Growing grapes: farming costs and yields

Rising wages and the push to mechanise

In many wine regions it has become harder and more expensive to find people for seasonal vineyard work. When the price of labour goes up, economics predicts that businesses will look for ways to use less of it. That is exactly what has happened: more growers now use machines for pruning, leaf removal and harvest wherever the land allows, and new vineyards are often planted in rows designed to suit machines from day one.

This is a good example of substitution: swapping one input for another when relative prices change. A machine is a big fixed cost to buy, but once owned it can cover many hectares cheaply. For a large, flat vineyard that trade often makes sense. For a small, steep plot it usually does not, which is one more reason wine from steep slopes tends to cost more.

Yield: the quality and quantity trade-off

Yield is how much fruit a piece of land produces. Europeans usually measure it in tonnes or hectolitres of wine per hectare; Americans often use tons per acre. A bulk vineyard in a warm, irrigated region might produce several times as much fruit per hectare as a top hillside site.

Many growers believe that a vine carrying fewer bunches ripens them more fully and gives more concentrated flavour, which is why famous appellations often cap yields by law. But this is a trade-off: a choice where getting more of one thing means getting less of another. Lower yields can raise quality and price per bottle, yet they also mean fewer bottles to sell, and the farming costs for the hectare stay much the same. Many of those costs are fixed: they do not shrink just because the crop is smaller.

Managing risk: insurance and spreading bets

Growers fight back in several ways. Crop insurance means paying a fee, called a premium, every year to an insurer who pays out if the harvest is destroyed. It turns a possible huge loss into a small, certain cost. Growers also spread risk by owning plots in different places, so one hailstorm cannot hit them all, and by keeping some savings to survive a bad year.

Some of the best public information on what all this costs comes from the University of California, Davis, which publishes detailed cost studies for growing wine grapes in different parts of California. They list every task from pruning to picking, with hours and costs per acre, and are a great place to see real farm budgets.

Newly planted vineyards add one more cost that is easy to forget. A young vine gives little or no usable fruit for its first few years, so a grower who plants a new block pays for land, vines, posts, wires and care for several years before earning anything from it. That is an investment: spending money now in the hope of earning more later, and it is why replanting old vineyards is a big decision.