Invasive earthworms may be taking a toll on sugar maples

Invasive 'Jumping' Worms Are Now Tearing Through Midwestern

Dealing With Invasive Jumping Worms – A Gardener's Worst Nightmare

Snake worms wriggle into region, threatening maples - VTDigger

Red Wigglers - how fast reproduce as part of feed?

Crazy Worms' Threaten America's Trees And Maple Syrup : NPR

Do invasive jumping worms impact sugar maple (Acer saccharum

Predicting the Presence of Invasive Earthworms in Sugar Maple

Mattabeseck Audubon Society - Invasives

Sugar maples in peril « All In

Wild Things Blog - Archive

Maple Tree Caterpillars: Identification Guide (With Photos