Redwood, Texas, sits in USDA hardiness zone 9a — room for a real mix of vegetables, fruit, and perennials matched to the local frost calendar.
Crops well matched to these conditions include artichoke, fig, california poppy, and cabbage — though what thrives on any one site still turns on its specific soil, sun, and drainage.
Even in Redwood, 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 Redwood 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 Redwood — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Redwood — the short answer
Redwood, Texas: USDA zone 9a, about 302 days between hard freezes, across 4K acres of town.
- USDA zone
- 9a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Feb 6
- Guadalupe County normal — NOAA 1991–2020, nearest to this town
- First hard freeze (28°F)
- Dec 5
- Guadalupe County normal — NOAA 1991–2020, nearest to this town
- Days between freezes
- ~302
- Guadalupe County normal — NOAA 1991–2020, nearest to this town
- Town area
- 4K acres
- US Census TIGER/Line 2025
Every figure names the dataset it came from. No 30-year normal resolves at this town’s own centroid, so the hard-freeze dates are Guadalupe County’s — the closest measured record, labelled as such rather than passed off as local.
Hardiness Zone Range
Zone 9a is Redwood's average, not your lot's — a low corner or a tree line moves it. Against Redwood's 302-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Redwood
Each reading below is measured for Redwood itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
From county recordsRedwood runs about 302 days between hard freezes (read from Guadalupe County, the closest normal to Redwood) — close to year-round growing.
Frost is rarely the limit here; winter plantings are as real as summer ones, and the harder question is which crops shrug off the summer heat.
Grow cool-season crops through the mild winter, and choose heat-tolerant varieties for the summer beds.
NOAA 1991–2020 Climate Normals
Winter hardiness
MeasuredRedwood sits in USDA hardiness zone 9a.
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 Redwood is in
Redwood sits in the Texas Blackland Prairies — EPA Level III, inside the wider Great Plains. That is read at Redwood's own centroid rather than borrowed from Guadalupe County.
What Grows in Redwood
Every plant below cleared Redwood's own zone 9a and its 302-day season. Each card opens that plant's Texas profile. How we score.
Is it too late to plant in Redwood?
For most of the year, no — what changes is which crops still fit the days remaining. Cool-season crops can go in from around Jan 9; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Feb 6 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Dec 5 — long-season crops need about 90 days of runway, quick greens only 30. In a climate this gentle, “too late” hardly applies — the question becomes which crops prefer the cooler months ahead.
Documented around Redwood
Survey cells within 31 miles of Redwood checked for spotted lanternfly, none carrying a detection — a surveyed negative, not an absence of looking. Nearest documented record 628 miles off. What to watch for.
What's on the federal record near Redwood
Closest first, within ~10 miles of Redwood. Listing isn't leaking, and distance isn't exposure.
- COUNTRY CORNER STOREUnderground Storage Tanks · 0.5 mi
- 7-ELEVEN STORE 40562Underground Storage Tanks · 1.3 mi
- VEOLIA ES TECHNICAL SOLUTIONS WEST SOUTHWESTBrownfields · 2.1 mi
- FOOD & FUEL EXPRESSUnderground Storage Tanks · 2.1 mi
- THERMON MANUFACTURINGUnderground Storage Tanks · 2.2 mi
- RS USED OIL SERVICES INCBrownfields · 2.7 mi
- PAC N GO 903Underground Storage Tanks · 2.9 mi
- 7-ELEVEN STORE 40560Underground Storage Tanks · 3.1 mi
- PAVESTONEToxics Release Inventory · 3.1 mi
- KX-67-10-404Nitrate · 3.1 mi
- TAS ENVIRONMENTAL SERVICES LP - SAN MARCOSBrownfields · 3.2 mi
- GENLYTE THOMAS GROUP WIDE-LITEToxics Release Inventory · 3.6 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Redwood'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 Redwood.
Total Sites
294
within ~10 miles of Redwood
Risk Level
Elevated
Highest-severity
12 Toxics Release Inventory facilities
Sources Checked
within ~10 miles of Redwood
Severity Distribution
within ~10 miles of Redwood
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Redwood, two things run higher than the national average within ~10 miles of Redwood — PFAS (4 sites) and Nitrate (124 sites). Knowing it is half the work — and it's nothing a thoughtful grower can't plan for.
