Local planting guide · Midwest
zip 60661
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's 201-day growing season and April 11 last-spring-frost date offer a respectable window for temperate fruit trees, but the city's gardening reality is more complex than the calendar suggests. Warm spells in March can trigger bloom before the final frost arrives, putting apples, pears, and stone fruits at risk. Summer humidity transforms the lakeside microclimate into a disease pressure cooker. Powdery mildew and apple scab thrive in the wet, still air of late June and July. Winter cold, while not extreme compared to the Upper Midwest, is consistent; the zone 6b minimum of -5 to 0°F routinely kills marginally hardy plants that thrive just 200 miles south. These constraints have shaped which crops perform reliably in Chicago yards. Sour cherry and American persimmon tolerate the wet summers and cold winters better than peaches. Apples and pears succeed when sited for air movement and selected for scab resistance. The October 31 first-fall-frost date is early enough that late-ripening crops demand careful variety selection to avoid frost while still fully ripe.
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
Chicago's signature problem is the false spring followed by a killing frost. A 65°F day in late March convinces trees to break dormancy, then an April freeze burns the emerging fruit buds back to wood. Sour cherry and plum are especially vulnerable, blooming weeks before the April 11 frost deadline. Summer humidity creates a second gauntlet. Apple scab, a fungal disease favored by wet leaves and moderate temperatures (55°F to 75°F), can defoliate young trees by August if not managed with pruning for air circulation and fungicide applications during critical periods. A third issue, often overlooked, is winter wind. The city sits in a corridor where continental arctic air moves quickly south. Young trees and newly grafted specimens without wind protection can sunscald or die back on the windward side.
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, delay the bloom response by planting later-flowering varieties or by selecting microsites with afternoon shade or northern exposure, where the ground thaws more slowly. Sour cherry cultivars like Montmorency are reliably later-blooming than sweet cherries. Second, plan for preventive fungal disease management. In Chicago's humid July and August, space trees 20 feet or more apart and prune to an open-center form, allowing sunlight and air to penetrate the canopy. Monitor with a weather-based disease model if available so sprays align with infection risk rather than a calendar. Third, protect young trees with a windbreak or stake them on the windward side during their first winter. The October 31 first frost is relatively reliable once autumn arrives, but the April 11 last frost is less forgiving; stake out and harden off any tender perennials or late-grafted stock by mid-April at the latest.
Frequently asked questions
- What are the best fruit trees to grow in Chicago?
Apples and pears are the workhorses when chosen for disease resistance. Sour cherry and American persimmon tolerate the humid summers and cold winters better than peaches or sweet cherries. European plum is reliable; Japanese plum is riskier due to early bloom and late-frost interaction.
- When should I plant or transplant trees in Chicago?
Spring planting after April 11 is safest for potted stock. Fall planting after October 31 through early November works well if trees are dormant and fully hardened off. Bare-root trees in early spring, before bud break, give roots time to establish before heat stress.
- How do I protect my trees from late spring frosts?
Select late-blooming varieties and site them in north-facing or shaded locations to delay bud break. If frost threatens during bloom, overhead sprinklers can provide protection by releasing latent heat as water freezes on the flowers. Burlap wraps around smaller canopies offer temporary protection on critical nights.
- What's the biggest weather risk for fruit trees in Chicago?
The April 11 last-spring-frost date is later than many gardeners expect after a warm March. Frost after bloom is the single biggest crop killer. Summer humidity and fungal disease are the second major threat, requiring active disease management with pruning and targeted fungicide applications.
- Can I grow peaches in Chicago?
Peaches are marginal in zone 6b Chicago due to winter kill of flower buds and bloom timing risk. They can work in a protected south-facing location, but sour cherry, American persimmon, or cold-hardy European plum are more reliable for consistent production.
- What should I do in fall to prepare trees for winter?
Stop fertilizing by mid-August to allow trees to harden off before the October 31 first frost. Deep water trees in October if autumn is dry. Prune only lightly in fall; heavy pruning stimulates tender new growth vulnerable to winter damage. Mulch young trees after the first hard freeze.
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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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