What's in Bloom?
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What’s in Bloom? A guide to wildflower watching on the Zumwalt Prairie Preserve The Zumwalt Prairie is home to nearly 500 plant species belonging to 69 families, most of which are native to the area. Some of the more common wildflower families include asters (Asteraceae), snapdragons (Scrophulariaceae), roses (Rosaceae), peas (Fabaceae), mustards (Brassicaceae), carnations (Caryophyllaceae), lilies (Liliaceae), and buckwheats (Polygonaceae). The list below was created from years of observations made by Conservancy staff and volunteers and describes the flowering times of numerous wildflower species on the Zumwalt Prairie Preserve ordered from earliest to latest blooming. The list is not comprehensive but does include many of the most common, showy flowers on the preserve. The complete Zumwalt Prairie Plant List can be found on the Conservation Gateway at nature.ly/zumwaltprairie (see page Reports, Maps, Data). Common Name Scientific Name Flowering Period sagebrush buttercup Ranunculus glaberrimus var. glaberrimus Late February - Early May red besseya Besseya rubra Early April - Late May yellow fritillary Fritillaria pudica Early April - Late May bigseed biscuitroot Lomatium macrocarpum Early April - Late May cous biscuitroot Lomatium cous Early April - Early June lanceleaf springbeauty Claytonia lanceolata var. lanceolata Late April - Late May small bluebells Mertensia longiflora Late April - Late May bulbous woodland-star Lithophragma glabrum Late April - Late June dwarf hesperochiron Hesperochiron pumilus Early May inflated grasswidow Olsynium douglasii var. inflatum Early May Bonneville shootingstar Dodecatheon conjugens Early May - Late May common dandelion Taraxacum officinale Early May - Late May creeping barberry Mahonia repens Early May - Late May darkthroat shootingstar Dodecatheon pulchellum Early May - Late May hairy clematis Clematis hirsutissima Early May - Early June arrowleaf balsamroot Balsamorhiza sagittata Early May - Early June cushion phlox Phlox pulvinata Early May - Early June Virginia strawberry Fragaria virginiana Early May - Early June old man's whiskers Geum triflorum Early May - Early June largehead clover Trifolium macrocephalum Early May - Early June Wallowa onion Allium tolmiei var. platyphyllum Early May - Early June nineleaf biscuitroot Lomatium triternatum Early May - Late June hoary balsamroot Balsamorhiza incana Early May - Late June Douglas' buckwheat Eriogonum douglasii Early May - Late June dwarf yellow fleabane Erigeron chrysopsidis Early May - Early July lambstongue ragwort Senecio integerrimus Early May - Early July shaggy fleabane Erigeron pumilus Early May - Late July parsnipflower buckwheat Eriogonum heracleoides var. angustifolium Early May - Late July hookedspur violet Viola adunca Early May - Late September yellow evening-primrose Oenothera flava Late May spiny phlox Phlox hoodii Late May Canadian milkvetch Astragalus canadensis Late May woodland strawberry Fragaria vesca Late May wholeleaf saxifrage Saxifraga integrifolia Late May sunflower mule-ears Wyethia helianthoides Late May ballhead waterleaf Hydrophyllum capitatum Late May - Early June low pussytoes Antennaria dimorpha Late May - Early June Cusick's Indian paintbrush Castilleja cusickii Late May - Early June harsh Indian paintbrush Castilleja hispida Late May - Late June pearly pussytoes Antennaria anaphaloides Late May - Late June elkweed Frasera speciosa Late May - Late June sticky cinquefoil Potentilla glandulosa ssp. glandulosa Late May - Late June Cuddy Mountain onion Allium fibrillum Late May - Late June common woolly sunflower Eriophyllum lanatum Late May - Late June tobacco root Valeriana edulis var. edulis Late May - Late June Tolm's onion Allium tolmiei var. tolmiei Late May - Late June rush pussytoes Antennaria luzuloides Late May - Late June western stoneseed Lithospermum ruderale Late May - Late June roundleaf alumroot Heuchera cylindrica Late May - Late June largeflower triteleia Triteleia grandiflora var. grandiflora Late May - Late June scarlet gilia Ipomopsis aggregata ssp. aggregata