Department of Horticulture

Hardy Plants for Waterwise Landscapes

Cosmos spp. (© V.I. Lohr)


Scientific name

Common name

Clarkia amoena N Godetia
Cleome hasslerana Spider flower
Cosmos spp. @ Cosmos
Eschscholzia californica @ California poppy
Gaillardia pulchella Blanket flower
Gazania spp. Gazania
Glandularia ×hybrida Verbena
Gomphrena globosa Globe amaranth
Helianthus annuus N@ Sunflower
Helichrysum bracteatum
Ipomoea spp. Morning glory
Lantana spp. ● Lantana
Lavatera trimestris Mallow
Limonium sinuatum
Lobularia maritima Sweet alyssum
Melampodium paludosum Bush zinnia
Papaver spp. @ Poppy
Petunia ×atkinsiana Petunia
Portulaca grandiflora Moss rose
Sanvitalia procumbens Creeping zinnia
Senecio cineraria Dusty miller
Tagetes tenuifolia Signet marigold
Tithonia rotundifolia Mexican sunflower
Tropaeolum majus Nasturtium


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Scientific and common names are listed for each plant.  Plants are listed in alphabetical order by scientific name.

If the scientific name has a link, it leads to a page with photos and cultural information. If the common name has a link, it leads to photos, but not to cultural information. 

Key to symbols

spp. = More than one species is water-conserving

● = Suitable for dry shade; amount of shade varies

N = Native to Washington or Idaho

@ = May reseed or spread


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