Ryan Park, Wyoming, sits in USDA hardiness zone 5a — a band that supports both cool-season staples and warm-season crops chosen to fit the local frost window.
Reliable performers under these conditions include pumpkin, blackberry, lavender, and zucchini; what your own ground favors still comes down to its soil, sun, and drainage.
Even in Ryan Park, no two yards are alike.
A low spot, a south-facing slope, or a stand of trees moves the frost date and sun across a single Ryan Park lot. Enter your address and we'll score 1,086 plants against your land's actual soil, sun, and frost.
We read public map data around Ryan Park — soil, climate, flood, and parcel records. How we handle your address.
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Ryan Park — the short answer
Ryan Park, Wyoming: USDA zone 5a, about 93 days between hard freezes, across 1K acres of town.
- USDA zone
- 5a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Jun 8
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Sep 9
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~93
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 1K acres
- US Census TIGER/Line 2025
Every figure names the dataset it came from. Hard-freeze dates are this town’s own 28°F normals: light frosts run a few weeks past them, and tender transplants usually wait 2–3 weeks after the last hard freeze.
Hardiness Zone Range
Zone 5a is Ryan Park's average, not your lot's — a low corner or a tree line moves it. Against Ryan Park's 93-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Ryan Park
Each reading below is measured for Ryan Park itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredRyan Park runs about 93 days between hard freezes — a short growing season.
Long-maturing crops like melons, sweet potatoes, and winter squash can run out of runway before the first hard freeze, ripening late or not at all.
Lead with fast-maturing varieties, and stretch the season on both ends with cold frames, low tunnels, or a greenhouse.
NOAA 1991–2020 Climate Normals
Winter hardiness
MeasuredRyan Park sits in USDA hardiness zone 5a.
The zone sets which perennials, shrubs, and fruit trees live through an average winter here — a plant rated for a colder zone is a safe bet, one rated warmer needs winter protection or gets treated as an annual.
Match perennials and fruit to the zone before you buy, so nothing you plant is a gamble against the cold.
USDA PHZM 2023
The kind of country Ryan Park is in
Ryan Park sits in the Southern Rockies — EPA Level III, inside the wider Northwestern Forested Mountains. That is read at Ryan Park's own centroid, and it is not what its county reads: Carbon County is mostly Wyoming Basin. The wider page above you is answering a different question about different ground.
What Grows in Ryan Park
Every plant below cleared Ryan Park's own zone 5a and its 93-day season. Each card opens that plant's Wyoming profile. How we score.
Is it too late to plant in Ryan Park?
Usually not — gardeners here simply switch what goes in the ground as the season moves. Cool-season crops can go in from around May 11; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Jun 8 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Sep 9 — long-season crops need about 90 days of runway, quick greens only 30. In a season this compact, fast finishers and cold-hardy greens do the late work, and garlic tucked in before the freeze repays you next summer.
What's on the federal record near Ryan Park
Closest first, within ~10 miles of Ryan Park. Listing isn't leaking, and distance isn't exposure.
- 16-081-20bad01Nitrate · 2.7 mi
- The PlaceUnderground Storage Tanks · 3.6 mi
- Raven GroupMining · 6.8 mi
- Waterloo Prospect 1Mining · 8.2 mi
- 16-079-19cbb01Nitrate · 8.9 mi
- Unnamed ProspectMining · 9.3 mi
- Bellamy Lake copper prospectMining · 9.6 mi
Measured from Ryan Park's center, not your beds. Run your own address for what's upwind of you specifically.
Environmental Intelligence
The counts behind that headline — every source type on the record near Ryan Park.
Total Sites
9
within ~10 miles of Ryan Park
Risk Level
Low
Highest-severity
4 mining sites (prospects, none worked)
Sources Checked
within ~10 miles of Ryan Park
Severity Distribution
within ~10 miles of Ryan Park
Highest-Severity Sites
Know Before You Grow
- •Mine waste leaches heavy metals. Test for lead, arsenic and cadmium before growing food here.
- •On a private well, test for nitrates: above 10 mg/L the water needs treatment before irrigating.
- •Underground tanks leak petroleum as they age — near a former filling station, test the soil.
Check your specific parcel in Ryan Park
Get exact proximity distances to contamination sources for your specific parcel — plus soil, sun, drainage, and 1,086 plant recommendations.
25+ data sources read at your address, not the Ryan Park average
Your land is one point inside Ryan Park
Everything above resolves to Ryan Park as a whole — one PHZM band and one 28°F frost record, read across 1K acres. Your parcel is one point inside that footprint. Slope, tree cover, a low spot that pools cold air, and what is in the soil are all resolved at the address, and none of them are visible at town scale. That is the honest boundary of this page, and the reason the next step is a reading of your own ground rather than a better local average.
