Local planting guide · Midwest
zip 60699
Chicago is in USDA hardiness zone 6b, with average winter lows of -5°F to 0°F. The local growing season runs roughly 04/11 through 10/31 (~201 days). This zip falls within the Midwest growing region.
- USDA zone
- 6b -5°F to 0°F
- Last spring frost
- 04/11
- First fall frost
- 10/31
- Growing season
- 201 days
- Compatible crops
- 87
- Growing region
- Midwest
Right now in Chicago
Week 18 priorities
On the docket: transplant out after last frost · direct sow after last frost. See the full calendar →
Gardening in Chicago
Chicago sits in USDA zone 6b, a continental climate defined by cold winters with temperatures dropping to -5°F or colder and a 201-day growing season bracketed by frost dates: last spring frost around April 11 and first fall frost around October 31. This is challenging territory for tender crops but ideal for hardy stone fruits, pome fruits, and nut-bearing species. Apples, pears, sour cherries, and American persimmons are among the most dependable choices for zone 6b anywhere in the country.
Lake Michigan moderates temperature extremes somewhat but also contributes to high humidity during the growing season, which increases fungal disease pressure in spring and summer. Gardeners who establish expectations around these constraints (prioritizing disease-resistant varieties, accepting that some years peach crops will be lost to late frosts, and choosing cold-hardy rootstocks) find fruit production entirely feasible. The combination of adequate summer warmth and sufficient chill hours for most temperate fruit makes Chicago a sustainable growing region, not a marginal one.
Regional context · Midwest
What the Midwest brings to Chicago
Continental humid. Cold winters, hot humid summers. Heart of the country's vegetable, sweet corn, and cool-climate fruit production. Michigan and Wisconsin are major fruit states.
Common challenges
Issues that most often defeat home gardeners in zone 6b, drawn from the broader USDA zone profile.
- ▸ Cedar-apple rust
- ▸ Fire blight
- ▸ Stink bugs
What defeats new gardeners in Chicago
The most consistent challenge is the late spring frost window. April 11 is when frost probability drops below 50%, but freeze events occur into late April in many years. Early bloom on apples, pears, and stone fruits can coincide with these frosts, wiping out the crop in a single night.
Winter survival is the second major issue, particularly for peaches and Japanese plums, which require intensive variety selection to avoid winter kill. The third is humidity-driven disease: apple scab and fire blight in spring, powdery mildew in summer. Lake Michigan's stable moisture and cloud cover extend the conditions favorable for fungal infections. Gardeners who do not choose disease-resistant varieties or ignore sanitation see persistent disease pressure that degrades fruit quality and tree health.
Crops that grow in Chicago
87 crops from our catalog match zone 6b, grouped by type.
Tree fruit
12 crops
zone 6b Apple
Malus domestica
zones 3a–9a
zone 6b Pear
Pyrus communis
zones 4a–8b
zone 6b Peach
Prunus persica
zones 5a–9a
zone 6b European Plum
Prunus domestica
zones 4a–8a
zone 6b Japanese Plum
Prunus salicina
zones 5b–9a
zone 6b Sweet Cherry
Prunus avium
zones 5a–8a
zone 6b Sour Cherry
Prunus cerasus
zones 4a–7b
zone 6b American Persimmon
Diospyros virginiana
zones 4b–9a
Berries
20 crops
zone 6b Highbush Blueberry
Vaccinium corymbosum
zones 4a–7b
zone 6b Lowbush Blueberry
Vaccinium angustifolium
zones 3a–6b
zone 6b Red Raspberry
Rubus idaeus
zones 3b–8a
zone 6b Black Raspberry
Rubus occidentalis
zones 4a–8a
zone 6b Yellow Raspberry
Rubus idaeus
zones 3b–8a
zone 6b Blackberry
Rubus subgenus Rubus
zones 5a–9a
zone 6b June-Bearing Strawberry
Fragaria x ananassa
zones 3a–8b
zone 6b Everbearing Strawberry
Fragaria x ananassa
zones 3b–9a
Nuts
6 crops
