Generally — Most Areas
daikon radish (zones 2-11) partially overlaps with Colorado (3a-7a). It can grow in zones 3-7 within the state.
Your yard isn't the whole zone.
Colorado spans zones 3a-7a, but your yard has its own microclimate — slope, trees, and low spots shift frost and sun across a single parcel. Enter your address and we'll score daikon radish against your land's actual soil, sun, and frost.
We read public map data for this spot — soil, climate, flood, and parcel records. How we handle your address.
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Zone Comparison
Daikon Radish Needs
- USDA Zones: 2-11
- Soil pH: 4.3 - 8.3
- Sun: Full Sun
- Drainage: well (dry spells)
- Frost-Free Days: 50+
Colorado Has
- USDA Zones: 3a-7a
- Last Frost: Apr 15 - Jun 15
- First Frost: Aug 25 - Oct 15
- Annual Rainfall: 7-20 inches
- Common Soils: Sandy loam, Clay loam, Alkaline caliche
Plant Zone Range (zones 2-11)
Preferred Soil pH
Plant data: USDA PLANTS Database / plant_species_v5.csv. State data: USDA ARS PHZM 2023, NOAA Climate Normals, NRCS SSURGO.
When to Plant Daikon Radish in Colorado
The frost window
Across Colorado, the last spring frost clears between Apr 15 and Jun 15, and the first fall frost lands between Aug 25 and Oct 15 (NOAA Climate Normals 1991-2020). Counting from the latest last frost to the earliest first frost, that's a 71-day window you can count on — up to 183 days on a mild site in a kind year.
Frost tenderness
Daikon Radish is frost-tender — its listed minimum temperature is 50°F (USDA PLANTS Database) — so set plants out after the last frost has cleared your local site, not the state's earliest date.
Days to maturity vs. the window
At 60 days to maturity (USDA PLANTS Database), one crop fits Colorado's 71-day dependable window with 11 days of margin — plant at the front of the window to keep that cushion.
Timing tuned to sub-state frost dates — Lake 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.
Growing Season Fit
Zone compatibility says you can survive winter here. Whether the growing season is long enough — and warm enough — is a different question.
Frost-free days
Daikon Radish wants 50+ frost-free days; a typical Colorado site sees ~190 (NOAA Climate Normals). That leaves comfortable headroom for succession planting.
Growing degree days
Daikon Radish needs ~1000 GDD (base 50°F) to ripen. The state median runs ~3500 GDD (USDA NRCS county aggregates), so Colorado's typical season clears that easily.
Climate aggregates derive from USDA NRCS county-level hardiness data + Cornell CALS Extension GDD-by-region tables + MSU Extension chill-hours-by-zone (1991-2020 NOAA Climate Normals baseline).
Soil + Drainage Fit
Daikon Radish likes near-neutral soil (pH 4.3-8.3). 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
Whether daikon radish is safe to eat from Colorado soil is a block-by-block question, not a town-wide one — 29,759 documented contamination sites mean levels spike on some parcels and not the one next door, so only a test on your address settles it.
Check your parcel → Source: USDA NRCS SSURGO + EPA/state contamination databases.
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.
Daikon Radish in Colorado — Quick Answer
- Verdict: Generally — Most Areas
- Plant Zones: 2-11 (USDA PLANTS Database)
- State Zones: 3a-7a (USDA ARS PHZM 2023)
- Growing Season: Apr 15 - Jun 15 to Aug 25 - Oct 15 (NOAA Climate Normals)
- Days to Maturity: 60 days
What Else to Consider
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
Build the irrigation first — drip plus mulch makes a high-desert garden run on remarkably little water.
High altitude UV and temperature swings stress plants
Harden transplants gradually, shade-cloth their first high-sun week, and keep row covers handy for cold nights.
Very short growing season at elevation (60-90 frost-free days above 8,000 ft)
Above 8,000 feet, count your real frost-free days and choose varieties bred to finish inside them.
Alkaline soils (pH 7.5-8.5) limit acid-loving plants without amendment
A soil test tells you your actual pH — grow acid-lovers in containers of amended mix while the native ground grows everything else.
Growing daikon radish here specifically
Daikon Radish grows its edible root in the soil itself, so on any of Colorado's 29,759 documented contamination sites it can carry up lead you'd then eat.
Keep daikon radish in raised beds of screened clean soil and confirm your parcel's lead level before the first crop. How to handle it →
Timing shifts within Colorado
Colorado isn't one climate. In Lake County, the last hard freeze (28°F) holds until about Jun 2 — roughly 39 days later than the recorded state median — so plant daikon radish to your county's window, not the statewide date.
County last-freeze dates: NOAA/PRISM Climate Normals 1991-2020, 28°F threshold (earlier than the folk 32°F "last frost"). A parcel report resolves your address's own frost dates.
Pollinator + Wildlife Value
Daikon Radish draws pollinators (moderate value, USDA PLANTS Database). Planting it near vegetable beds can lift fruit set on neighboring crops.
Colorado Cooperative Extension
For Colorado-specific cultivar recommendations, planting calendars, and pest pressure for daikon radish, the canonical source is Colorado State University Extension. Their fact sheets carry the local trial data we can't generalize across 50 states.
Common Questions About Growing Daikon Radish in Colorado
When can I plant Daikon Radish in Colorado?
Colorado's last spring frost clears between Apr 15 and Jun 15, and the first fall frost lands between Aug 25 and Oct 15 (NOAA Climate Normals 1991-2020). Daikon Radish is frost-tender — its listed minimum temperature is 50°F (USDA PLANTS Database) — so wait until the last frost has cleared your specific site before planting out.
Can Daikon Radish mature before first frost in Colorado?
Yes — Daikon Radish matures in 60 days (USDA PLANTS Database), and Colorado's dependable frost-free window runs 71 days (NOAA Climate Normals 1991-2020), leaving 11 days of margin. Plant just after last frost and it ripens ahead of the first fall frost.
What hardiness zone is Daikon Radish grown in across Colorado?
Colorado spans USDA hardiness zones 3a-7a (USDA ARS PHZM 2023). Daikon Radish carries a range of zones 2-11, 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 ~190 frost-free days per year (derived from NOAA Climate Normals 1991-2020). Daikon Radish needs 50+ frost-free days, so check whether your local microclimate runs above or below the state average before settling on a planting date. In cooler counties like Lake, the freeze-free season runs shorter than the state average, so verify your own county's window.
How should I amend the soil for Daikon Radish in Colorado?
Daikon Radish prefers pH 4.3-8.3 and well (dry spells) drainage (USDA PLANTS Database). 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 Daikon Radish actually grow on my specific land in Colorado?
State-level zone + climate data is a sketch. A Growable Ground parcel report scores daikon radish against your address's exact soil pH, drainage, sun, and frost-date data drawn from USDA SSURGO, NOAA, and PRISM — not state averages.
Check your specific parcel in Colorado
State-level data is a sketch. Your Growable Ground report scores daikon radish against your parcel's exact soil, sun, drainage, and frost data — not zone averages.
Three things about your exact spot that zone averages miss:
We read public map data for this spot — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources analyzed in seconds
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 →