Illinois climate, water & plant-palette drivers
- USDA hardiness zone: 5a-7a — drives plant-palette selection and frost-survival ratings
- Annual rainfall: 39 inches/yr — drives irrigation system sizing
- Growing season: 180 frost-free days per year
- Drought tier: Low — adequate residential precipitation, minimal drought stress
- Irrigation dependency: Low — irrigation optional, established plants survive on rainfall
- Frost-line trench depth: 42-inch design minimum for irrigation backflow + bed prep
- Dominant residential aesthetic: Turf-dominant — cool- or warm-season residential lawn as primary front-yard ground cover
- Wildfire defensible-space rule: No WUI defensible-space requirement
Illinois licensing, pesticide & permits
- License status: No statewide license — municipal credentials only
- License board: No statewide landscape license; Illinois Department of Agriculture Pesticide Applicator; Chicago Department of Buildings Class B contractor credentials (official site)
- Permit: no permit required for landscape install; IDOA Commercial Pesticide Applicator required for any chemical lawn care; Chicago turf pesticide ban on park district properties
How landscape installation costs vary in Illinois
State-specific code or insurance rule: Illinois Pesticide Act (415 ILCS 60) requires every Illinois landscape contractor applying restricted-use pesticides on residential property to hold an Illinois Department of Agriculture Commercial Pesticide Applicator credential — and the Lawn Care Products Application & Notice Act (415 ILCS 65) separately requires every Illinois lawn-care company to provide written advance notification to neighbors within 50 ft of any residential pesticide application, plus mandatory yard-marker signage immediately following application, the most restrictive notification regime in the Midwest.
Cities in Illinois
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