The Center for Home Gardening building is now open to the public! Get your gardening questions answered by our expert staff and Master Gardener volunteers at the Plant Doctor Desk, or check out our houseplant display and other home gardening resources! Be sure to also take a stroll through our 23 outdoor demonstration gardens, which includes a vegetable and fruit garden, cut flower garden, experimental garden, and a newly renovated native prairie garden. 

Center for Home Gardening 
Hours: Tuesday - Friday, 9 a.m. - 3 p.m.

Horticulture Answer Service
Hours: Monday – Friday, 9 a.m. – 12 p.m.
Phone #: 314-577-5143

Plant Information

Website Updates

Our website is currently being updated to the new layout. The formatting on some pages may be affected. 

Plastic Pot Recycling Update - 2022

We regret to report that the Plastic Pot Recycling program has been cancelled. Garden centers that have had pot recycling collection trailers in the past are no longer accepting garden plastics. Please see the Plastic Pot Recycling: Update and Perspective blog entry for more information about the program's cancellation. Additional questions about pot recycling can be submitted to the Green Resources Info Service at

Plants of Merit

Plants of Merit are plants selected for their outstanding quality and dependable performance in the Midwest in the categories of annuals, bulbs, edibles, houseplants, perennials, shrubs, trees and vines.

What's In Bloom at the Garden



September Gardening Tips

  • Except tulips, spring bulbs may be planted as soon as they are available. Tulips should be kept in a cool, dark place and planted in late October. 
  • Perennials, especially spring bloomers, can be divided now. 
  • Cool-season lawns are best fertilized in the fall. Make up to 3 applications between now and December. 
  • Pinch off any young tomatoes that are too small to ripen. This will channel energy into ripening the remaining full-size fruits. 
  • Autumn is a good time to add manure, compost or leaf mold to garden soils for increasing organic matter content.  
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