Drought-tolerant native plants for Omaha yards: a practical list

Nebraska summers can be hard on a yard. Stretches of heat and wind, uneven rainfall and clay soils that crack when they dry out all push lawns and many common landscape plants to the limit. Native prairie plants evolved with exactly these conditions, which is why they are the backbone of every low-water garden I plan.

One important caveat before the list: "drought tolerant" means drought tolerant once established. Every plant here needs regular water in its first season while it grows roots. After that, most need little or no supplemental watering in a typical year.

What makes a plant drought tolerant

Most prairie plants put far more growth below ground than above it, especially in their first few years. Deep roots reach moisture that lawn grass, with its shallow roots, never touches. Many also have adaptations that reduce water loss — silver or hairy leaves, narrow grass blades, waxy surfaces, or a habit of going semi-dormant in the hottest weeks.

A native plant's real work happens underground. Water the first year for the roots you can't see.

The list: sun-loving natives for dry spots

These are some of the most dependable choices for hot, sunny, dry parts of an Omaha yard: south- and west-facing beds, strips along driveways, slopes and spots far from a hose.

Choosing by use

Different spots in a yard call for different plants, even when they are all dry.

Along driveways and sidewalks

Choose low, tidy plants that tolerate reflected heat and some winter salt: prairie dropseed, blue grama, sideoats grama, purple prairie clover and aromatic aster. Keep taller plants back from edges and corners so they do not block sight lines.

Slopes

Grasses with fibrous roots help hold soil. Little bluestem, sideoats grama and switchgrass are good choices, interplanted with leadplant and coneflowers. Use jute netting or a shredded mulch that knits together rather than wood chips that wash downhill.

South and west walls

These are the hottest spots in most yards. Butterfly milkweed, pale purple coneflower, rough blazing star and little bluestem do well. Leave a gap of a couple of feet between plants and the foundation for airflow and access.

How to water a new native planting

The watering schedule in the first season decides whether you end up with a drought-tolerant garden. The goal is deep, infrequent watering that trains roots to go down.

1. 1

   First 2–3 weeks

   Water every two to three days so the root ball never dries out.

2. 2

   Weeks 3–8

   Shift to a deep soak once or twice a week, depending on heat and rain.

3. 3

   Rest of year one

   Water deeply once a week during dry spells only.

4. 4

   Year two onward

   Water only during long, severe droughts — and then deeply, not often.

Watering checklist for the first season

• Water at the base of plants, not over the leaves
• Water in the morning when possible
• Use a rain gauge or check soil with a finger before watering
• Mulch two to three inches deep to slow evaporation
• Taper off through the first fall; stop once plants go dormant

What to expect in a dry summer

Even established natives respond to severe drought. Some, like prairie dropseed and blue grama, may go partly brown and dormant in late summer, then green up again after rain. That is normal and not a sign the plant is dying. Coneflowers may bloom for a shorter season. Asters may stay shorter. None of this needs fixing; it is how prairie plants get through dry years.

Low-water alternatives to lawn

Not every part of a yard needs to become a flower bed. For areas where you still want something low and walkable — a play space, a dog run, the strip by the sidewalk — a few native grasses and sedges can replace some of a thirsty lawn.

Warm-season grasses like buffalograss and blue grama green up later in spring and turn tan earlier in fall than cool-season lawn grasses. That surprises some people the first year; in return, they need far less water and mowing through the heat of summer.

Getting more from the rain you already get

The most drought-tolerant garden is one that captures the water that falls on the property instead of sending it down the driveway.

Use your downspouts

A downspout directed into a planted bed — rather than onto pavement — can give nearby plants a deep soak after every storm. Make sure water flows away from the foundation, and choose plants nearby that tolerate both wet periods and dry spells, such as swamp milkweed, switchgrass or blue flag iris.

Consider a rain garden

A rain garden is a shallow, planted depression that collects runoff from a roof or slope and lets it soak in over a day or two. It is one of the most effective ways to make a yard more resilient in dry years, because it stores water in the soil around plant roots. In clay, rain gardens need to be sized and placed carefully so they drain within a day or two; local stormwater and extension resources offer good guidance on sizing.

Mulch and leave the leaves

Mulch slows evaporation and keeps soil cooler. Shredded leaves raked from the lawn make a free, fine mulch for perennial beds in fall.

A sample low-water bed

For a sunny, dry bed about the size of a parking space, this mix covers the season with almost no watering once established.

Watering a new planting the right way

Even the toughest native plant needs help in its first season. The goal is to water deeply and less often, which encourages roots to grow down instead of staying near the surface. For new plugs, that usually means a thorough soak a couple of times a week in the first month, then gradually stretching the time between waterings through the summer. A simple test is to push a finger a couple of inches into the soil near the plant: if it's dry at that depth, it's time to water. By the second year, most established natives in this list only need water during extended dry spells.

Morning is the best time to water, since less is lost to evaporation and leaves dry quickly. A soaker hose or a slow trickle from a regular hose, left at the base of the plants, delivers water where roots can use it far better than a quick spray from overhead.

Mistakes that make gardens thirstier

1. Too much compost or fertilizer. Rich soil encourages soft, leafy growth that needs more water. Most natives prefer lean soil.
2. Bare soil between plants. Exposed soil dries and crusts quickly. Mulch until the plants fill in.
3. Mixing thirsty plants with dry-loving ones. Group plants by water needs so you are not watering the whole bed for one plant.
4. Giving up in year one. The first summer is the only one that really needs regular watering.

Many of these plants are also excellent for pollinators — see the small-yard pollinator guide — and most handle heavy soil, as I explain in planting in Omaha clay.