Introduction to Bonsai Apr 19, 6-9pm. Introduction to the basic styles and principles of bonsai. Gain hands-on experience styling and potting your own bonsai. Registration. $25. web. extension.illinois.edu. University of Illinois Extension, 700 S. Airport Dr., 782-4617.

Springfield Jaycees Annual Lawnmower Clinic Apr 22, 9am-1pm. Inspection to check fi lters, change spark plugs, sharpen blades and change oil as necessary. $60. Springfi eldJaycees.net. O’Reilly Auto Parts, 699 W. Stanford Ave., 522-8528.

Woodland Wildflower and Tree Sale Apr 22-23, 9am-4pm Sat, 1-4pm Sun. Annual sale of woodland wildfl owers and trees. Free admission. lincolnmemorialgarden. org. Lincoln Memorial Garden, 2301 E. Lake Shore Dr., 529-1111.

Listen to a Master Gardener Apr 22, 10:30-11:30am. Presentation titled “Listening to a Master Gardener: Adding Native Perennials to Your Yard” by Master Gardener Sherry Park. Free. Lincoln Library, 326 S. Seventh St., 753-4900.

Earth Awareness Fair Apr 22, 1-5pm. 25th annual fair features more than 30 exhibitors, live music, hands-on activities, games, crafts, workshops, food for purchase and more. Hosted by the City of Springfi eld. Free. 789-2255. Old State Capitol, 1 Old State Capitol Plaza, 785-9363.

Planting Successions Apr 26, 12pm. Learn how to time plantings to harvest your favorite crops all season long. Free. llcc.edu. 786-4993. Lincoln Land Community College, 5250 Shepherd Road, 786-2200.

Springfield Jaycees Annual Lawnmower Clinic Apr 29, 9am-1pm. Inspection to check fi lters, change spark plugs, sharpen blades and change oil as necessary. $60. Springfi eldJaycees.net. O’Reilly Auto Parts West, 1501 W. Jefferson St., 793-1872.

Native Plant Sale Apr 29, 9am-2pm. Featuring more than 200 species of native Illinois plants. Hosted by the Illinois Native Plant Society Central Chapter. Free admission. ill-inps.org. Commodities Pavilion, Illinois State Fairgrounds, 801 Sangamon Ave., 782-6661.

Springfield Civic Garden Club May 1, 9am. Speaker Carolyn Ulrich, editor of Chicagoland Gardening magazine, presents “Great European Flower Shows.” Free. 563-940-5735. Westminster Presbyterian Church, 533 S. Walnut St., 522-4415.

Garden Palooza May 6, 8am-2pm. Annual plant sale hosted by Springfi eld Civic Garden Club features annuals, perennials, baskets, tools, garden items and more. Free admission. Barn 26, Illinois State Fairgrounds, 801 Sangamon Ave., 782-6661.

Prairie Plant Sale May 13-14, 9am-4pm Sat, 1-4pm Sun. Annual sale of prairie plants. Free admission. lincolnmemorialgarden.org. Lincoln Memorial Garden, 2301 E. Lake Shore Dr., 529-1111.

Litchfield Pickers Market May 14, Jun 11, 9am-3pm. Openair market specializes in vendors featuring items prior to 1980. Plus live music, food and more. Free. visitlitchfi eld.com. Downtown Litchfi eld, 400 N. State St., Litchfi eld, 866-733-5833.

Old Capitol Art Fair May 20-21, 10am-5pm Sat, 10am-4pm Sun. One of the most popular juried art fairs in the country. Original art, entertainment, food, children’s tent and more. Free. socaf.org. Old State Capitol, 1 Old State Capitol Plaza, 785-9363.

Spring Bird Fair May 21, 9am-4pm. Features breeders and specialty vendors offering a wide variety of birds and supplies. Hosted by Illini Bird Fanciers. $3 admission, free to ages 12 and under. illinibirdfanciers.com. Illinois Building, Illinois State Fairgrounds, 801 Sangamon Ave., 782-6661.