Lawn by Season

Idaho Native Plants by Layer

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40 native species are verified for Idaho across the three planting layers, and this page ranks them by the wildlife they support. Idaho sits in the Northwestern Forested Mountains ecoregion, so every count below is the figure published for Northwestern Forested Mountains rather than a national average. The idea is not to remove your lawn. It is that a canopy tree, a shrub layer along a border and a flowering ground layer do the ecological work a garden can actually do, while the turf stays turf.

Canopy for Idaho

The tree layer. This is where most of the caterpillars that birds feed their nestlings are produced, which is why a single tree choice outweighs everything else in the yard.

21 verified canopy options for Idaho. bitter cherry leads on published wildlife value.

Bitter Cherry

Prunus emarginata
  • The genus Prunus hosts 409 caterpillar species in the published keystone list for this ecoregion. Genus-level figure, not a count for Prunus emarginata alone.

Growing conditions: shade tolerance high, moisture use medium, mature height 80.0 ft, blooms mid spring, moderate growth.

Drought tolerance: MediumNativity per USDA PLANTS: Native - CAN, Native - L48. Recorded in Idaho.

Chokecherry

Prunus virginiana
  • The genus Prunus hosts 409 caterpillar species in the published keystone list for this ecoregion. Genus-level figure, not a count for Prunus virginiana alone.

Growing conditions: shade tolerance high, moisture use medium, mature height 25.0 ft, blooms mid spring, rapid growth.

Drought tolerance: MediumNativity per USDA PLANTS: Introduced - AK, Native - AK, Native - CAN, Native - L48, Native - SPM. Recorded in Idaho.

Resin Birch

Betula glandulosa
  • The genus Betula hosts 385 caterpillar species in the published keystone list for this ecoregion. Genus-level figure, not a count for Betula glandulosa alone.

USDA lists no drought tolerance value for this species.Nativity per USDA PLANTS: Native - AK, Native - CAN, Native - GL, Native - L48. Recorded in Idaho.

Water Birch

Betula occidentalis
  • The genus Betula hosts 385 caterpillar species in the published keystone list for this ecoregion. Genus-level figure, not a count for Betula occidentalis alone.

Growing conditions: shade tolerance medium, moisture use high, mature height 25.0 ft, blooms mid spring, rapid growth.

Drought tolerance: Low.Nativity per USDA PLANTS: Native - AK, Native - CAN, Native - L48. Recorded in Idaho.

Paper Birch

Betula papyrifera
  • The genus Betula hosts 385 caterpillar species in the published keystone list for this ecoregion. Genus-level figure, not a count for Betula papyrifera alone.

Growing conditions: shade tolerance high, moisture use high, mature height 70.0 ft, blooms mid spring, rapid growth.

Drought tolerance: Low.Nativity per USDA PLANTS: Native - AK, Native - CAN, Native - L48, Native - SPM. Recorded in Idaho.

Balsam Poplar

Populus balsamifera
  • The genus Populus hosts 337 caterpillar species in the published keystone list for this ecoregion. Genus-level figure, not a count for Populus balsamifera alone.

Growing conditions: shade tolerance high, moisture use high, mature height 80.0 ft, blooms late spring, rapid growth.

Drought tolerance: Low.Nativity per USDA PLANTS: Native - AK, Native - CAN, Native - L48. Recorded in Idaho.

Quaking Aspen

Populus tremuloides
  • The genus Populus hosts 337 caterpillar species in the published keystone list for this ecoregion. Genus-level figure, not a count for Populus tremuloides alone.

Growing conditions: shade tolerance high, moisture use high, mature height 65.0 ft, blooms mid spring, rapid growth.

Drought tolerance: Low.Nativity per USDA PLANTS: Native - AK, Native - CAN, Native - L48, Native - SPM. Recorded in Idaho.

Rocky Mountain Maple

Acer glabrum
  • The genus Acer hosts 276 caterpillar species in the published keystone list for this ecoregion. Genus-level figure, not a count for Acer glabrum alone.

Growing conditions: shade tolerance medium, moisture use low, mature height 30.0 ft, blooms late spring, rapid growth.

Drought tolerance: MediumNativity per USDA PLANTS: Native - CAN, Native - L48, Probably Introduced - AK. Recorded in Idaho.

13 further verified canopy species for Idaho are in the dataset behind the native plant finder.

