"People like the visual similarity of the same family of trees planted together," he said.

He strolled slowly beneath the fruit trees they had planted together.

In one technique known as companion planting, the three crops are planted close together.

The hedges are small trees that were planted very close together.

"They were planted too close together," he said.

It was felt that the trees had originally been planted too close together.

Two or more cultivars must be planted together for successful pollination.

As in some regions of France, the vines are planted close together and not irrigated.

Or promise a rose garden - 10 bushes to be planted together in the spring, $150.

Many similar species are planted together, allowing the visitor to observe the subtle differences.