Mycologists, gourmands, truffle pigs, Deadheads—everybody loves a good mushroom. And no wonder; how many things give you the chance to gaze upon the face of God and taste good on a pizza? Which is why you owe it to yourself to check out the Mycological Association of Washington, D.C.’s Washington Mushroom Fair. There’ll be lots of useful hints on mushroom identification and cultivation—handy, ’cause God made some of them poisonous, no doubt to thin the roaming herds of jam-band fans—as well as mushroom-cooking demonstrations. Plus there’ll be experts on hand to identify those odd-looking specimens indigenous to your own back yard. You know, in case you’ve been considering bagging them and peddling them to the neighborhood Phish head. The fungus begins at noon at Brookside Gardens’ Visitors Center, 1800 Glenallan Ave., Wheaton. Free. (301) 907-3053. (Michael Little)