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City guide · Zone 6b

What to plant in Chicago, Illinois

A full-sun bed in Chicago: Weigela 'Wine & Roses', Dwarf fountain grass 'Hameln', English lavender 'Hidcote', Blanket flower 'Arizona Sun', Angelina stonecrop 'Angelina'. Zone 6b, last frost around Apr 25.

Cold winters and hot, humid summers; the lake moderates the city's edge. Prairie perennials and tough shrubs thrive.

Preview: plant data is awaiting horticulturist review. A professional horticulturist hasn't reviewed our plant table yet. Lists still follow fixed rules for zone, sun, pets, deer and invasive status.

Chicago, Illinois at a glance

Hardiness zone (2023 USDA)
6b (ZIP 60601)
Typical last spring frost
Apr 25
Typical first fall frost
Oct 20
Spring planting window
early May to early June
Fall planting window
mid-September to mid-October
Annual rainfall (approx.)
38 in

Frost dates are typical metro values, not forecasts. Humid summers and wide temperature swings matter alongside winter cold; most plants hardy here also take the heat. Our lists for Chicago use the rules for the Midwest.

Zone: USDA Plant Hardiness Zone Map, 2023 (USDA Agricultural Research Service; data by the PRISM Climate Group, Oregon State University). ZIP code to state data: GeoNames (geonames.org), CC BY 4.0.

A full-sun bed in Chicago

6 or more hours of direct summer sun, 12 × 6 ft.

12 × 6 ft · Zone 6b · 6+ hours of sun · Cottage

Kinds

5

Plants

30

Coverage

75%

Mulch

9 bags

Mulch: 0.67 cu yd at 3 in deep (9 bags of 2 cu ft). Plants cover about 75% of the 72 sq ft bed when mature.

A part-shade bed in Chicago

2 to 4 hours of direct summer sun, 12 × 6 ft.

12 × 6 ft · Zone 6b · 2–4 hours of sun · Classic

Kinds

5

Plants

39

Coverage

91%

Mulch

9 bags

Mulch: 0.67 cu yd at 3 in deep (9 bags of 2 cu ft). Plants cover about 91% of the 72 sq ft bed when mature.

A shady bed in Chicago

Under 2 hours of direct summer sun, 12 × 6 ft.

12 × 6 ft · Zone 6b · Under 2 hours of sun · Classic

Kinds

5

Plants

31

Coverage

87%

Mulch

9 bags

Mulch: 0.67 cu yd at 3 in deep (9 bags of 2 cu ft). Plants cover about 87% of the 72 sq ft bed when mature.

Guides for zone 6

Questions and answers

What hardiness zone is Chicago, Illinois in?
Central Chicago (ZIP 60601) is in zone 6b on the 2023 USDA map: the coldest night of an average winter falls between -5°F and 0°F. Suburbs can be half a zone colder.
When is the last frost in Chicago?
Typically around Apr 25 in spring and Oct 20 in fall. These are typical dates; any one year can be two weeks earlier or later.
When should I plant shrubs and perennials in Chicago?
In spring, early May to early June; in fall, mid-September to mid-October. Fall planting gives roots a cool, moist season to settle before summer.
How many plants do I need for a 12 × 6 ft bed in Chicago?
Our full-sun bed list for Chicago uses 30 plants of 5 kinds, plus 9 bags of mulch.

How this page was made

This page was generated from FloraVista's plant table by fixed rules: the rules engine composed each list for the city's 2023 USDA zone, its region's summers and its state's invasive lists. The frost dates and rainfall are approximate metro values. No person or chat model chose these plants, and no named expert has reviewed this page.

Data status: the plant table is awaiting review by a horticulturist. Check each plant with a local nursery or extension office before you buy.

Sources

  • Missouri Botanical Garden Plant Finder, state extension services and the USDA PLANTS database (zones, size, sun, water, bloom, native range)
  • ASPCA toxic and non-toxic plant lists (dog and cat toxicity)
  • Rutgers NJAES and regional extension deer-resistance ratings
  • State noxious-weed and invasive-plant lists and the Invasive Plant Atlas of the US
  • Typical US garden-centre listings (pot size and price band)
  • USDA Plant Hardiness Zone Map, 2023. Agricultural Research Service, U.S. Department of Agriculture. Data by the PRISM Climate Group, Oregon State University.
  • ZIP code to state data: GeoNames (geonames.org), licensed under CC BY 4.0.

Generated . How FloraVista chooses plants