Missouri · Midwest
O'Fallon, MO
Zone-aware planting reference for O'Fallon. Population 85,040; USDA hardiness zone 6b; nearest curated zip code 63366.
- USDA zone
- 6b
- Population
- 85,040
- Last spring frost
- 04/12
- First fall frost
- 10/23
- Growing season
- 193 days
- Nearest zip
- 63366
Local timing baseline
Detailed guidance for this section is being prepared. Check back soon.
Crops suited to O'Fallon
Crops whose USDA zone range includes zone 6b. 87 crops match.
Tree fruit
12 crops
Berries
20 crops
zone 6b Aronia (Black Chokeberry)
Aronia melanocarpa
zones 3a–8a
zone 6b Black Currant
Ribes nigrum
zones 3a–7a
zone 6b Black Raspberry
Rubus occidentalis
zones 4a–8a
zone 6b Blackberry
Rubus subgenus Rubus
zones 5a–9a
zone 6b Cranberry
Vaccinium macrocarpon
zones 3a–7a
zone 6b Elderberry
Sambucus canadensis
zones 3b–9a
Nuts
6 crops
Vegetables
40 crops
zone 6b Arugula
Eruca vesicaria
zones 3b–9a
zone 6b Asparagus
Asparagus officinalis
zones 3b–8b
zone 6b Beet
Beta vulgaris
zones 3a–9a
zone 6b Broccoli
Brassica oleracea var. italica
zones 3a–9a
zone 6b Brussels Sprouts
Brassica oleracea var. gemmifera
zones 3b–8a
zone 6b Bush Bean
Phaseolus vulgaris
zones 3b–9a
Herbs
9 crops
Other cities in Missouri
Frequently asked questions
- What USDA zone is O'Fallon, MO?
O'Fallon sits in USDA hardiness zone 6b, based on the nearest zip code (63366).
- When are the average last and first frost dates in O'Fallon?
Based on the nearest weather station, O'Fallon averages a last spring frost around 04/12 and a first fall frost around 10/23, for a growing season of about 193 days.
- What crops grow well in O'Fallon?
87 crops in the ZonePlant database have a recommended USDA zone range that includes zone 6b. Tree fruit, berries, and most common vegetables are well-suited; check each crop page for variety-level guidance.
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