11 am to 1 pm Thursday, Friday, Saturday, April 18-20, Southwestern Illinois College @ Belleville Horticulture Club Plant Sale. Cash only. The only info I could find is here and there’s no location information other than Belleville campus.

Missouri Wildflowers Nursery is at Kirkwood Farmers Market 8 am to 4 pm Saturdays, April 20th & 27th, May 25th, June 1st. Order by Monday before Saturday for pick up or shop from what they bring.

9 am to Noon Saturday, April 20th, Green Center Plant Sale, University City

9 am to Noon, Saturday, April 20th, Native Plant & Native Plant Seed Swap in St. Charles MO at 10 Number One Green Dr

9 am to 4 pm April 26th St. Louis Community College’s Meramec Botanical Society Plant Sale. Herbs, natives, annuals, perennials and vegetables. $3 to $12. Cash or check. Parking Lot K @ 11333 Big Bend Road, Kirkwood.

9 am to 5 pm April 26th St. Louis Herb Society Herb Sale at Missouri Botanical Garden, parking lot

8 am to 1 pm April 27th Lincoln County Mo Master Gardeners Plant Sale, University of Missouri Extension, 880 W College, Troy. Annuals, Perennials, Natives, Vegetables, Herbs, Bulbs, Garden Accessories. Cash only.

8:30 am April 27th Webster Groves Herb Society Herb Sale at Congregational Church of Webster Groves

9 am April 27th Olivette In Bloom Native Plant Sale

April 27th-28th  U-City in Bloom Plant Sale. 9 am to 1 pm Saturday & 11 am to 1 pm Sunday. Heman Park Community Center, University City

Noon April 27th Heartland Conservancy Spring Native Plant Sale at Clinton Hills Conservation Park, Swansea IL

10 am to 2 pm April 28th Partners for Native Landscaping Native Plant Fair at Beyond Housing, Pine Lawn.

Noon to 2 pm April 28th St. Charles County Master Gardeners Spring Plant Sale at University of Missouri Extension St. Charles County. Vegetables, perennials, natives, herbs and annuals.

May 3rd, 4th, 5th Earth Dance Organic Farm Plant Sale, Ferguson

9 am to 1 pm May 3rd Montgomery County IL Master Gardener Plant Sale @ Mt. Moriah Lodge 51, Hillsboro IL

8:30 am to 12:30 pm May 4th Webster Groves Women’s Garden Association Plant Sale, First Congregational Church, Webster Groves

9 am to 5 pm May 4th West County Daylily Club Sale at Missouri Botanical Garden. Garden admission free to St. Louis City and County residents on Wednesday and Saturday mornings.

9 am to 1 pm May 4th Shaw Nature Reserve Wildflower Market

9 am to 2 pm May 4th-5th Tower Grove East Community Garden Plant Sale at 3303 Sidney

10 am to 2 pm May 5th Feed the People Garden Project Plant Sale in Bevo Neighborhood.: Vegetables, Herbs, Flowers

8 am to Noon May 11th Mississippi Valley Garden Club Plant Sale at Alton-Wood River Sportsmen’s Club, 3109 Godfrey, Godfrey IL

9 am May 11th Seed St. Louis Summer Seedling Sale: Veggies, Herbs, Annuals $3.50 each: Basil, Egglplant, Helenium Amarum, Jalapenos, Parsley, Sweet Pepper, Tomatillo, Tomatoes. Perennials $6 each: Lavender Munstead, Mountain Mint, Rhubarb, Sea Kale, Sorrel, Wild Arugula.

9 am to 3 pm May 11th Franklin County Mo Master Gardeners Plant Sale at JC Penny Parking Lot, Washington MO

9 am to 5 pm May 11th St. Louis Hosta Society Show and Sale at Missouri Botanical Garden. Garden admission free to St. Louis City and County residents on Wednesday and Saturday mornings.

10 am to 2 pm May 11th Missouri Prairie Foundation Native Plant Sale at Wild Bird Sanctuary, Valley Park. $8-$12 entrance fee.

May 18th Wild Ones Illinois Prairie Chapter Native Plant Sale at Carlock, McLean County IL

8:30 am to 1 pm May 25th Macoupin County IL Master Gardener Plant Sale @ Macoupin County Historical Society, Carlinville IL

9 am to 5 pm May 25th Metropolitan St. Louis African Violet Council Show and Sale at Missouri Botanical Garden. Garden admission free to St. Louis City and County residents on Wednesday and Saturday mornings.

9 am to 5 pm June 15th Carnivorous Plant Society Show and Sale at Missouri Botanical Garden. Garden admission free to St. Louis City and County residents on Wednesday and Saturday mornings.

9 am to 5 pm June 22nd Kimmswick Visitor Center Daylily Sale, Jefferson County Mo

July 20th-22nd Shaw Cactus & Succulent Society Cactus & Succulent Sale, St. Louis County

9 am to 5 pm August 3rd Greater St. Louis Iris Society Iris Sale at at Missouri Botanical Garden. Garden admission free to St. Louis City and County residents on Wednesday and Saturday mornings.

9 am to 5 pm August 17th Missouri Botanical Garden Daylily Association Plant Sale at Missouri Botanical Garden. Garden admission free to St. Louis City and County residents on Wednesday and Saturday mornings.

Noon to 5 pm August 18th Orchid Society of Greater St. Louis Auction at Missouri Botanical Garden. Garden admission fee required.

3-7 pm September 6th Shaw Nature Reserve Fall Wildflower Market

9 am to 5 pm September 7th Gateway West Gesneriad Society Show and Sale at Missouri Botanical Garden. Garden admission free to St. Louis City and County residents on Wednesday and Saturday mornings.

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