Course Description and Credit Information

This webinar discusses myths about urban trees and soils by showing examples of how and why these common design thoughts are incorrect.

The following issues are discussed: organic matter versus compost need, trees use organic matter, mycorrhiza treatments and landscape soil, sand in soil mixes for landscape areas versus golf and athletic turf, soil screening, soil installation, tree grates protect the tree, all urban soils are horrible, redefining usable soil, salt damage, and high pH must be lowered. Ways to design differently to avoid these urban tree and soil myths are discussed.


Learning Objectives:

1. Understand the critical aspects of soil
2. Comprehend the common myths around urban trees and soils
3. Comprehend how to design differently to prevent the damage done by common design myths


General Course Information







Pre-recorded webinar


Created in partnership with DeepRoot and James Urban, FASLA


US State Approvals

LA CES Approved


States: AK, AL, AR, CT, DE, IA, IL, IN, KS, KY, LA, MD, MO, MS, NE, NH, NM, OH, OK, OR, PA, SC, TN, TX, UT, VA, WA, WI, WV, WY


North Carolina


New Jersey




New York
***Each licensee is responsible for determining if this course meets the state requirements


GA, MN, and SD 
**Explanation: There is no process to get courses pre-approved in your state, but there should be no issues getting this course approved.
If not approved, we will exchange it for another course or provide a full refund.

**See explanation


Canada Provinces and Territories

British Columbia

Yes, per reciprocity with LA CES


Yes, per reciprocity with LA CES

Course curriculum

  • 01

    Debunking Myths about Urban Trees and Soils

    • Watch the Video

  • 02

    Debunking Myths about Urban Trees and Soils Quiz

    • Take the Quiz

  • 03

    Debunking Myths about Urban Trees and Soils Survey

    • Take the Survey

  • 04

    Provided by DeepRoot

    • DeepRoot Products

    • Silva Cell Tech Sheet

    • Silva Cell Water Cycle

    • The DeepRoot Experience