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Over the past century, however, land managers have suppressed natural fire to the detriment of such iconic species as the pitch pine, which evolved to prosper in droughty, acidic and fire-prone conditions.

At the end of the project, Nathan would measure both groups to determine which was better suited for droughty conditions.

What really sticks in the craw are those August days that are droughty but heavy with humidity.

The cause of death was climate change: steadily warming and drier summers, that stressed the tree in its position atop a droughty knoll.

She sites plants according to their needs, with eucalyptus, lavender and ceanothus thriving on the droughty hillsides, and blueberries growing in the damper spots.