Lowell Dietz will share his expertise on how to cultivate edible mushrooms at noon Thursday, Nov. 13, in the county commissioners meeting room of the Clallam County Courthouse, 223 E. Fourth St., Port Angeles.

He will explain how to make mushroom growing kits using pasteurized straw and grain spawn.

Dietz also will discuss making organic fertilizer, which he calls “Sequim Terra Preta,” using charcoal, a byproduct of straw cooking, and red wiggler worm castings.

This presentation is part of the Green Thumb Gardening Tips brown bag educational series sponsored by the Clallam County WSU Master Gardeners.

There will be no brown bag presentation on Nov. 27, Thanksgiving Day.

For more information, call 417-2279.