Can I Grow Nootka Rose in Colorado?

USDA Zones 3b-7b · Plant zone range 8-13

Unlikely — Zone Mismatch

Nootka rose (zones 8-13) does not overlap with Colorado's zone range (3b-7b). Growing outdoors is unlikely without significant protection.

One zone short — what would close it

Nootka Rose is hardy to zone 8, and the warmest ground in Colorado is zone 7 — 1 zone short. Planted in open ground it will not survive a Colorado winter. To grow it here, grow nootka rose in a container and move it under cover for the coldest weeks, or give it a greenhouse.

Season extension and overwintering under cover both work at this margin. How to buy the weeks →

Zone math from 8-13 (plant) against 3-7 (Colorado). Lift modeled by crop_engine Sprint 20B effective_zone_modifier (+2 zones) via api/fast_sections.py Unlock Engine v2.

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Your yard isn't the whole zone.

Colorado spans zones 3b-7b, but your yard sits in exactly one — and slope, tree cover, and cold-air pockets nudge it further. Enter your address and we'll score nootka rose against your parcel's actual hardiness, soil, and sun.

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Zone Comparison

Nootka Rose Needs

  • USDA Zones: 8-13
  • Sun: Part Sun
  • Picking window: ~28 days of harvest
  • Drought tolerance: Low

Colorado Has

  • USDA Zones: 3b-7b
  • Last Hard Freeze (28°F): Apr 25 - May 19
  • First Hard Freeze (28°F): Sep 29 - Oct 16
  • Annual Rainfall: 7-20 inches
  • Common Soils: Sandy loam, Clay loam, Alkaline caliche

Plant Zone Range (zones 8-13)

8a
13b
3a (Cold)13b (Hot)

Preferred Soil pH

3.5 (Acidic)7.0 (Neutral)9.0 (Alkaline)
Highlighted range: pH 6.57.0

Plant data: USDA PLANTS Database / Growable Ground plant catalog. State data: USDA ARS PHZM 2023, NOAA Climate Normals, NRCS SSURGO.

When to Plant Nootka Rose in Colorado

The frost window

Across Colorado, the last spring hard freeze (28°F) clears between Apr 25 and May 19, and the first fall hard freeze lands between Sep 29 and Oct 16 (NOAA Regional Climate Centers ACIS, 1991-2020). Counting from the latest last freeze to the earliest first freeze, that's a 133-day window you can count on — up to 174 days on a mild site in a kind year. That marks the hard freeze, not the last light frost, so tender transplants usually wait another 2-3 weeks.

Winter standing

Colorado runs as cold as USDA zone 3, and no sourced winter-hardiness floor is on record for nootka rose, so this page does not state whether it overwinters here — and gives no fall establishment date on the strength of a guess. Whether nootka rose is a permanent planting or a replant-every-spring crop for you turns on your own zone within Colorado; check its hardiness range against that before treating it as long-lived ground.

Timing tuned to sub-state frost dates — Chaffee County, not the statewide average.

Frost window: NOAA Climate Normals 1991-2020. Plant timing fields: USDA PLANTS Database. Your site's own frost dates can run earlier or later than the state range — a parcel report pins them down.

Soil + Drainage Fit

Nootka Rose likes near-neutral soil (pH 6.5-7). That's the common-ground band across Colorado's sandy loam and clay loam — a soil test confirms it for your site. Drainage matters: this plant wants well (dry spells). If your Colorado site is heavier clay or sits in a low spot, raised beds or amendment with compost solve it.

Your land, not the state average

Colorado's soils run mostly loam, but SSURGO maps the series, texture, and drainage under your exact parcel. Nootka Rose needs about 19 inches of workable depth, so it is that horizon — not the surface — you are testing for. That map unit, not the state average, decides how nootka rose performs.

Check your parcel → Source: USDA NRCS SSURGO.