Understory for Idaho

Shrubs and small trees beneath the canopy. This layer carries the shoulder-season fruit and cover, and it is the easiest layer to add along an existing fence line or bed edge.

9 verified understory options for Idaho. peachleaf willow leads on published wildlife value.

Peachleaf Willow

Salix amygdaloides
  • The genus Salix hosts 397 caterpillar species in the published keystone list for this ecoregion. Genus-level figure, not a count for Salix amygdaloides alone.
  • 12 pollen specialist bee species rely on the genus Salix. Genus-level figure.

Growing conditions: shade tolerance high, moisture use high, mature height 60.0 ft, blooms late spring, rapid growth.

Drought tolerance: Low.Nativity per USDA PLANTS: Native - CAN, Native - L48. Recorded in Idaho.

Narrowleaf Willow

Salix exigua
  • The genus Salix hosts 397 caterpillar species in the published keystone list for this ecoregion. Genus-level figure, not a count for Salix exigua alone.
  • 12 pollen specialist bee species rely on the genus Salix. Genus-level figure.

Growing conditions: shade tolerance medium, moisture use high, mature height 10.0 ft, blooms early spring, rapid growth.

Drought tolerance: MediumNativity per USDA PLANTS: Native - AK, Native - CAN, Native - L48. Recorded in Idaho.

Sandbar Willow

Salix interior
  • The genus Salix hosts 397 caterpillar species in the published keystone list for this ecoregion. Genus-level figure, not a count for Salix interior alone.
  • 12 pollen specialist bee species rely on the genus Salix. Genus-level figure.

Growing conditions: shade tolerance high, mature height 30.0 ft, blooms early spring, rapid growth.

Drought tolerance: Low.Nativity per USDA PLANTS: Native - AK, Native - CAN, Native - L48. Recorded in Idaho.

Arroyo Willow

Salix lasiolepis
  • The genus Salix hosts 397 caterpillar species in the published keystone list for this ecoregion. Genus-level figure, not a count for Salix lasiolepis alone.
  • 12 pollen specialist bee species rely on the genus Salix. Genus-level figure.

Growing conditions: shade tolerance high, moisture use high, mature height 35.0 ft, moderate growth.

Drought tolerance: None.Nativity per USDA PLANTS: Native - L48. Recorded in Idaho.

Black Willow

Salix nigra
  • The genus Salix hosts 397 caterpillar species in the published keystone list for this ecoregion. Genus-level figure, not a count for Salix nigra alone.
  • 12 pollen specialist bee species rely on the genus Salix. Genus-level figure.

Growing conditions: shade tolerance high, moisture use high, mature height 100.0 ft, blooms early spring, rapid growth.

Drought tolerance: Low.Nativity per USDA PLANTS: Native - CAN, Native - L48. Recorded in Idaho.

Scouler'S Willow

Salix scouleriana
  • The genus Salix hosts 397 caterpillar species in the published keystone list for this ecoregion. Genus-level figure, not a count for Salix scouleriana alone.
  • 12 pollen specialist bee species rely on the genus Salix. Genus-level figure.

Growing conditions: shade tolerance medium, moisture use high, mature height 50.0 ft, blooms early spring, rapid growth.

Drought tolerance: MediumNativity per USDA PLANTS: Native - AK, Native - CAN, Native - L48. Recorded in Idaho.

Sitka Willow

Salix sitchensis
  • The genus Salix hosts 397 caterpillar species in the published keystone list for this ecoregion. Genus-level figure, not a count for Salix sitchensis alone.
  • 12 pollen specialist bee species rely on the genus Salix. Genus-level figure.

Growing conditions: shade tolerance high, moisture use high, mature height 23.0 ft, rapid growth.

Drought tolerance: None.Nativity per USDA PLANTS: Native - AK, Native - CAN, Native - L48, Native - SPM. Recorded in Idaho.

Thinleaf Huckleberry

Vaccinium membranaceum
  • The genus Vaccinium hosts 276 caterpillar species in the published keystone list for this ecoregion. Genus-level figure, not a count for Vaccinium membranaceum alone.
  • 6 pollen specialist bee species rely on the genus Vaccinium. Genus-level figure.

Growing conditions: shade tolerance medium, moisture use low, mature height 4.5 ft, blooms late spring, moderate growth.