Your Lot vs the Ryan Park Average
Ryan Park Average
- ●USDA Zones 5a, averaged across Ryan Park
- ●One soil character for all of Ryan Park
- ●Frost dates read at Ryan Park's scale: Jun 8 to Sep 9
YOUR Parcel
- ✓Your exact zone, not Ryan Park's 5a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Ryan Park
Pull a site-specific report for your exact address in Ryan Park, Wyoming — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Ryan Park averages can't show:
We read public map data around Ryan Park — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Ryan Park average
How we know this about Ryan Park
The datasets: hardiness from the USDA ARS Plant Hardiness Zone Map 2023, read at this town’s own centroid; hard-freeze dates from NOAA 1991–2020 28°F normals at Ryan Park’s own record; boundaries and acreage from US Census TIGER/Line 2025; the contamination records from the federal sources named in their beats above. Soil is not read at town grain anywhere on this page — there is no town-resolution survey in our data, which is why you will find no soil grid here rather than a statewide one wearing a local label. The resolution ledger below names every figure this page inherited.
Common questions about Ryan Park
When does frost risk typically end in Ryan Park?
The last hard freeze (28°F) in Ryan Park typically lands around Jun 8, per NOAA 1991–2020 climate normals — earlier than the light-frost dates most charts quote. That marks the hard freeze, not the last light frost — lighter frosts keep biting past it, which is why tender transplants here wait until about Jun 29.
When is the first frost in Ryan Park?
The first hard freeze (28°F) in Ryan Park typically arrives around Sep 9, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Aug 26, so the watching starts about Aug 10 — about 93 days after the spring freeze cleared.
How long is the growing season in Ryan Park?
Measured between 28°F hard freezes, Ryan Park sees about 93 frost-free days — roughly Jun 8 through Sep 9, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Jun 29 to Aug 26, about 58 days.
Is the soil safe to grow vegetables in Ryan Park?
The federal record around Ryan Park is light — 9 documented sites across the 9 federal source types we checked, mostly Mining entries (4), the nearest Nitrate record about 2.7 miles out — and proximity to a documented site is information, not a diagnosis of any one yard. Growing food here starts from a strong position; a soil test before new food beds settles any site-specific question.
How do gardeners stretch the season in Ryan Park?
With about 93 frost-free days between hard freezes, Ryan Park rewards the classic extension moves: floating row cover buys roughly two to four extra weeks at each shoulder — on this season that is a working window nearer 121 to 149 days — and cold frames or low tunnels buy more. Starting transplants indoors ahead of the Jun 8 hard-freeze normal stretches the season without touching the calendar.
Everything above is measured at Ryan Park's scale — its 5a band and its 93-day season. Your yard writes its own version of Ryan Park's numbers: we read soil, sun, drainage and frost at your exact address. Try it for 14 days — no card required.
What this page reads at Ryan Park’s own scale
6 of the readings below were taken at Ryan Park's own scale — its own ~93-day season between 28°F freezes, the 1,333 acres it covers and 9 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Ryan Park's own USDA hardiness band, zones 5aUSDA PHZM 2023
- Ryan Park's own 28°F hard-freeze dates, about Jun 8 and Sep 9 and the ~93-day span between themNOAA 1991–2020 Climate Normals
- 9 documented contamination sites on the federal record near Ryan Park, the closest Nitrate record about 2.7 miles out from the town centreFederal environmental registers
- Ryan Park's boundary and the 1,333 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 5a and a ~93-day seasonGrowable Ground crop-matching engine
- Ryan Park sits in the Southern Rockies — not the ecoregion its county mostly readsUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Ryan Park's 1,333 acres read through its county's SSURGO summaryfrom Carbon County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Carbon County
- The growing challenges every Wyoming grower plans around — written at state scale, so they stay on the state guidefrom Wyoming
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Carbon County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Ryan Park's 1,333 acreswhy one lot differs from the next →
- Which side of Ryan Park you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 1,333 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Nitrate record about 2.7 miles out, measured from the town centrehow we read the record →
- Where cold air settles, which slopes face the sun, and which way the wind runs on your own ground — measured at your address, and averaged away by any Ryan Park-wide figureread your own land →
More in Wyoming
Wider growing context
What grows across WyomingRyan Park sits outside our named growing regions, so Wyoming as a whole is its closest context here.
Nearby growing guides