Pigweed
Amaranthus retroflexus
Monoecious annual, upright herb with a rough, hairy stem, stout, bristly whitish-green flowering spi… read more
Annual herb with clusters of very small greenish-yellow flowers on a strong, bushy, upward-reaching,… read more
The large, tapered flower clusters of this 2-5 ft. perennial are made up of many tiny white flowers,… read more
Native herbaceous annual.
Habit: many-branched, coarse, bushy; hairy stems, green to red; to 1-3 ft… read more
Native annual; herbaceous or subshrub.
Habit: erect and coarse, with rough, hairy stems.
Height: … read more
Herbaceous perennial.
Habit: spreading, mat-forming, with 1-3 unbranched erect stems; may be faintl… read more
Mugwort
Artemisia vulgaris
Introduced perennial herb or subshrub; spreads by rhizome or self-seeds; may form large colonies.
… read more
Native perennial herb or subshrub.
Habit: large, bushy, with many leafy stems; parts of plant prod… read more
Horseweed
Conyza canadensis (Erigeron canadensis)
Native herbaceous annual or short-lived perennial.
Habit: slender, erect, weedy, coarse; leafy stem… read more
Dog Fennel
Eupatorium capillifolium
Native annual or perennial. Spreads by seed and root to form large colonies. Leaf and flower have un… read more
Lanceleaf Goldenrod
Euthamia graminifolia (Solidago graminifolia)
Native perennial herb; spreads by rhizome, may form large colonies.
Habit: erect, sometimes bushy; … read more
Native annual or biennial.
Habit: thin and weedy; erect, smooth, leafy stems with milky sap.
Heigh… read more
A spike of rounded, rayless, pinkish to lavender (sometimes white) flower heads along stiff erect st… read more
The slender, unbranched stem of this perennial gayfeather grows 3-5 ft. tall. Its narrow, needle-li… read more
This perennial's stiff, upright, unbranched stems, 1-3 ft. tall, grow in wide-spreading clumps. The… read more
Native herbaceous perennial. Taprooted.
Habit: erect, with one or several unbranched stems.
Height… read more
Showy, spiky purple flowers.
Habit: native perennial herb; with a single erect, hairy, leafy stem, … read more
Native perennial herb.
Habit: erect; tall, leafy, smooth or downy stems rise from a basal rosette; … read more
Native herbaceous perennial; clump-forming.
Habit: upright, slender, leafy, rigid; single or multip… read more
Scaly Gayfeather or Blazing Star may have one or several stems, each erect, unbranched, and 10-24 in… read more
Native herbaceous perennial.
Habit: erect
Height: 1.5-5 ft (40-150 cm).
Leaf: very thin, 4-12 in … read more
Native herbaceous perennial; semi-evergreen.
Habit: tall, coarse, with unbranched hairy stem.
Hei… read more
An erect, leafy stem with nodding, rayless, yellow flower heads on usually bent stalks and arranged … read more
Tall Goldenrod
Solidago altissima (Solidago canadensis var. scabra)
Small yellow flower heads on outward-arching branches forming a pyramidal cluster atop a grayish, do… read more
An elongated spike of short-stalked flower heads with white to yellowish-white rays surrounding a ye… read more
Native herbaceous perennial.
Habit: up to ten thin arching bluish stems, 1'-3.5' tall.
Leaves: na… read more
Native herbaceous perennial. Spreads by rhizome; may form large colonies.
Habit: strong and upright… read more
Native herbaceous perennial from single or multiple stems, 3-7' tall. A simple caudex (enlarged stem… read more
Bright yellow flowers held in a triangular array on upright hairy stems.
Habit: native perennial he… read more
This woodland goldenrod, with erect, somewhat zigzag stems, bears small flower heads on short axilla… read more
Native herbaceous perennial.
Habit: Solitary or few stemmed, unbranched.
Height: 1-4 ft (30-120 c… read more
Clumps of slender, gray-downy stems produce terminal, one-sided, yellow plumes that gives the perenn… read more
Native herbaceous perennial. Spreads by rhizome to form clumps.
Habit: tall, with up to 5 smooth st… read more
Tall, rough, hairy stem bears divergent, or arching, branches with small, light yellow flower heads … read more
Habit: native perennial herb; very salt-tolerant; 1-20 or more erect, leafy stems rise from an everg… read more
Narrow Goldenrod
Solidago simplex (Solidago spathulata)
Native perennial herb or subshrub; variable.
Habit: several smooth erect unbranched stems rise fro… read more
A stout stem, smooth below and rough above, bearing a dense, pyramidal or club-shaped, terminal clus… read more
Slender-stemmed plant, 2-4 1/2 ft. tall. Thin, coarsely toothed leaves. Flowers occur on the upper… read more
Woolly Ironweed is a 10-30 in. high clump of gray-woolly stems and leaves. Flowers lack petals, but… read more
Common in the deep conifer forests of the West Coast, this plant has frothy white flower spikes abov… read more
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