late summer

Blooming toward the end of July and into August

Showing 1–12 of 128 results

  • Achillea millefolium / yarrow

    • common - white umbrella-type flower
    • feathery leaves
    • clonal; often found in patches

  • Agastache urticifolia / western horsemint

    • short or tall flower heads ranging from pale to deep purple
    • square stems, opposite leaves
    • minty aroma
    • common along trails, especially in sun

  • Agropyron cristatum / crested wheatgrass

    • cool season grass growing in dense tufts
    • easily recognized by planar spike
    • spikelets overlap and are angled with respect to the stem
    • common

  • Allium geyeri / Geyer’s onion

    • smells like onions
    • magenta (occasionally white) flowers on ca. 15 inch stem
    • each flower urn-shaped with flared, pointy tips; yellow anthers
    • leaves persistent during flowering
    • rocky slopes in brush and pines, sometimes in dense stands

  • Amaranthus retroflexus / pigweed

    • green bottle-brush inflorescence
    • accomplished weed on disturbed sites (including road & driveway cracks)
    • often in gardens, farm fields (edges), roadsides

  • Anticlea elegans / mountain death camas

    • cream to greenish-white flowers; overall hexagonal appearance
    • branched flowering stem with multiple flowers not tightly packed
    • 6 tepals (petals + sepals), greenish-yellow nectar glands
    • grass/lily-like leaves
    • blooms in summer (July/August)

  • Arctium minus / lesser burdock

    • purple to pink to lavender thistle-like flowers with hooked bracts
    • nasty hooked seed heads
    • very large, heart-shaped leaves
    • found in a wide variety of disturbed areas

  • Arnica cordifolia / heartleaf arnica

    • yellow, daisy-like flowers; 1-2 per shoot
    • opposite, heart shaped leaves; long petioles; 2-4 pair per stem
    • large clonal colonies with many flowering and non-flowering shoots
    • the dominant ground cover  in moderate shade in many forests

  • Artemisia absinthium / wormwood

    • deeply lobed leaves; grey-green (hairy); aromatic (like sage)
    • stems to 4' tall; up to 20 per plant
    • small clusters of teeny yellow flowers in drooping heads
    • disturbed areas and may be weedy

  • Artemisia cana / silver sagebrush

    • Low perennial, silvery shrub
    • Highly aromatic, like sagebrush
    • Entire leaves - no lobes
    • Nondescript, inconspicuous flowers in small clusters with leaf-like bracts
    • Grows in more moist habitat than other Artemisia spp.

  • Artemisia ludoviciana / white sage

    • low, spreading perennial - up to 3 feet tall
    • silvery leaves and stems (hairy)
    • leaves lance shaped, but sometimes lobed
    • shoots die back in winter
    • aromatic

  • Artemisia tridentata / mountain big sagebrush

    • medium-sized grey-green shrub
    • highly aromatic
    • tall, spikey inflorescences with many clusters of invisible flowers
    • limited to drier habitats (not the Valley basin)

Showing 1–12 of 128 results