PFAS: PFAS (per- and polyfluoroalkyl substances) are called "forever chemicals" because they do not biodegrade.
Nitrate: Nitrate contamination primarily comes from agricultural fertilizer runoff and failing septic systems.
Test irrigation water source — this is the primary pathway for PFAS to reach garden crops.
Test well water for nitrate if you rely on a private well for irrigation (EPA standard: 10 mg/L).
Check your specific parcel in Redwood
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 Redwood average
Your land is one point inside Redwood
Everything above resolves to Redwood as a whole — one PHZM band, read across 4K acres, with hard-freeze dates borrowed from Guadalupe County’s record because no 30-year normal resolves at this town’s own centroid. 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 Redwood Average
Redwood Average
- ●USDA Zones 9a, averaged across Redwood
- ●One soil character for all of Redwood
- ●Frost dates read at Redwood's scale: Feb 6 to Dec 5
YOUR Parcel
- ✓Your exact zone, not Redwood's 9a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Redwood
Pull a site-specific report for your exact address in Redwood, Texas — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Redwood averages can't show:
We read public map data around Redwood — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Redwood average
How we know this about Redwood
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 Guadalupe County’s record, because none resolves here; 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 Redwood
When does frost risk typically end in Redwood?
The last hard freeze (28°F) in Redwood typically lands around Feb 6, 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 Feb 27.
When is the first frost in Redwood?
The first hard freeze (28°F) in Redwood typically arrives around Dec 5, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Nov 21, so the watching starts about Nov 5 — about 302 days after the spring freeze cleared.
How long is the growing season in Redwood?
Measured between 28°F hard freezes, Redwood sees about 302 frost-free days — roughly Feb 6 through Dec 5, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Feb 27 to Nov 21, about 267 days.
Is the soil safe to grow vegetables in Redwood?
The federal record around Redwood is a meaningful one — 294 documented sites, mostly Nitrate entries (124), the nearest Underground Storage Tanks record about 0.5 miles out — so a soil test before new food beds is a sensible precaution here, not a reason to hold back from growing. Remember that proximity to a documented site is information, not a diagnosis of any one yard; the contamination map shows exactly what sits where.
How do I protect my plants from frost in Redwood?
From about Nov 5 the job here turns from planting to protecting — the last start even a 30-day crop can finish. As the season closes around the first 28°F hard freeze near Dec 5 (NOAA 1991–2020 climate normals), three moves buy time: row cover or an old sheet over tender plants on still, clear nights; water the soil the afternoon before a freeze, so it holds warmth overnight; and harvest tomatoes, peppers and basil before Dec 5. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Redwood's scale — its 9a band and its 302-day season. Your yard writes its own version of Redwood'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 Redwood’s own scale
6 of the readings below were taken at Redwood's own scale — the 4,121 acres it covers and 294 documented sites around it; 5 are borrowed from a wider read, named and linked below.
Measured here
- Redwood's own USDA hardiness band, zones 9aUSDA PHZM 2023
- 294 documented contamination sites on the federal record near Redwood, the closest Underground Storage Tanks record about 0.5 miles out from the town centreFederal environmental registers
- Redwood's boundary and the 4,121 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 9a and a ~302-day seasonGrowable Ground crop-matching engine
- The ecoregion at Redwood's own centroid, the Texas Blackland PrairiesUS EPA Level III Ecoregions
- Lanternfly survey cells around Redwood checked, none carrying a detectionlydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- The 28°F hard-freeze dates — Redwood has no normal of its own, so its county's is the closest measured readfrom Guadalupe County
- Soil character — no town-scale survey exists, so Redwood's 4,121 acres read through its county's SSURGO summaryfrom Guadalupe County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Guadalupe County
- The growing challenges every Texas grower plans around — written at state scale, so they stay on the state guidefrom Texas
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Guadalupe County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Redwood's 4,121 acreswhy one lot differs from the next →
- Which side of Redwood you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 4,121 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record about 0.5 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 Redwood-wide figureread your own land →
More in Texas
Wider growing context
What grows across TexasRedwood sits outside our named growing regions, so Texas as a whole is its closest context here.
Nearby growing guides