Boulder County and City Street Tree Planting Guide.
Here are some of the basics when planting a tree that is “required” by the city and county of Boulder.
All plant materials must meet the following minimum size requirements:
- Medium and large deciduous trees: at least 2” caliper (measured 6” above the ground.)
- Ornamental and ﬂowering trees: 1 ½”caliper
- Evergreens: 5’ tall
- Shrubs: 5 gal. container
Tags on Trees
- Labels that identify the botanical or common name must be on all trees at the ﬁnal inspection.
- All landscape plans must comply with the current state weed and nursery lists. This means that plants on the state weed list (e.g. Russian olive) may not be planted and must be removed if they exist on the property
Please consult your specific guidelines for your job as some details can change from project to project.