Northern New England Home, Garden and Flower Show, Fryeburg Fairgrounds, Fryeburg. www.Home GardenFlowerShow.com. Today.

Southern Maine Daylily and Hosta Society Plant Sale, Southern Maine Community College, South Portland. 8 a.m. to noon today.

Big Garden Day, Congregation Bet Haiam, South Portland, free, cash or check for plants. 879-0028. Plant sale fundraiser; observe and help with the planting of the wheat, building of garden beds, 9 a.m. to 1 p.m. plant sale; 9:30 to 10:30 a.m. wheat planting; 1 to 5 p.m. garden bed building, today.

Planting Medicinal Herbs and Flowers for Pollinators, Camden Public Library, Camden, Free. 236-3440. Presented by Deb Soule, founder of Avena Botanicals in Freeport, 6:30 p.m. Tuesday.

Square Foot Gardening, Falmouth Memorial Library, Falmouth, $25-$40. With University of Maine Cooperative Extension, 6:30 to 8:30 p.m. Wednesday. Runs through May 25.

The Story of the American Chestnut, Coastal Maine Botanical Gardens, Boothbay, 10, $12 non-members. 633-4333. www.MaineGardens.org. With Glen Rea; registration suggested, 6:30 to 7:30 p.m. Thursday.

Plant sale, benefits South Portland Land Trust, American Legion Post, South Portland. www.SPLandTrust.com. 9 a.m. to 1 p.m. Saturday.

Green Thumb Plant Sale, Annuals, perennials, gardening supplies and more, Belfast Garden Club. 930-3562. www.belfastgarden club.org. 9 to 11 a.m. Saturday.

Plant Sale, Dyer Library, Saco. 286-2711. Hosted by Saco Bay Gardening Club, 8 a.m. Saturday.

Green Thumb Plant Sale, hosted by the Belfast Garden Club; benefits their scholarship fund, Boathouse, Belfast. www.belfastgardenclub.org. 9 to 11 a.m. Saturday.

Not-Your-Garden-Variety Plant Sale, features native plants; hardy roses, rhododendrons and other shrubs; trees; and even some hard-to-find and unique annuals and perennials. Growing information will be available, Coastal Maine Botanical Gardens, Boothbay, free. 633-4333. www.MaineGardens.org. 9 a.m. to 4 p.m. Saturday.

Plant Sale Extravaganza, University of Maine Cooperative Extension York County, Springvale. 324-2814. Annuals, perennials, vegetables, herbs, some trees and shrubs, houseplants, 8:30 a.m. to noon Saturday.

Plant Sale, People’s United Methodist Church, South Portland. 619-1509. Perennials. annuals and vegetable plants, 9 a.m. to noon Saturday.

Benefit Spring Bulb Tour at the W.P. Estate, all proceeds will benefit The MDI Community Sailing Center (www.mdisailing.org), a nonprofit located in Southwest Harbor. W.P Stewart Estate, Northeast Harbor. 244-7905. springbulbtour.org. Date subject to change for weather. Call or go online to confirm, 9:30 a.m. to 3:30 p.m. Saturday.

2011 Belfast Garden Club Green Thumb Sale, benefit for Belfast Garden Club activities in the community and scholarship fund for higher education, Belfast Boathouse, Belfast. 338-5647. Annuals and perennials, gardening supplies and more, 9 to 11 a.m. Saturday.

Plant Sale and Garden Day, School Around Us, Arundel. 967-9916. schoolaroundus.org. 8 a.m. to 2 p.m. Saturday.