
Saltcedar
Saltcedar is Nebraska's newest noxious weed, designated a noxious weed
on January 1, 2005. It grows along rivers and streams, in salt marshes,
flood plains, and lakeshores. In Nebraska, it is present on the Platte,
Missouri, and Republican Saltcedar is non-native, has no natural enemies, and can quickly form a monoculture along lakes and waterways. Native riparian species are quickly displaced by saltcedar, which in turn causes displacement of native birds and animals that generally feed on seeds and leaves of native and beneficial plants. Once established the plants become so thick that cattle will not graze the area. Saltcedar has many characteristics that make it a very aggressive plant in wetland areas. The seeds are extremely tiny and are similar in size and color to pepper. A tuft of hairs at the tip of the seed aids in dispersal by wind and water. A mature tree can produce up to 500,000 seeds per year. The seeds have a very high intial viability and can germinate as soon as 24 hours after dispersal. Seed is short-lived, however, usually remaining viable for less than a few months. Once a seed germinates, it can grow rapidly to a small flowering shrub in one to two years.
INFESTATION PICTURES Plant Facts Common Name : Saltcedar (tamarix, tamarisk) Growth Form : Shrub or small tree Life Span : Perennial Origin : Eurasia Flowering Dates : April - September Reproduction : Seeds, root sprouts, buried stems Height : 1 - 6 m ( 3.3 - 20 ft) Inflorescence : Racene (1.5-7.5 cm long, 2.5 - 4 mm wide), numerous in panicles, flowers many; bracts triangular to narrowly trullate (longer than the pedicels), tips pointed, margins denticulate. Flower : White to deep pink corolla, petals 5; petals obovate to broadly elliptic (1-1.8 mm long); sepals 5, green, toothed. Fruit : Capsules, lance-ovoid (3-4 mm long), narrowed in to a beak, tuft of soft bristles at the tip, purplish-red to yellowish-green; seeds many. Seed : Minute, tuft of hairs at the tip. Leaves : Alternate, imbricate; blades lanceolate to ovate-lanceolate (1-4 mm long), tips pointed, margins membranaceous, bluish-green to grayish-green. Twigs : Upright or spreading, forming thickets; bark smooth and glabrous becoming ridged and furrowed with age. Underground : Taproot, deep, extensive. Where Found : Western Great Plains in salt marshes, flood plains,lake shores, and along rivers and streams. Saltcedar tolerates alkaline and saline conditions. Uses and Values: Saltcedar has little forage value for livestock or wildlife. It provides nectar and pollen for bees and nesting cover for morning doves. It is sometimes planted as an ornamental and for erosion control. Poisonings : None. Historical : Saltcedar was introduced into the United States in the 1820's. Other : It uses a large amount of water, and dense stands may cause springs and small streams to dry up. Seeds of saltcedar are spread by water and wind.
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