It's a sweet sign of spring.
The sap is running, and the Wargo Nature Center in Lino Lakes is ready to tap into it during Sunday's Maple Syrup Madness festival.
"It started 13 years ago, actually as a maple full moon event," said Deb Gallop, program supervisor at Wargo. "In 2004 we switched it to a day festival, and it's been a wonderful family event."
The event attracts an average of 100 participants, and it happens rain or shine.
But the conditions have to be perfect for maple syrup making.
"It has to be above 40 [degrees] during the day, and under 30 at night," said Jennifer Fink, marketing and visitor services manager at Anoka County Parks and Recreation. "That's what causes the sap to run. Some years are better than others, but it's always fun to teach folks about it."
All stages of the maple syrup process will be shown and demonstrated by the Nature Center's naturalists. The history of maple syrup making will be covered, dating to the 19th century.
The actual process itself hasn't changed much over the years. In the spirit of the old tradition, the sap will be collected from the maple trees, then cooked down over an open fire. But there also is an evaporator for use on-site, so participants can take in the modern-day maple syrup processes as well.