Mission Canyon, California, sits in USDA hardiness zone 11a — room for a real mix of vegetables, fruit, and perennials matched to the local frost calendar.
Crops well matched to these conditions include artichoke, starfruit, allspice, and cabbage — though what thrives on any one site still turns on its specific soil, sun, and drainage.
Even in Mission Canyon, 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 Mission Canyon 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 Mission Canyon — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Mission Canyon — the short answer
Mission Canyon, California: USDA zone 11a, no 28°F killing freeze on record — the season is year-round, across 1K acres of town.
- USDA zone
- 11a
- USDA PHZM 2023
- Killing freeze
- None on record
- NOAA RCC ACIS 1991–2020, this town’s own record
- Town area
- 1K acres
- US Census TIGER/Line 2025
Every figure names the dataset it came from. The year-round finding is measured — a 30-year record with no 28°F killing freeze in it — never inferred from missing dates.
Hardiness Zone Range
Zone 11a is Mission Canyon's average, not your lot's — a low corner or a tree line moves it. Against Mission Canyon's no killing freeze on record, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Mission Canyon
Each reading below is measured for Mission Canyon itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Winter hardiness
MeasuredMission Canyon sits in USDA hardiness zone 11a.
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 Mission Canyon is in
Mission Canyon sits in the Southern California/Northern Baja Coast — EPA Level III, inside the wider Mediterranean California. That is read at Mission Canyon's own centroid, and it is not what its county reads: Santa Barbara County is mostly Central California Foothills and Coastal Mountains. The wider page above you is answering a different question about different ground.
What Grows in Mission Canyon
Every plant below cleared Mission Canyon's own zone 11a. Each card opens that plant's California profile. How we score.
What's on the federal record near Mission Canyon
Closest first, within ~10 miles of Mission Canyon. Listing isn't leaking, and distance isn't exposure.
- SANTA BARBARA BOTANIC GARDENBrownfields · 2300 ft
- CACHUMA OPERATION & MAINTENANCE BOARDBrownfields · 0.8 mi
- CITY OF SANTA BARBARA-CATER PLANTBrownfields · 0.8 mi
- MARK GHAZALBrownfields · 0.8 mi
- SANTA BARBARA MUSUEM OF NATURAL HISTORYBrownfields · 1.0 mi
- GOOD MANAGEMENTBrownfields · 1.1 mi
- JEFF WEINDLING PAINTINGBrownfields · 1.1 mi
- PEABODY CHARTER SCHOOLBrownfields · 1.2 mi
- SAN ROQUE CATHOLIC SCHOOLBrownfields · 1.2 mi
- 004N027W09Q001SNitrate · 1.3 mi
- AMERICAN DRY CLEANERSBrownfields · 1.3 mi
- CVS PHARMACY # 9824Brownfields · 1.3 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Mission Canyon'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 Mission Canyon.
Total Sites
1,516
within ~10 miles of Mission Canyon
Risk Level
Elevated
Highest-severity
3 Superfund sites (none NPL-listed)
Sources Checked
within ~10 miles of Mission Canyon
Severity Distribution
within ~10 miles of Mission Canyon
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Mission Canyon, Brownfields runs higher than the national average — 1,046 sites within ~10 miles of Mission Canyon. It's not cause for alarm — it's worth knowing, and there's a sensible way to grow around it.
Brownfields: Brownfield sites are former commercial or industrial properties where legacy soil contamination (heavy metals, PAHs, petroleum compounds) may persist.
Check EPA brownfield remediation status — many sites have completed cleanup with institutional controls.
Check your specific parcel in Mission Canyon
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 Mission Canyon average
Your land is one point inside Mission Canyon
Everything above resolves to Mission Canyon 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 Mission Canyon Average
Mission Canyon Average
- ●USDA Zones 11a, averaged across Mission Canyon
- ●One soil character for all of Mission Canyon
- ●State-average frost dates
YOUR Parcel
- ✓Your exact zone, not Mission Canyon's 11a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Mission Canyon
Pull a site-specific report for your exact address in Mission Canyon, California — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Mission Canyon averages can't show:
We read public map data around Mission Canyon — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Mission Canyon average
How we know this about Mission Canyon
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, with the labelled statewide window where none resolves; 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 Mission Canyon
Is it too late to plant in Mission Canyon?
No — Mission Canyon has no 28°F killing freeze in the 30-year station record, so the growing season is year-round and there is no last-frost date to wait for. Planting is paced by rainfall, heat and daylength instead of by frost: start heat-lovers any month, and time cool-season crops (lettuce, brassicas, peas) for the cooler, wetter half of the year or for higher ground. Succession sowing every few weeks works all year, so the limit is what you can keep watered and harvested, not the calendar.
When does frost risk typically end in Mission Canyon?
It doesn't — Mission Canyon records no 28°F killing freeze at all across the 1991–2020 station record, so there is no spring frost date to plant after. Cold still matters with elevation: the higher you garden, the cooler the nights, and a few tropical crops sulk below about 60°F even where they never freeze.
How long is the growing season in Mission Canyon?
Year-round — the 1991–2020 station record for Mission Canyon contains no 28°F killing freeze, so there is no season to measure between freezes. What paces planting instead is heat, rainfall and daylength: the hottest, wettest stretch is the hard part for cool-season crops, not winter. Elevation is the one real exception — the higher you garden, the colder the nights get.
Is the soil safe to grow vegetables in Mission Canyon?
The federal record around Mission Canyon is a meaningful one — 1,516 documented sites, mostly Brownfields entries (1,046), the nearest Brownfields record about 0.4 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.
Everything above is measured at Mission Canyon's scale — its 11a band and its no killing freeze on record. Your yard writes its own version of Mission Canyon'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 Mission Canyon’s own scale
6 of the readings below were taken at Mission Canyon's own scale — the 1,158 acres it covers and 1,516 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Mission Canyon's own USDA hardiness band, zones 11aUSDA PHZM 2023
- No 28°F killing freeze in the 30-year station record covering Mission Canyon — a year-round growing seasonNOAA Regional Climate Centers ACIS, 1991-2020
- 1,516 documented contamination sites on the federal record near Mission Canyon, the closest Brownfields record about 0.4 miles out from the town centreFederal environmental registers
- Mission Canyon's boundary and the 1,158 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear Mission Canyon's hardiness zoneGrowable Ground crop-matching engine
- Mission Canyon sits in the Southern California/Northern Baja Coast — not the ecoregion its county mostly readsUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Mission Canyon's 1,158 acres read through its county's SSURGO summaryfrom Santa Barbara County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Santa Barbara County
- The growing challenges every California grower plans around — written at state scale, so they stay on the state guidefrom California
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Santa Barbara County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Mission Canyon's 1,158 acreswhy one lot differs from the next →
- Which side of Mission Canyon you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 1,158 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Brownfields record about 0.4 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 Mission Canyon-wide figureread your own land →