Quick answer: 33 native Nevada plants have a recorded bloom range that includes May.
33 species
- Alderleaf mountain mahogany Cercocarpus montanus · 9 states
- Apache plume Fallugia paradoxa · 6 states
- Bearberry Arctostaphylos uva-ursi · 16 states
- Bebb willow Salix bebbiana · 2 states
- Bog laurel Kalmia polifolia · 5 states
- Broadleaf cattail Typha latifolia · 11 states
- Buffalograss Bouteloua dactyloides · 9 states
- Cardinal flower Lobelia cardinalis · 37 states
- Chokecherry Prunus virginiana · 35 states
- Creeping Oregon grape Mahonia repens · 11 states
- Firecracker penstemon Penstemon eatonii · 3 states
- Gambel oak Quercus gambelii · 6 states
- Gray alder Alnus incana · 12 states
- Indian blanket Gaillardia pulchella · 18 states
- Joshua tree Yucca brevifolia · 3 states
- Old man's whiskers Geum triflorum · 8 states
- Palmer's penstemon Penstemon palmeri · 3 states
- Peachleaf willow Salix amygdaloides · 3 states
- Prairie Junegrass Koeleria macrantha · 15 states
- Quaking aspen Populus tremuloides · 24 states
- Red baneberry Actaea rubra · 22 states
- Red-osier dogwood Cornus sericea · 22 states
- Rocky Mountain bee plant Peritoma serrulata · 22 states
- Rocky Mountain iris Iris missouriensis · 7 states
- Scarlet globemallow Sphaeralcea coccinea · 5 states
- Silver buffaloberry Shepherdia argentea · 11 states
- Smooth sumac Rhus glabra · 34 states
- Utah serviceberry Amelanchier utahensis · 3 states
- Utah sweetvetch Hedysarum boreale · 3 states
- Virginia creeper Parthenocissus quinquefolia · 27 states
- Wax currant Ribes cereum · 2 states
- Winterfat Krascheninnikovia lanata · 6 states
- Wyoming Indian paintbrush Castilleja linariifolia · 4 states