The less fortunate trees, that are more stocky and sturdy, and less speedy in their climb toward the sky, are killed out in large numbers each year.

The weaker, spindly trees of the forest, which are slow growers, often are smothered out by the more vigorous trees.
Some trees are able to grow in the shade.

They develop near or under the large trees of the forest.

When the giants of the woodland die, these smaller trees, which previously were shaded, develop rapidly as a result of their freedom from suppression.

In many cases they grow almost as large and high as the huge trees that they replace.