non-native
Showing 1–12 of 55 results
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Achillea millefolium / yarrow
- common - white umbrella-type flower
- feathery leaves
- clonal; often found in patches
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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
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Allium schoenoprasum / chives
- globe-shaped umbels of pink flowers with darker midveins (stripes)
- hollow, tubular leaves and flower stalks
- smells like onions
- grows from bulbs in clumps or sometimes individually
- wild in wetlands, fens, meadows; cultivated in gardens
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Alyssum desertorum / desert madwort
- short crucifer with teeny leaves, no basal rosettes
- short inflorescence with numerous teeny yellow flowers... short-lived
- seed capsules mature by mid-July, ca. 40/stalk
- disturbed sites of any kind
- often in dense populations
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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
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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
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Barbarea vulgaris / yellow rocket
- showy yellow brassica with relatively large flowers
- leaves deeply lobed with larger terminal lobe, smaller toward top of stems
- common on roadsides and waste places in spring
- siliques about an inch long and curving upward, with beaks and pedicels
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Bassia scoparia / burningbush
- large, annual herb (forb)
- leaves long-ish and narrow
- inflorescence a highly branched spike with teeny green/yellow flowers
- may form huge, invasive colonies
- whole plant turns red in fall
- a tumbleweed
- especially in disturbed areas and wastelands in the Valley
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Beteroa incana / hoary alyssum
- dense clusters of teeny white flowers
- 4 petals, each with a notch
- fruit is a short, fat-ish seed pod (silicle)
- found in pastures and all manner of disturbed habitats
- toxic to horses
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Bromus inermis / smooth brome
- clump forming grass but clonally spreading
- erect, leafy
- in winter, leaves curl up (like ribbon)
- florescence is a nodding panicle, standing well above leaves
- spikelets bronze/purple at maturity; anthers yellow
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Bromus tectorum / cheatgrass
- short bunchgrass, 2 to 30 in at floweirng
- panicle with all florets to one side; long awns
- early season growth, flowering, seed drop
- florets green, turning purple as seeds mature
- highly invasive!
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Capsella bursa-pastoris / shepherd’s purse
- small crucifer with terminal clusters of teeny white flowers
- rosette of small, maybe toothed, leaves
- very distinctive, notched, triangular fruits - like shepherd's "purses"
- found pretty much anywhere that has/had bare soil
Showing 1–12 of 55 results