Late May - Late June globe penstemon Penstemon globosus Late May - Early July meadow deathcamas Zigadenus venenosus Late May - Early July delphinium Delphinium nutallii Late May - Early July pale Wallowa Indian paintbrush Castilleja oresbia Late May - Early July littleflower penstemon Penstemon procerus Late May - Early July twin arnica Arnica sororia Late May - Early July small camas Camassia quamash ssp. breviflora Late May - Early July Sheldon's milkvetch Astragalus sheldonii Late May - Early July whitestem frasera Frasera albicaulis Late May - Early July stiff yellow Indian paintbrush Castilleja lutescens Late May - Early July tapertip hawksbeard Crepis acuminata Late May - Late July slender cinquefoil Potentilla gracilis var. flabelliformis Late May - Late July silky lupine Lupinus sericeus Late May - Late September sticky purple geranium Geranium viscosissimum Late May - Late September littleleaf pussytoes Antennaria microphylla Early June slender phlox Phlox gracilis ssp. humilis Early June hairy Indian paintbrush Castilleja tenuis Early June - Late June veiny meadow-rue Thalictrum venulosum Early June - Late June slender hawksbeard Crepis atribarba ssp. originalis Early June - Late June Rydberg's penstemon Penstemon rydbergii Early June - Late June bush penstemon Penstemon fruticosus Early June - Late June nodding microseris Microseris nutans Early June - Early July pinkfairies Clarkia pulchella Early June - Early July thinleaved owl's-clover Orthocarpus tenuifolius Early June - Early July rough eyelashweed Blepharipappus scaber Early June - Early July wormleaf stonecrop Sedum stenopetalum Early June - Early July ballhead sandwort Arenaria congesta Early June - Early July western yarrow Achillea millefolium var. occidentalis Early June - Early August Woods' rose Rosa woodsii Late June tall groundsel Senecio hydrophiloides Late June rosy pussytoes Antennaria rosea Late June varileaf phacelia Phacelia heterophylla Late June tiny trumpet Collomia linearis Late June Veronica spp. Veronica spp. Late June largeleaf avens Geum macrophyllum Late June threadleaf phacelia Phacelia linearis Late June spearleaf stonecrop Sedum lanceolatum Late June - Early July nettleleaf giant hyssop Agastache urticifolia Late June - Early July white mariposa lily Calochortus eurycarpus Late June - Early July Blue Mountain buckwheat Eriogonum strictum Late June - Early July largeflower goldenweed Pyrrocoma carthamoides var. cusickii Late June - Early July meadow hawkweed Hieracium caespitosum Late June - Early July tapertip onion Allium acuminatum Late June - Early July Oregon silene Silene oregana Late June - Early July Oregon checkerbloom Sidalcea oregana Late June - Late July Venus penstemon Penstemon venustus Late June - Late July velvet lupine Lupinus leucophyllus Late June - Early August Idaho gumweed Grindelia nana Late June - Late August Palouse thistle Cirsium brevifolium Late June - Late August biennial cinquefoil Potentilla biennis Early July scabland penstemon Penstemon deustus Early July Canada goldenrod Solidago canadensis Early July - Late July seep monkeyflower Mimulus guttatus Early July - Late July simple campion Silene scouleri Early July - Late July Spalding's silene Silene spaldingii Early July - Late July common St. Johnswort Hypericum perforatum Early July - Late August Missouri goldenrod Solidago missouriensis var. missouriensis Early July - Late August sulphur cinquefoil Potentilla recta Early July - Late September Deptford pink Dianthus armeria Early July - Early October sagebrush mariposa lily Calochortus macrocarpus Late July Riggin's penstemon Penstemon triphyllus Late July seabluff catchfly Silene douglasii Late July aspen fleabane Erigeron speciosus Late July western meadow aster Symphyotrichum campestre var. campestre Late July lanceleaf figwort Scrophularia lanceolata Late July hooded ladies'-tresses Spiranthes romanzoffiana Late July - Early August Gardner's yampah Perideridia gairdneri Late July - Early August pleated gentian Gentiana affinis Late July - Late August NE Oregon Field Office For questions or comments please contact Rob Taylor ([email protected]) .