeaux and Napa Valley, Langhorne Creek benefits from cool evening sea breezes which creates slow, steady grape ripening and intense flavour development.
The resultant red wines have fine tannin and acid structure for complexity and longevity while the white wines of the region have texture and length.