Plant pH and drainage requirements from USDA PLANTS Database. Colorado soil profile from USDA NRCS SSURGO. Site-specific verification: a 30-minute soil test from your local Extension lab.

Nootka Rose in Colorado — Quick Answer

  • Verdict: Unlikely — Zone Mismatch
  • Plant Zones: 8-13 (USDA PLANTS Database)
  • State Zones: 3b-7b (USDA ARS PHZM 2023)
  • Growing Season: 28°F hard freezes about Apr 25 - May 19 to Sep 29 - Oct 16 (NOAA Regional Climate Centers ACIS, 1991-2020)

What Else to Consider for Nootka Rose in Colorado

Zone compatibility tells you about winter cold survival — but Colorado growers also need to think about:

Low annual rainfall (7-20 inches) means irrigation is essential nearly everywhere

High altitude UV and temperature swings stress plants

Very short growing season at elevation (60-90 frost-free days above 8,000 ft)

Alkaline soils (pH 7.5-8.5) limit acid-loving plants without amendment

Growing nootka rose here specifically

Colorado's soils run mostly loam (Mollisols), and whether that suits nootka rose's pH 6.5–7.0 preference comes down to your exact parcel, not the statewide picture.

Pull your parcel's SSURGO map unit, test pH, and amend toward nootka rose's 6.5–7.0 target before planting. How to handle it →

What to actually do about these — and the constraints that apply to every Colorado grower, not just nootka rose — is covered on the Colorado growing guide.

Timing shifts within Colorado

Colorado isn't one climate. In Chaffee County, the last hard freeze (28°F) holds until about Jun 12 — roughly 38 days later than the recorded state median — so plant nootka rose to your county's window, not the statewide date.

County last-freeze dates: NOAA Regional Climate Centers ACIS (1991-2020), county 28°F freeze (earlier than the folk 32°F "last frost"). A parcel report resolves your address's own frost dates.

Where in Colorado Nootka Rose Is Zone-Hardy

Nootka Rose is rated for USDA zones 813. No Colorado county reaches it. Even Mesa County, the state’s mildest winter at zone 7a, sits below the plant’s zone 8 floor — so in open ground this one needs winter protection here, or a container that comes under cover.

Across those 64 counties Colorado’s winter-low ladder runs from zone 4b in Alamosa County to zone 7a in Mesa County 2.5 USDA zones of spread, which is 25°F between the two counties’ average coldest night of the year. None of that range reaches the band nootka rose needs, so here the statewide answer really is the answer.

County hardiness zones: USDA Plant Hardiness Zone Map (PHZM) 2023, per county. Nootka Rose’s zone 813 band: USDA PLANTS / Growable Ground plant database. A parcel report resolves your address’s own zone and frost dates rather than its county’s.

Pollinator + Wildlife Value

Nootka Rose draws honeybees and native bees (high value, Growable Ground Plant Database). Planting it near vegetable beds can lift fruit set on neighboring crops. Outdoors, nootka rose can only work that bloom inside Colorado's frost window — roughly 155 days, opening after the last 28°F freeze (Apr 25 - May 19) and closing at the first (Sep 29 - Oct 16), per NOAA Regional Climate Centers ACIS, 1991-2020.

Colorado Cooperative Extension

For Colorado-specific cultivar recommendations, planting calendars, and pest pressure for nootka rose, the canonical source is Colorado State University Extension. Their fact sheets carry the local trial data we can't generalize across 50 states.

Is Nootka Rose native to Colorado?

Yes — the USDA PLANTS Database (accessed 2026-07-01) documents Nootka Rose as native to Colorado. Planting it supports the pollinators and wildlife that evolved alongside it.

Native-range data: USDA PLANTS Database state-distribution records, accessed 2026-07-01.

What pests threaten nootka rose in Colorado?

Japanese beetle is documented in Colorado, and it hits nootka rose where it counts. Here is what it actually does — and the move that beats it.