Vegetables
40 crops
zone 6b Tomato
Solanum lycopersicum
zones 3a–10b
zone 6b Sweet Pepper
Capsicum annuum
zones 4a–10b
zone 6b Hot Pepper
Capsicum species
zones 4a–10b
zone 6b Eggplant
Solanum melongena
zones 5a–10b
zone 6b Potato
Solanum tuberosum
zones 3a–9a
zone 6b Cabbage
Brassica oleracea var. capitata
zones 3a–9b
zone 6b Broccoli
Brassica oleracea var. italica
zones 3a–9a
zone 6b Cauliflower
Brassica oleracea var. botrytis
zones 3b–9a
Herbs
9 crops
zone 6b Basil
Ocimum basilicum
zones 4a–10b
zone 6b Parsley
Petroselinum crispum
zones 3b–9b
zone 6b Cilantro / Coriander
Coriandrum sativum
zones 3b–9b
zone 6b Dill
Anethum graveolens
zones 3b–9a
zone 6b Oregano
Origanum vulgare
zones 4a–9b
zone 6b Thyme
Thymus vulgaris
zones 4a–9a
zone 6b Sage
Salvia officinalis
zones 4a–9a
zone 6b Mint
Mentha species
zones 3b–9b
Plan the year
Planting calendar for Chicago
Year-view of seed starting, transplanting, planting, pruning, fertilizing, harvest, and pest-watch windows tuned to Chicago's local frost dates.
Week ? · loading
This week in Chicago, IL (zone 6b)
Quiet week in Chicago, IL (zone 6b). this week is a good time to step back and plan ahead.
Nothing critical on the calendar this week.
434 bars · 87 crops
Calendar logic combines NOAA frost normals with crop-specific timing data. Local microclimate and weather always overrules the calendar; use this as a starting point.
Top pests for zone 6b
Ranked by how many crops in your zone they affect. Click through for IPM controls and signs to watch for.
Multiple species (Aphididae)
Small soft-bodied sap-sucking insects that reproduce explosively in spring. Excrete honeydew that supports sooty mold and attracts ants. Transmit viral diseases.
Odocoileus species
Whitetail and mule deer browse can devastate orchards and gardens, particularly in winter when food is scarce. Antler rub on young trunks kills saplings outright.
Multiple species
Robins, catbirds, mockingbirds, starlings, cedar waxwings and other songbirds can strip ripening berry and fruit crops in days. Crows and blackbirds also damage fresh sweet corn ears in milk stage. The single biggest yield-loss factor in unprotected home plantings.
Sylvilagus and Lepus species
Cottontails and jackrabbits strip bark from young fruit trees in winter and graze tender garden vegetables year-round, especially seedlings.
Popillia japonica
Defoliating beetle introduced to North America in 1916. Skeletonizes leaves of many fruit trees, berry canes, and pecan.
Multiple species (Chrysomelidae)
Tiny black or bronze jumping beetles that put hundreds of small holes in seedling leaves. Most damaging on direct-seeded brassicas and young eggplant.
Tetranychus urticae
Tiny mite that feeds on leaf undersides, causing stippling and webbing during hot dry weather.
Microtus species
Field voles and meadow voles girdle young fruit-tree trunks under snow cover during winter and chew root crops. The leading cause of mysterious orchard losses.
Top diseases for zone 6b
Ranked by how many crops in your zone they affect. Click through for symptoms, controls, and resistant varieties.
Botrytis cinerea
Ubiquitous fungal disease that causes fruit rot during cool wet weather, often the dominant berry disease in humid regions.
Pseudoperonospora cubensis (cucurbits) and others
Water mold (oomycete, not a true fungus) that thrives in cool damp conditions. Spreads rapidly through cucurbit and brassica plantings on wind-borne spores.
Pythium and Rhizoctonia species
Soil-borne complex of water molds and fungi that kill seedlings before or shortly after emergence. The single most common cause of seed-starting failures.
Cucumber mosaic virus, Tobacco mosaic virus, and others
Family of plant viruses producing mottled yellow-and-green leaf patterns. Vectored primarily by aphids; some are seed-transmitted or spread by handling tools and tobacco products.
