Bewildered by the enormous number of products that are marketed for “improving” your garden soil? Wonder which ones will help your plants, which are cost effective and, which ones come from sustainable sources?

Learn about common soil additives from Master Gardener Muriel Nesbitt at her presentation, “Soil Amendments: Where Do They Come From, and Are They Sustainable?” set for noon-1 p.m. Thursday, Aug. 26, on Zoom.

To join by compute, got to tinyurl.com/GTnesbitt; or, to join by phone, call 253-215-8782 (meeting ID: 918 2268 7684, passcode 673997).

Nesbitt, who earned her PhD in genetics from the University of Washington and is a community leader teaching courses, giving lectures and sharing her knowledge, will discuss what soil additives are supposed to do for your garden, what they really do, and where they come from. Utility and sustainability of soil amendments is the focus of her class.

Nesbitt taught biology at the University of California- San Diego for 35 years. She directed the Clallam County Master Gardener program from 2009-2012 and received the Golden Trowel award attaining Lifetime Achievement status with the Clallam County Master Gardeners.

Her interests include using science, experience, and experiment in her own garden to grow nutritious food and flowers for bees.

Sponsored by WSU Clallam County Master Gardeners, the Green Thumbs Garden Tips education series seeks to provide home gardeners with education on research-based sustainable garden practices in Clallam County. The series is offered via streaming presentations from noon-1 p.m. the second and fourth Thursday each month through October (in November, December and January, one program is offered).

For more information, call 360-565-2679.