They allow grapes to ripen longer, producing sweeter, more alcoholic wines.

The grapes there ripen easily, and the wines are often big and alcoholic.

For others, grapes may ripen individually within a cluster.

The grapes ripen early but can be prone to powdery mildew.

The grapes ripen as early as late August, and are consequently available earlier than traditional varieties.

Briefly, what happens is this: all of a year's wine is made in September, when the grapes ripen.

As grapes ripen, their natural acids turn to sugar.

The grapes ripen relatively early and are able to maintain high levels of acidity.

It's hard to think of a better place to watch the grapes ripen.

Abundant winter rain and much sunshine in the summer helps the grapes ripen easily.