Japanese beetle

Japanese beetle

Act on thisdocumented in part of this state

Roses sit at the very top of the Japanese beetle's host list — the University of Kentucky names Rosa species among the plants most likely to be attacked, and even the wild and species roses are favored (the beetle's fondness for multiflora rose is well documented). The University of Minnesota notes the plant itself survives the feeding, but the blossoms are often ruined — the thing you grow a rose for.

What to do: Handpick beetles into a bucket of soapy water daily, in the cool of morning or evening — damaged petals and leaves release an odor that pulls in more beetles, so clearing them lowers next week's numbers. Handpick while the plant is in bloom, then drape fine netting over it once flowering is done. Skip the pheromone traps: University of Kentucky research found they draw in more beetles than they catch.

Documented range: states listed as Japanese-beetle infested · University of Kentucky Entomology, University of Minnesota Extension, National Plant Board

The full japanese beetle playbook

Only pests whose documented range and host relationship both trace to a primary source appear here — so a quiet section means we have nothing sourced to tell you, not that your garden is pest-free.

Common Questions About Growing Nootka Rose in Colorado

When can I plant Nootka Rose in Colorado?

Colorado's last spring hard freeze (28°F) clears between Apr 25 and May 19, and the first fall hard freeze lands between Sep 29 and Oct 16 (NOAA Regional Climate Centers ACIS, 1991-2020). No sourced winter-hardiness floor is on record for Nootka Rose, so this page does not state whether it overwinters in Colorado and publishes no fall establishment date for it — check its hardiness range against your own zone before treating it as a permanent planting.

What hardiness zone is Nootka Rose grown in across Colorado?

Colorado spans USDA hardiness zones 3b-7b (USDA ARS PHZM 2023). Nootka Rose carries a range of zones 8-13, so the overlap zones are where outdoor growing is most reliable.

How many frost-free days does a typical Colorado site have?

A typical Colorado site sees ~155 frost-free days per year (derived from NOAA Regional Climate Centers ACIS, 1991-2020). Nootka Rose should be matched against that window, so check whether your local microclimate runs above or below the state average before settling on a planting date. In cooler counties like Chaffee, the freeze-free season runs shorter than the state average, so verify your own county's window.

Is Nootka Rose native to Colorado?

Yes — the USDA PLANTS Database (accessed 2026-07-01) documents Nootka Rose as native to Colorado. Planting it supports the pollinators and wildlife that evolved alongside it.

How should I amend the soil for Nootka Rose in Colorado?

Nootka Rose prefers pH 6.5-7 and well (dry spells) drainage (USDA PLANTS). That sits in the common-ground band across Colorado soils — a 30-minute soil test from a local Extension lab confirms it for your specific site.

Will Nootka Rose actually grow on my specific land in Colorado?

State-level zone + climate data is a sketch. A Growable Ground parcel report scores nootka rose against your address's exact soil pH, drainage, sun, and frost-date data drawn from USDA SSURGO, NOAA, and PRISM — not state averages.

Free Report

Check your specific parcel in Colorado

State-level data is a sketch. Your Growable Ground report scores nootka rose against your parcel's exact soil, sun, drainage, and frost data — not zone averages.

Three things about your lot that Colorado nootka rose averages can't show:

Your soil pHYour frost-free days — Colorado averages 155Your sun & shade

We read public map data around Colorado — soil, climate, flood, and parcel records. How we handle your address.

25+ data sources read at your address, not the Colorado nootka rose average

Analysis by the Growable Ground research team, grounded in USDA PLANTS, USDA NRCS SSURGO, NOAA Climate Normals (1991-2020), and named Cooperative Extension sources. How we know →

Cite this dataset

Kirchick, M. (2026). Growable Ground Plant Database [Data set]. Zenodo. https://doi.org/10.5281/zenodo.21435643

Licensed CC BY-NC 4.0. DOI 10.5281/zenodo.21435643

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