Landscaping Rules in Ada County, ID (2026)
5 county-level rules, plus city-specific rules for 1 city in Ada County, Idaho.
Verified from official government sources
Tree Removal & Heritage Trees
Ada County has no private-tree-removal permit, but Idaho law requires every landowner to control designated noxious weeds on their land. Ada County's weed superintendent (Chapter 8) enforces this, and failure is a misdemeanor.
Noxious Weed and Tree-Removal Duties in Ada County
Some RestrictionsIdaho Code 22-2407 (Landowner and citizen duties)
It shall be the duty and responsibility of all landowners to control noxious weeds on their land and property, in accordance with this chapter and with rules promulgated by the director. The cost of controlling noxious weeds shall be the obligation of the landowner.
Weed Ordinances
Idaho Code 22-2407 makes it every landowner's duty to control noxious weeds, enforced in unincorporated Ada County by the county weed superintendent under Title 22, Chapter 24. Ada County has no fixed grass-height number in county code; incorporated cities set their own weed and grass limits.
Weeds and Overgrown Grass Rules in Ada County
Some RestrictionsIdaho Code 22-2407
It shall be the duty and responsibility of all landowners to control noxious weeds on their land and property, in accordance with this chapter and with rules promulgated by the director.
Rainwater Harvesting
Ada County Code 8-3-5(E)(4)(a) requires rainwater harvesting on any commercial or industrial building over 10,000 square feet and any single-family home over 25,000 square feet. Cisterns or rain barrels must hold at least 40 gallons, and the collected water can irrigate landscaping, flush toilets, or run pressure washers. The rule sits inside the county's infrastructure standards for new development.
Rainwater Harvesting Requirements in Ada County
Some RestrictionsAda County Code 8-3-5(E)(4)(a)
4. Water Conservation Measures: a. Rainwater Harvesting. Rainwater harvesting includes, but is not limited to, cisterns and rain barrels. (1) All commercial and industrial structures over ten thousand (10,000) square feet require the use of rainwater harvesting techniques. (2) All single-family residences greater than twenty-five thousand (25,000) square feet require the use of rainwate...
Native Plants
Ada County's zoning code caps traditional bluegrass lawn at 50% of any landscape area and directs developers toward native, low-water plant material on projects that require master site plan review. The standard sits in Ada County Code section 8-3-7 and applies countywide outside the exempt rural base districts.
Native Plant Landscaping Rules in Ada County
Some RestrictionsAda County Code 8-3-7(D)(7)
7. All landscaping shall be designed to be waterwise per the suggested plant list provided by Ada County. a. The use of native and low-water and native plant material is highly encouraged. b. Plants shall be grouped into hydrozones based on similar water needs to minimize the unnecessary use of water plants with low water needs. c. High water-use plant materia...
Composting
Ada County Code 5-2-4-2(E) allows composting on any parcel as long as it never becomes a public nuisance by attracting flies, harboring rodents, or creating noxious odors. Private composting, defined separately in Section 5-2-3, is capped at 10 cubic yards at any one time and limited to parcels under five acres producing compost for use on the same property.
Residential Composting Rules in Ada County
Light RestrictionsAda County Code § 5-2-4-2(E); § 5-2-3
E. Composting: Composting is permissible. Matter used for composting may be transported, kept, and used, provided the compost or matter used for composting shall not constitute a public nuisance. For the purposes of this chapter, there are three (3) types of composting activities: agricultural service composting, commercial composting facility, and private composting as defined in section 5-2-3...
Landscaping Rules by City in Ada County
1 cities in Ada County have their own landscaping rules rules. Each link goes to that city's dedicated page with code citations.
All Ada County ordinances
See every category we cover for Ada County: parking, noise, fences, fires, animals, pools, and more.
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