That popped up in our property in Kirkland, Washington, final 7 days of March, 2007. Curiously, the fruiting body grew on top of card box material which was laid out to suppress weed growth. There remains to be a layer of card board visible at the base with the morel. https://laneokduk.sharebyblog.com/20203143/how-much-you-need-to-expect-you-ll-pay-for-a-good-porcini-mushrooms-uk