Melinis repens (Willd.) (Natal grass) is an erect grass that grows to 28 in tall and has attractive long reddish or pink silky hairs on the triangular fruit at maturity, fading to silvery white with age. It is an annual species that sometimes perennates in warmer climates. In California, Natal grass is almost entirely perennial. […]
Euphorbia myrsinites L. (myrtle spurge) is an evergreen perennial that is native to Eurasia and has been widely introduced as an ornamental. Plants typically grow to 4-8″ tall from a woody base. Stems are ascending or trailing. Oval, blue-green, fleshy leaves are arranged in close spirals around stems. Plants bloom in spring; flowers are inconspicuous and […]
Redpurple ragwort (Senecio elegans L; Asteraceae) is an annual herbaceous plant native to Cape region of South Africa. Leaves and stems are covered in dense glandular hairs; flower heads are comprised of purple ray- and yellow disk florets; plants can grow to a height of 1m. It has been introduced across Europe as an ornamental. […]
Lythrum junceum (creeping loosestrife) is a perennial herb with spikes of attractive purple flowers that is native to Europe and the Mediterranean region. It is associated with freshwater wetlands and riparian habitat. Outside of its native range, it has been found in Australia and New Zealand and occurs in the Azores and Madeira Islands, where […]
Potentilla recta (sulphur cinquefoil) is a perennial forb (family: Rosaceae) listed as a noxious weed in several states in the western US, including California, Nevada, Oregon, Washington, Colorado, and Montana. It is native to the eastern Mediterranean, has naturalized nearly all lower US states, and is especially well established in the Pacific Northwest. Sulphur cinquefoil […]
Hieracium aurantiacum (Orange hawkweed) is an herbaceous perennial forb that reproduces by seed, rhizomes, and stolons. It is native to northern and central Europe and is common along roadsides, meadows and in forest understories. Once established, Hieracium aurantiacum can spread quickly, excluding native species. It was introduced in 1875 to the US in Vermont as a […]
Asparagus aethiopicus (Asparagus fern) is a perennial plant (family Asparagaceae) that is native to South Africa and has been used extensively in the horticulture industry as a garden ornamental. It is characterized by having a low stature and attractive green branches with small, linear leaves, white flowers, and fruits that are red berries. Asparagus aethiopicus […]
Arum italicum (Italian Arum) is a tuber-forming perennial in the family Araceae that has been used extensively in the horticultural industry. It is native to much of Europe, northern Africa, and western Asia and has naturalized throughout the wetter regions of the western U.S. as well as locally in the eastern U.S., in Australia, New […]
Perennial sweet pea (Lathyrus latifolius; Fabaceae) is an herbaceous perennial vine in the pea family that has a long history in horticulture as an ornamental. It is native to Europe, but has naturalized throughout the United States, in Australia, and beyond its historic native range, across northern Africa and southern Europe. In California, this species […]
Acacia saligna (golden wreath wattle, orange wattle) is a shrubby tree in the pea family (Fabaceae) that is native to Australia. It is grown as an ornamental and has become naturalized in coastal and southern California as well as in other Mediterranean climates in South Africa, parts of southern Europe, and where it is not native in […]