Agrobacterium tumefaciens
Soil-borne bacterium that enters plants through wounds and induces tumor-like galls on roots, crown, and lower stems. Galls reduce vigor and shorten plant lifespan; on Rubus the disease is often fatal.
Fusarium oxysporum
Soil-borne fungal disease that plugs vascular tissue and kills affected plants. Persists in soil for many years; impossible to eliminate once established.
Sclerotium rolfsii
Soil-borne fungal disease most damaging in warm humid Southern conditions. White mycelial fans and small mustard-seed-sized sclerotia at the soil line are diagnostic.
Plasmodiophora brassicae
Soil-borne disease causing characteristic distorted club-shaped roots on brassicas. Persists in soil for 10-20 years; the dominant brassica pathogen in acidic poorly-drained soils.
Companion planting suggestions
Beneficial pairings drawn from companion data, filtered to crops that grow in zone 6b.
- Peach + Garlic
Garlic planted around peach trees suppresses peach borer and provides general fungal-pressure reduction.
- European Plum + Garlic
Garlic discourages plum curculio and provides general antifungal benefit beneath stone fruit.
- American Persimmon + Pawpaw
Both natives thrive in similar soils and contribute to a polyculture that supports native pollinators and fauna.
- Jujube + Thyme
Thyme groundcover suits jujube's low-water profile and deters cabbage moth and aphid populations.
- Apricot + Basil
Basil's volatile oils discourage stone-fruit pests and support pollinator visits.
- Highbush Blueberry + Thyme
Creeping thyme thrives in the acidic mulched conditions blueberries require and attracts pollinators during bloom.
Soil types reference
Soil texture and pH decide what grows easily on your specific lot. Find the closest match below for crop recommendations and amendment guidance.
Practical tips for Chicago
First, select varieties rated for zone 6a or colder, not merely 6b. The difference between a variety that dies once in a decade and one that dies once every three years is real. For peaches, choose late-bloom varieties to avoid spring frost damage.
Second, frost protection on small trees is practical: row covers or frost blankets deployed on nights when frost warnings are issued in April or October can mean the difference between a zero crop and a normal yield. Third, establish trees on elevated sites or mild microclimates. Low-lying areas collect cold air and north-facing slopes experience slower spring warm-up, delaying bloom and reducing frost risk. Site selection is often overlooked but can mitigate the single most destructive factor in zone 6b fruit growing.
Frequently asked questions
- What fruit trees grow best in Chicago?
Apples, pears, sour cherries, and American persimmons are the most reliable crops. Peaches and Japanese plums require careful variety selection for late bloom and cold hardiness. Sweet cherries and European plums require disease-resistant cultivars, particularly for black knot and brown rot resistance.
- When is the last spring frost date in Chicago?
Average last spring frost is April 11 according to NOAA Climate Normals 1991-2020, but frost can occur into late April in 1 of every 4 or 5 years. Plan frost-protection measures for all tender growth through the end of April.
- Are peaches hardy enough for Chicago winters?
Peaches are marginal but not impossible. Choose varieties with very low chill-hour requirements and late bloom times (Contender, Reliance, and similar northern-bred cultivars). Expect to lose some crops to late spring frosts or winter hardiness even with good variety selection.
- What's the biggest weather risk for fruit crops in Chicago?
Late spring frost is the single most destructive threat. Temperatures often rise into the 50s or 60s in late March and early April, triggering bloom, then a freeze arrives in mid- to late April and destroys the crop. Site selection and frost-protection infrastructure matter more here than in milder zones.
- Does Chicago's lake climate create disease problems?
Yes. High humidity and cloud cover from Lake Michigan extend the spring and fall windows for fungal diseases. Apple scab, fire blight, and mildew thrive in these conditions. Disease-resistant varieties (such as Liberty or Priscilla apples) are non-negotiable, not optional.
- When should I plant apple trees in Chicago?
Fall planting (October through November) is preferable, allowing root establishment over winter before spring growth. Spring planting (March to April, before bud break) is acceptable but leaves newly planted trees vulnerable to late frost damage.
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Frost data: NOAA Climate Normals 1991-2020, station USW00014819. Local microclimates can shift these dates by a week or more.
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