Delve into fall mushrooms of the Northwest at the 50th annual Puget Sound Mycological Society Wild Mushroom Show exhibits, lectures, activities and displays Saturday and Sunday at the Mountaineer’s Club in Seattle. Mushrooms thrive in Western Washington’s climate, and the show is one of the largest displays of mushrooms in the U.S., with information and activities for all ages, from novices to expert mycologists.

Besides the array of more than 200 varieties of mushrooms on display, many shown in their natural settings, exhibits and vendors include photography, art, field guides, cookbooks, posters and scientific materials. Slide-show lectures throughout both days cover a wide variety of topics, including common edible and poisonous mushrooms of the Northwest, uses of mushrooms, the role of mushrooms in the ecosystem, fungi around the world and mushroom mythbusting.

Exhibits and activities for all ages feature a special feel-and-smell display for children. Bring in mushrooms from your yard to be identified; collect the entire mushroom, including underground parts if any, note the conditions where it was growing and keep specimens separate in paper bags, waxed paper or egg cartons to help experts identify them.

If you’d like to learn more, Puget Sound Mycological Society members will be on hand with information about membership benefits including classes, field trips and other opportunities to learn about safe and successful mushroom foraging.

Other fall activities this weekend include Saturday’s Kelsey Creek Farm Fair, a step back into Bellevue’s farming past. The popular annual event includes Eastside Heritage Center old-time demonstrations and activities, farm animals, entertainment by Cowboy Buck, pony rides, a pumpkin patch and tractor-pulled wagon rides by Northwest Vintage Tractor Club. Admission is free with charges for some activities; cash only. There’s no parking at Kelsey Creek Farm Park for the event; some limited neighborhood parking is available, or park at Wilburton Park and Ride or Bannerwood Sports Park to ride a shuttle to the fair.

Madeline McKenzie: mmckenzie@seattletimes.com