Drought tolerance: Low.Nativity per USDA PLANTS: Native - CAN, Native - L48. Recorded in Idaho.

1 further verified understory species for Idaho are in the dataset behind the native plant finder.

Ground layer for Idaho

Flowering perennials at ground level. This is the layer that keeps pollen and nectar available from spring through fall, and it is what specialist bees depend on.

10 verified ground layer options for Idaho. Canada goldenrod leads on published wildlife value.

Canada Goldenrod

Solidago canadensis
  • The genus Solidago hosts 120 caterpillar species in the published keystone list for this ecoregion. Genus-level figure, not a count for Solidago canadensis alone.
  • 22 pollen specialist bee species rely on the genus Solidago. Genus-level figure.

Growing conditions: shade tolerance high, moisture use medium, mature height 3.5 ft, blooms late summer, rapid growth.

Drought tolerance: MediumNativity per USDA PLANTS: Introduced - HI, Native - AK, Native - CAN, Native - L48. Recorded in Idaho.

Giant Goldenrod

Solidago gigantea
  • The genus Solidago hosts 120 caterpillar species in the published keystone list for this ecoregion. Genus-level figure, not a count for Solidago gigantea alone.
  • 22 pollen specialist bee species rely on the genus Solidago. Genus-level figure.

Growing conditions: shade tolerance medium, moisture use medium, mature height 8.2 ft, blooms indeterminate, moderate growth.

Drought tolerance: MediumNativity per USDA PLANTS: Native - CAN, Native - L48. Recorded in Idaho.

Missouri Goldenrod

Solidago missouriensis
  • The genus Solidago hosts 120 caterpillar species in the published keystone list for this ecoregion. Genus-level figure, not a count for Solidago missouriensis alone.
  • 22 pollen specialist bee species rely on the genus Solidago. Genus-level figure.

Growing conditions: shade tolerance medium, moisture use low, mature height 3.0 ft, blooms late summer, moderate growth.

Drought tolerance: HighNativity per USDA PLANTS: Native - CAN, Native - L48. Recorded in Idaho.

Rocky Mountain Goldenrod

Solidago multiradiata
  • The genus Solidago hosts 120 caterpillar species in the published keystone list for this ecoregion. Genus-level figure, not a count for Solidago multiradiata alone.
  • 22 pollen specialist bee species rely on the genus Solidago. Genus-level figure.

Growing conditions: shade tolerance high, mature height 1.0 ft, blooms late summer.

Drought tolerance: Low.Nativity per USDA PLANTS: Native - AK, Native - CAN, Native - L48. Recorded in Idaho.

Threenerve Goldenrod

Solidago velutina
  • The genus Solidago hosts 120 caterpillar species in the published keystone list for this ecoregion. Genus-level figure, not a count for Solidago velutina alone.
  • 22 pollen specialist bee species rely on the genus Solidago. Genus-level figure.

USDA lists no drought tolerance value for this species.Nativity per USDA PLANTS: Native - L48. Recorded in Idaho.

Western Aster

Symphyotrichum ascendens
  • The genus Symphyotrichum hosts 108 caterpillar species in the published keystone list for this ecoregion. Genus-level figure, not a count for Symphyotrichum ascendens alone.
  • 16 pollen specialist bee species rely on the genus Symphyotrichum. Genus-level figure.

USDA lists no drought tolerance value for this species.Nativity per USDA PLANTS: Native - CAN, Native - L48. Recorded in Idaho.

Eaton'S Aster

Symphyotrichum eatonii
  • The genus Symphyotrichum hosts 108 caterpillar species in the published keystone list for this ecoregion. Genus-level figure, not a count for Symphyotrichum eatonii alone.
  • 16 pollen specialist bee species rely on the genus Symphyotrichum. Genus-level figure.

USDA lists no drought tolerance value for this species.Nativity per USDA PLANTS: Native - CAN, Native - L48. Recorded in Idaho.

Smooth Blue Aster

Symphyotrichum laeve
  • The genus Symphyotrichum hosts 108 caterpillar species in the published keystone list for this ecoregion. Genus-level figure, not a count for Symphyotrichum laeve alone.
  • 16 pollen specialist bee species rely on the genus Symphyotrichum. Genus-level figure.

USDA lists no drought tolerance value for this species.Nativity per USDA PLANTS: Native - CAN, Native - L48. Recorded in Idaho.

