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Manzanita and mountain whitethorn — chaparral typical at lower elevations in California — take root in ashes and can dominate the forest.

But it’s important to try, he said, ticking off the reasons: Without restoration and resilience work, this piece of forest will likely convert to shrubland dominated by manzanita, whitethorn and chokecherry.

It showed a detail of Dromord Hill—a whitethorn bank—in an evening sun flare.

Grass has been sown, acorn and beechmast have been inserted, seeds of bramble, briar, holly, blackthorn and whitethorn have been introduced, and some saplings have been planted.

Thus we saw a hedge of whitethorn, the growth of which, however, was stunted by other wood.