Suitable means that the soil, climate, exposure, and water availability are all conducive to winegrape growing. Because it will take five years for the vineyard he is planting to reach full production capacity, Farmer Aiden has to have far reaching vision and a bit of luck. For instance, the people who five years ago thought that Merlot was going to be a hot item and planted the red varietal, well, those folks are laughing all the way to the bank. That can't be said for those people who thought that Dry Riesling was going to be the next Chardonnay. Let's move on and say Farmer Aiden knows he wants to plant Chardonnay-a safe bet because new wine drinkers often start with Chardonnay.
Many winegrape varieties come in different clones.
All Chardonnay clones obviously produce Chardonnay grapes, but characteristics of the fruit from each clone can be substantially different. In the old days, a farmer would just go to the vineyard that produced his favorite wine and take cuttings to plant in his own vineyard. Now, thanks to science, traits of various clones have been isolated, so the farmer can make a more educated decision. Or, as in Farmer Aiden's case, be a lot more confused than his grandpa ever was. Farmer Aiden's now got a variety.