|
Saltcedar
Tamaricaceae - Tamarix Family
Tamarix ramosissima Ledeb.

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
Rivers. Saltcedar is a noxious weed in several states.
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.
The plant quickly establishes along, woody taproot. The taproot of
a mature saltcedar tree can descend as much as 50 feet into the soil profile. The root
system is capable of producing many new shoots if the top growth is removed by
mechanical methods or fire.
A large saltcedar tree can absorb 200 gallons of water per day, giving heavy
infestations the ability to dry up creeks and small lakes. Each year, more tall dense
stands of saltcedar have the potential to use over 9 acre feet of water for every acre
of infestation.
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
|