How-to Guide
Gardening Under Watering Restrictions
The short answer
Under restrictions, spend your limited water where loss is permanent. Extension drought-triage guidance from NC State and Iowa State puts established and recently planted trees and shrubs at the top, because you cannot replace a decades-old tree in a season, then vegetables and new plantings, and established lawn last. Annuals and mature turf are cheap or self-recovering, so they lose out first.
Match method to the rules. Iowa State notes drip irrigation and soaker hoses use 30-50% less water than sprinklers, and many municipalities restrict inefficient sprinklers and daytime watering more tightly than drip or hand-watering; drip is often allowed when sprinklers are banned, but rules vary, so confirm your city's stage and schedule before relying on any exemption.
Let the lawn go dormant as a deliberate strategy. NC State notes it is far less stressful for turf to stay dormant than to be kept marginally green, freeing your water for the plants that matter.
Triage: what to water first, and last
Extension drought guidance sets a clear priority order. Top priority goes to trees and shrubs, both establatished specimens (the biggest investment and hardest to replace) and anything planted in the last two years, whose root systems are not developed yet; rare or sentimental specimens rank here too. NC State frames it bluntly: you cannot replace a fifty-year-old tree without another fifty years.
Middle priority is perennials, fruit and small fruits, and newly seeded or under-one-year turf. Lowest priority is annual flowers, established lawn, and seasonal vegetable beds that are nearly done, because annuals are cheap and die at season's end regardless. Iowa State's short version: prioritize vegetables and newly planted plants over turfgrass.
Water deeply and infrequently to build deeper roots, and mulch everything you are trying to save; Iowa State notes mulch reduces evaporation and moderates soil temperature.
Efficient methods, and what is usually allowed
Iowa State reports drip irrigation and soaker hoses use 30-50% less water than traditional sprinklers, and both extension and municipal drought programs treat them as the preferred tools during restrictions. Under many local ordinances, drip, soaker, and hand-held hose watering of trees, shrubs and beds is permitted on days or hours when automatic sprinklers are banned, because sprinklers are the least efficient delivery. See drip-vs-soaker-hose for choosing between them.
The critical caveat: exemptions are set locally and change by drought stage, so a drip allowance in one town is not universal. Check your water utility's current restriction stage, allowed days, and allowed hours before watering. Where timing is your choice, water in the early morning when it is cool and calm to minimize evaporation loss (CSU suggests overnight-to-early-morning windows where local rules allow).
Lawn dormancy as a water-saving strategy
The single biggest water saving is to stop trying to keep the lawn green. NC State notes it is much less stressful for turf to remain dormant than to be active and drought-stressed, and Illinois Extension warns that repeatedly watering just enough to green up a dormant lawn actually drains the plant's reserves. Letting cool-season turf brown and go dormant frees essentially all your lawn water for trees, shrubs and vegetables.
If you want the lawn to survive rather than truly green up, a small maintenance amount keeps the crowns alive; the specifics and the do-not-break-dormancy rule are covered in the companion decision guide, water-lawn-or-let-it-go-dormant.
Sources
Reviewed 2026-07-18. We cite university Extension, government, and established horticultural sources — and never invent pesticide rates or dangerous treatments.
- NC State Extension — Dealing With Drought — Watering priority: trees and shrubs planted within the last 2 years and established trees/shrubs are top priority (biggest investment, hardest to replace); drought-sensitive plants like Japanese maples, dogwoods, azaleas next; annuals are least expensive, easiest to replace and will die at season's end even if watered; it is much less stressful for turf to remain dormant than to be active and drought-stressed
- Iowa State University Extension — Watering the Garden & Lawn During Periods of Drought or Water Restrictions — Prioritize vegetables, newly planted plants and garden areas over turfgrass; lawns can remain dormant 4 to 6 weeks with little long-term damage; drip irrigation and soaker hoses use 30-50% less water than traditional sprinklers; water in the morning when cool and calm to reduce evaporation; water deeply and infrequently; vegetable gardens need about 1 inch per week; mulch reduces evaporation and moderates soil temperature
- Colorado State University Office of Engagement and Extension — Landscape health during drought and water restrictions — Install drip irrigation in shrub and perennial borders to dramatically reduce water use; water deeply and infrequently to develop deep roots; water overnight/early morning (about 9 p.m. to 9 a.m.) or per local restrictions; if lawns are drought dormant eliminate foot traffic; mulch trees and shrubs to reduce evaporation