9/27/2023 0 Comments Sweet broom complete pruningSeed germination is probably similar to related broom species such as Scotch broom (Cytisus scoparius). Seeds are released ballistically from the pod, then further dispersed by animals and water runoff along the ground. It flowers in late March through May on the coast, resulting in copious production of long-lived seeds that mature in June and July. Portuguese broom becomes reproductive at two to three years of age at a height of one and a half to three and a third feet (40-100 cm). Like Scotch broom, it is fire prone andĬapable of carrying fire to the tree canopy layer. Its seeds are toxic to ungulates,Īnd mature shoots are unpalatable. Species, both herbs and other woody species. In mud clinging to road grading or maintenance machinery. Seeds may be further dispersed by ants, animals, by rain wash on open ground, or Portugueseīroom probably spreads like Scotch broom that is, after ballistic dispersal, Introduced to the Marin Headlands, Marin County, in the 1960sįor landscaping and slope stabilization, it escaped and naturalized. WHERE DID IT COME FROM AND HOW IS IT SPREAD? In the San Francisco Bay Area it is particularly common It is capable of invading and establishingĭense populations in coastal prairie, coastal scrub, oak savannah, and It is found occasionally in other parts of the Bay area, and hasīeen reported in Mendocino and San Diego counties, with probable occurrence inĬentral and south coastal counties. Headlands, Marin County, where it forms dense cover, one mature shrub per two It currently occupies sixty-five acres in the Marin Portuguese broom is much less common than Upper branches sessile, lower branches contain short petioled leaflets.įlowers:1-2 pea-like flowers cluster between leaf base and stem on pedicels 5-10 mm Generally smooth (glabrous) lower leaflet surface silky-hairy. Leaves: more abundant at outer ends of actively growing branches, giving the plant a broom- or antler-like appearance leaflets 0.3-0.5 in (5-15 mm) long and obovate (pointed at both ends). In windy locations growth is more compact and stunted, to 3-5 ft tall. Plants become more branched and broaden with age, attaining a height of 7-10 ft (2-3 m). Stems: young plants (1-3 years) have an upright form (erect) dominated by a leading apical stem. Less than one-half inch, whereas Portugese broom pedicels are greater thanįabaceae. Of French broom contain four to ten flowers per cluster with flower pedicels Than those of French broom ( Genista monspessulana). On the stem, the flat-hairy calyx (sepals), and the densely white-hairy fruit Scoparius) are the paler yellow flower color, the greater number of angles Main features that distinguish this species from Scotch broom ( Cytisus Mature fruit pods are densely white-hairy, and each contains several seeds. Pale yellow, pea-like flowers arise from the leaf axils singly or in pairs. Stems are covered sparsely by small leaves consisting of one to three leaflets. That are silky-haired when young and become more or less smooth when mature. Is a shrub six to nine feet tall with many slender eight- to ten-angled stems
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