One: Seed Juniper
Juniperus monosperma
One: Seed Juniper (Juniperus monosperma) is a Colorado-native tree suited to the Colorado Front Range, rated "Recommended" on the 2024 Front Range Tree Recommendation List. It matures to about 10–20 ft tall and 10–15 ft wide, slow-growing, needs low water, and prefers full sun. Needs a dry site.
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At a glance
- Rating
- Recommended
- Botanical name
- Juniperus monosperma
- Variety / cultivar
- One: Seed
- Type
- Tree
- Mature size
- 10–20 ft tall and 10–15 ft wide
- Mature form
- Irregular / open
- Spacing / clearance
- ~15 ft of clearance
- Hardiness zones
- USDA 3–8
- Growth rate
- Slow
- Lifespan
- Long-lived
- Water needs
- low water
- Sun
- Best in full sun.
- Colorado native
- Yes
- Foliage
- Evergreen
- Soil
- loam, sandy, well drained only
- Soil pH
- 6.0–8.2
- Hail tolerance
- high
- Wind tolerance
- high
- Salt tolerance
- moderate
- Pollinator value
- low
- Tolerates
- Slopes & erosion control, Hot south- or west-facing walls
Wildlife & ecology
- Pollinator value
- low
- Deer
- Generally deer-resistant
- Native ecoregion
- shortgrass prairie, foothills
Common problems on the Front Range
- Spider mites in heat
- Phomopsis and Kabatina tip blight
- Cedar-apple rust alternate host
These are general tendencies for this group of plants on the Front Range, not a diagnosis. Many are stress-driven and preventable with good siting and watering. For a specific plant or an active problem, consult a certified arborist or your local CSU Extension office.
Planting & establishment
Water deeply every 7–10 days through the first 2 summers (less for xeric pines in heavy clay, they're prone to root rot). Winter water 1–2×/month October–March when soil is dry and unfrozen, evergreens transpire year-round. Year 3: taper to twice per month in summer; only during extreme drought thereafter.
Frequently asked questions
- Is One: Seed Juniper good for the Colorado Front Range?
- Yes, One: Seed Juniper is a well-suited tree for Colorado's Front Range, rated "Recommended" on the 2024 Front Range Tree Recommendation List.
- How big does One: Seed Juniper get?
- It matures to about 10–20 ft tall and 10–15 ft wide.
- How much room does One: Seed Juniper need?
- Give One: Seed Juniper about 15 ft of clearance from buildings, fences, and other trees so the mature canopy isn't crowded.
- What shape does One: Seed Juniper grow into?
- One: Seed Juniper typically grows into an irregular, picturesque outline that varies from plant to plant. This is the species' usual mature form, named cultivars (columnar, weeping, or compact selections) can differ, so check the specific cultivar.
- Is One: Seed Juniper hardy on the Front Range?
- One: Seed Juniper is hardy in USDA 3–8. The Colorado Front Range spans roughly USDA 4b–6a, so it is well within range.
- How much water does One: Seed Juniper need?
- It needs low water once established.
- How fast does One: Seed Juniper grow?
- One: Seed Juniper is a slow-growing tree. Growth rate depends on water and site conditions on the Front Range.
- How long does One: Seed Juniper live?
- One: Seed Juniper is long-lived, a multi-generational tree given good siting and care. Actual lifespan varies with site, water, and care.
- Is One: Seed Juniper native to Colorado?
- Yes. It is a Colorado native.
- Is One: Seed Juniper deer-resistant?
- One: Seed Juniper is generally considered deer-resistant, though no plant is deer-proof when browse pressure is high.
- Is One: Seed Juniper prone to pests or disease on the Front Range?
- One: Seed Juniper can be affected by spider mites in heat and other issues common to this group on the Front Range. These are general tendencies, not a diagnosis, many are stress-driven and preventable with good siting and watering. For a specific plant or an active problem, consult a certified arborist or CSU Extension.
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See also
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