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Key to Identifying Common Colorado Landscape Trees – 19

Previous Steps

1b – Alternate leaf arrangement on stem — go to 18
- 18a – Leaf simple — go to 19

Current Step

19a – Thorns on stems — go to 20

19b – Thornless — go to 22

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Colorado State Extension Master Gardeners work to enhance Coloradans’ quality of life by extending knowledge-based education to local communities, helping individuals make informed decisions about plants and fostering successful gardeners while protecting neighborhood environments.

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