
Free referral service · South Denver suburbs
Narrow screens: juniper and arborvitae
Side yards and narrow strips need trees that grow up, not out. Columnar junipers and arborvitae stay 3 to 5 feet wide.
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Mature sizes (CSU Extension Table 1)
| Tree | Mature size (H x W) |
|---|---|
| Rocky Mountain juniper 'Skyrocket' | 15' x 3' |
| Eastern redcedar 'Blue Arrow' | 15' x 3' |
| Chinese juniper 'Spartan' | 12' x 5' |
| Chinese juniper 'Hetzi Columnaris' | 15' x 5' |
| Arborvitae 'Emerald' ('Smaragd') | 12' x 4' |
| Arborvitae 'Degroot's Spire' | 12' x 4' |
| Arborvitae 'Green Giant' | 30' x 15' |
'Green Giant' is in the table but is a big tree, not a narrow one. CSU Extension also says that for gardeners above 6,000 feet some trees on its list are not adapted; Lone Tree and Castle Pines are both above 6,000 feet, so ask planters what they have seen do well at your elevation.
What it costs
Trees of Trail Canyon's 2026 list has Fort Collins and Techny arborvitae at $454 for 6 ft and 'Degroot's Spire' at $579 for 8 ft. Colorado Tree Farm Nursery lists upright junipers in containers and asks buyers to check current pricing for balled-and-burlapped ones. Planting a 6 ft tree on its 2026 charge list is $225. Both lists come from nurseries outside the Denver metro (Colorado Springs and Cortez), and Colorado Tree Farm Nursery quotes planting separately outside El Paso County, so treat them as a guide to the market, not a local quote.
Water needs
CSU Extension says to group evergreens with similar water needs and avoid soggy swales; all evergreens used in Colorado prefer well-drained soil.
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Sources
- CSU Extension, Evergreen Trees (fact sheet, Table 1 mature sizes)
- Trees of Trail Canyon (Cortez, CO), 2026 Retail Price List and Inventory (PDF)
- Colorado Tree Farm Nursery (Colorado Springs), 2026 Retail Tree Price List (PDF, dated 7/16/26)
- Colorado Tree Farm Nursery, Planting or Delivery Charges 2026 (PDF)
Prices come from the published lists above, not quotes. Your price depends on the trees, access and digging conditions; local companies quote after seeing the yard.