2 further verified ground layer species for Idaho are in the dataset behind the native plant finder.

Idaho natives for a watering restriction

16 of the 40 verified species carry a USDA drought tolerance of High or Medium. That matters in Idaho because a drought tolerant native border is the constructive answer to a watering restriction: once established it holds up on local rainfall, while a cool season lawn browns out and stays brown. If restrictions are in force where you are, the Idaho water restrictions tracker has the current stage, and the Idaho xeriscape guide covers the wider low water approach for the parts of the yard you are converting.

Bitter Cherry

Prunus emarginata
  • The genus Prunus hosts 409 caterpillar species in the published keystone list for this ecoregion. Genus-level figure, not a count for Prunus emarginata alone.

Growing conditions: shade tolerance high, moisture use medium, mature height 80.0 ft, blooms mid spring, moderate growth.

Drought tolerance: MediumNativity per USDA PLANTS: Native - CAN, Native - L48. Recorded in Idaho.

Chokecherry

Prunus virginiana
  • The genus Prunus hosts 409 caterpillar species in the published keystone list for this ecoregion. Genus-level figure, not a count for Prunus virginiana alone.

Growing conditions: shade tolerance high, moisture use medium, mature height 25.0 ft, blooms mid spring, rapid growth.

Drought tolerance: MediumNativity per USDA PLANTS: Introduced - AK, Native - AK, Native - CAN, Native - L48, Native - SPM. Recorded in Idaho.

Rocky Mountain Maple

Acer glabrum
  • The genus Acer hosts 276 caterpillar species in the published keystone list for this ecoregion. Genus-level figure, not a count for Acer glabrum alone.

Growing conditions: shade tolerance medium, moisture use low, mature height 30.0 ft, blooms late spring, rapid growth.

Drought tolerance: MediumNativity per USDA PLANTS: Native - CAN, Native - L48, Probably Introduced - AK. Recorded in Idaho.

Boxelder

Acer negundo
  • The genus Acer hosts 276 caterpillar species in the published keystone list for this ecoregion. Genus-level figure, not a count for Acer negundo alone.

Growing conditions: shade tolerance low, moisture use medium, mature height 60.0 ft, blooms early spring, rapid growth.

Drought tolerance: HighNativity per USDA PLANTS: Native - CAN, Native - L48. Recorded in Idaho.

How to read these numbers

Every caterpillar and specialist bee figure on this page is published by plant genus, not by species. When the page says the genus Quercus hosts a given number of caterpillar species, that is the claim the research supports; attaching the same number to one particular oak would not be. The counts come from the National Wildlife Federation keystone plant sheets, which draw on Dr Doug Tallamy's work at the University of Delaware for Lepidoptera and Jarrod Fowler's work for specialist bees. Nativity, distribution and every growing condition come from the USDA PLANTS Database. Where USDA publishes no value, this page shows none rather than an estimate. The full sourcing, the selection criteria, and the honest case against treating yard scale planting as restoration are all on the methodology page.

For the lawn itself, seasonal timing and grass selection for this state are in the Idaho lawn care guide, and if you are converting an area rather than edging it, the lawn alternatives guide covers ground layer substitutes in more depth.

Common questions

What should I plant first in Idaho?

The canopy layer. bitter cherry is the highest value verified option, because the genus Prunus carries 409 caterpillar species in the Northwestern Forested Mountains keystone list. That is a genus level figure. One tree does more ecological work than any other single choice in a yard.

How many native plants are verified for Idaho?

40 species across the three layers: 21 canopy, 9 understory and 10 ground layer. Each is recorded in Idaho by the USDA PLANTS Database and classified native to this region. Anything USDA flags as introduced here is excluded.

Which Idaho natives handle a watering ban?

16 of the verified species carry a USDA drought tolerance of High or Medium, including bitter cherry, chokecherry, Rocky Mountain maple. Where USDA publishes no drought value for a species, none is shown rather than an estimate.

Do I need to remove my Idaho lawn to plant natives?

No. The edges, borders and tree layer carry nearly all of the ecological value available to an ordinary yard, and none of that requires changing how the turf itself is used. Adding one canopy tree and one planted border is the realistic version of this for most homeowners.

Sources: USDA NRCS PLANTS Database for nativity, distribution and growing characteristics, read 2026-08-18. National Wildlife Federation Keystone Native Plants for genus level caterpillar and specialist bee counts.