![]() ![]() Hypericum perforatum is a perennial weed that grows in many temperate regions throughout the world, including parts of Eurasia, North and South America, Australia, and South Africa. Javier martin, Public domain, via Wikimedia Commons In late spring and early summer, the Spanish Brooms produce a multitude of fragrant yellow pea-like flowers that grow on short stalks on both sides of the main stem. Its leaves are green, tiny, elongated, oval, and have smooth edges. It has thin cylindrical long stems with few branches which are green and soft when young and become woody branches at maturity. Spartium junceum usually reaches up to 13 ft (4 m) in height and is frequently found on roadsides, grasslands, and wetlands. However, in some areas, it has managed to propagate uncontrollably and has thus been introduced on the list of noxious invasive species. Spanish broom is used as an ornamental plant in several regions of the world with a Mediterranean climate. It is popularly known as Spanish broom or rush broom. Spartium Junceum is a perennial shrub species native to the Mediterranean in southern Europe, southwest Asia, and northwest Africa. Garden Loosestrife (Lysimachia Vulgaris)Ī. ![]() Jacobaea vulgaris has a long blooming period and produces yellow flowers that grow in dense clusters in the upper part of the plant. They also have a distinctively unpleasant odor. The leaves are pinnately lobed and the end lobe is blunt. Later, they develop upright stems, that can reach a height of up to 2 meters. In its early stages, a jacobaea vulgaris plant emerges as basal rosettes with ruffled leaves. Throughout the season, a single plant can produce up to 2,500 flowers. However, ragwort also plays a significant role in the production of nectar, which feeds many species of pollinating insects. To its bad reputation also contributes the fact that it contains toxic compounds that can sicken the livestock. Some of the common names of this plant include ragwort, common ragwort, Jacobaea, or tansy ragwort.Īlthough ragwort is considered a wildflower in some areas, it is also considered a noxious weed in other regions due to its invasive nature. It usually grows in open and dry regions such as pastures, trails, and along roadsides. Jacobaea vulgaris is a common wildflower indigenous to northern Eurasia. Zell, CC BY-SA 3.0, via Wikimedia Commons These compounds are toxic if ingested and can cause liver damage in herbivores.ĭuring flowering, the plant can reach a height of about 3 ft (90 cm). The foliage and other parts of butterweed are known to contain alkaloids. The leaves are green, alternate, either simple-pinnate or deeply pinnatifid, with a larger terminal leaflet and smaller lateral leaflets. Its blooming period usually extends from April to June. In the early stages, Packera glabella develops a low rosette of basal leaves, and during the spring, it raises a hollow stalk that terminates with a cluster of yellow, daisy-like flowers. It is often known as butterweed, cressleaf groundsel, or yellowtop.īutterweed is frequently found growing in large groups in places with high humidity, including agricultural fields, near ponds, swamps, forests, stream banks, roadsides, etc. Packera glabella is an annual weed native to central and southeastern North America. Butterweed (Packera Glabella)Ĭongaree National Park from Hopkins, SC, USA, CC BY 2.0, via Wikimedia Commons Wintercress produces small elongated green fruits which carry many tiny seeds. The leaves growing on the stalk progressively get smaller towards the top and have an almost oval shape. The lower ones have a large, rounded end lobe and 1 to 4 pairs of smaller lateral lobes. The leaves are green, pinnately-lobed to deeply-toothed. Its flowering period usually lasts from April to July. The flowers have four petals and are lightly fragrant. The first year it produces a rosette of basal leaves, while the second year will grow upright stalks that end with dense clusters of small yellow flowers. It is a well-adapted weed and can grow anywhere from roadsides to hay fields, waste ground, rocky outcrops, stony slopes, and more. Wintercress is a moderately tall plant that may reach a maximum height of 24 to 32 inches (60-80 cm). Krzysztof Ziarnek, Kenraiz, CC BY-SA 4.0, via Wikimedia Commonsīarbarea vulgaris, popularly known as wintercress, yellow rocketcress, along several other names, is a biennial weed native to Eurasia and North Africa. ![]()
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