THURSDAY

Invasive Plant Workshop

7 p.m. in Bangor

Come learn about invasive plants and the problems they can cause on your land. The Bangor Land Trust’s invasive species workshop will feature a presentation by Steve Sader, a University of Maine instructor on forest vegetation. He will discuss how some invasive species in the forest came to Maine, and he’ll have samples. The workshop will be at the Bangor Land Trust office at 8 Harlow St. For more information, call 942-1010.

SATURDAY

Guided Nordic Trek

1 p.m. in Woolwich

Join the Kennebec Estuary Land Trust for a Nordic skiing lesson. Come to the Merrymeeting Preserve in Woolwich for ski instruction and a group outing. Chuck Mainville, who runs a Nordic ski program for local families, will be on hand to lead cross country skiers throughout the 125-acre preserve. Gentle slopes and a variety of trail lengths make it easy here to learn and improve cross country skiing skills. To register for the event, call 442-8400 or write to bkolak@kennebecestuary.org by Wednesday.

UPCOMING

Ugly Fly Tying

6:30, Jan. 28, Yarmouth

Come learn to tie ugly flies with moderator Rod McGarry and featured tier McCauley Lord, who is known for his published works: The L.L. Bean Fly Casting Handbook. Lord ties terrible-looking flies but they catch a lot of fish. Come learn why at the Sebago Trout Unlimited fly tying class. Tying gear will be available for those who need it. For more information email flyrodmcgarry@gmail.com.

UPCOMING

Winter Carnival

10 a.m., Feb. 8, Waterville

Waterville’s Winter Carnival will again take place at the Quarry Road Recreation Area off North Street. No cost. Donations go toward the trails. Activities include Nordic skiing, snowshoeing, winter bike demonstrations, sledding and dog sled rides. Local food from local restaurants will be offered, with a suggested “buck-a-cup” donation. Organizers ask that dogs be left home. For more information or to volunteer, call 680-4744.

– Send outdoor event listings to dfleming@pressherald.com