Common Rush (Effusus)

The Common Rush (Effusus) is generally described as a perennial graminoid. This is native to the U.S. (United States) has its most active growth period in the spring . The greatest bloom is usually observed in the summer, with fruit and seed production starting in the summer and continuing until fall. Leaves are not retained year to year. The Common Rush (Effusus) has a long life span relative to most other plant species and a moderate growth rate. At maturity, the typical Common Rush (Effusus) will reach up to 6.6 feet high, with a maximum height at 20 years of 0 inches.

The Common Rush (Effusus) is easily found in nurseries, garden stores and other plant dealers and distributors. It can be propagated by seed, sprigs. It has a slow ability to spread through seed production and the seedlings have high vigor. Note that cold stratification is not required for seed germination and the plant cannot survive exposure to temperatures below -38°F. has medium tolerance to drought and restricted water conditions.

Uses of : Landscaping, Medicinal, Culinary, etc.

Ethnobotanic: Coiled basketry prevails in Southern California, with the mottled yellowish brown of soft rush providing a natural colored and variegated background (Turnbaugh and Turnbaugh 1986). Juncus stems are used in the coiled baskets of Southern California tribes such as the Cahuilla, Luiseño, Chumash, Diegueño, Agua Caliente, Gabrieliño, Juaneño, Death Valley Shoshone, and Fernandeno (Barrows 1967; Murphey 1959). The foundation material is made of Juncus balticus and Juncus effusus, and the sewing material is made of Juncus textilis. The Quinalt of western Washington used soft rush for plaiting tumplines for baskets (Gunther 1973). They also mixed soft rush with cattails to make string. The Snoqualmie used the stalks for tying things.

The early sprouts of soft rush were sometimes eaten raw by the Snoqualmie of Washington (Gunther 1973). Juncus shoots were eaten raw, roasted in ashes, or boiled by Maidu, Luiseño, and others (Strike 1994). Owens Valley Paiute ate the seeds. Soft rush stalks was gathered in wetlands and was eaten on occasion by the Nlaka'pamux and Lillooet people of British Columbia (Kunlein and Turner 1991).

Soft rush, also called candle rush by the Japanese, is used for tatami mats. Large mats were also made by

California Indians by piercing holes in Juncus and threading cordage through the holes so the Juncus stalks were aligned side-by-side (Strike 1994). These flexible mats could be rolled and stored when not needed.

Wildlife: A wide range of mammal and avian species depend on Juncus species for food and habitat (Hoag and Zierke 1998). Waterfowl, songbirds, and small mammals such as jack rabbits, cottontail, muskrat, porcupine, and gophers (Martin 1951) eat rush seeds. Rushes provide habitat for amphibians and spawning areas for fish. Muskrats feed on the rootstalks of soft rush, and various wetland wading birds find shelter among the stems.

Livestock: Cattle will graze Juncus effusus late in the season after more palatable plants are eaten. Rushes tend to be resistant to grazing pressure and fairly unpalatable to cattle, so tend to increase in species composition in pastures.

Erosion & Restoration: Rushes provide the following conservation uses: erosion control, sediment accretion and stabilization, nutrient uptake and transformation, wildlife food and cover, restoration and creation of wetland ecosystems, and wastewater treatment applications. The rhizomatous nature, nitrogen fixation capabilities, dense root system, and phenotypic plasticity to flooding and drought stress provide high soil and slope stabilization capabilities, particularly in areas with flooded soils or fluctuating hydrology. The rhizomes form a matrix for many beneficial bacteria, making this plant an excellent addition for wastewater treatment. This species can have invasive characteristics in certain situations.

General Characteristics

General: Rush Family (Juncaceae). Soft rush is a rhizomatous, perennial herb with a large, tufted, cespitose growth form. Juncus effusus stems are stout but soft, 5-15 dm tall and 1.5-3 mm wide. The basal sheaths are bladeless or the inner ones tipped with a short awn, the edges usually overlapping nearly to the subtruncate or emarginate tip, with the veins converging at the tip. The leaves are dull chocolate brown or chestnut-colored at the base, the inner sheaths dark toward the summit. The inflorescence is a many-flowered, loosely clustered panicle, 2- 10 cm long. The capsule is oblong-obovoid, of about the same length as the perianth, obtuse or retuse. The seeds are retucilate.

Required Growing Conditions

For current distribution, please consult the Plant Profile page for this species on the PLANTS Web site. Soft rush occurs in wet places on hillsides or valley flats below 2500 m. It occurs through California to British Columbia, the eastern United States, Mexico, and Eurasia.

Cultivation and Care

Juncus effusus is easily propagated from bare root stock or seedlings, from container stalk, or directly seeded into the soil. Bare root stock or seedlings are preferred revegetation methods where there is moving water. These plants can be invasive. They are useful for stabilization and revegetation of disturbed areas. Juncus effusus requires moderate summer watering (irrigation), generally 1 - 4 times per month depending on the absorption rate and water retention capacity of the soil. Salt rush plants may need to have their roots in moist or wet soils. These native plants are especially good for stabilizing or restoring disturbed or degraded areas for erosion and slope control.

Live Plant Collections: The following information on Juncus balticus is provided by J. Chris Hoag and Mike Zierke (USDA, NRCS, Plant Materials Center, Aberdeen, Idaho). Due to their taxonomic and habitat similarity, it is likely that Juncus effusus establishes in a similar manner. Planting plugs is the surest way to establish a new stand of this species. Plug spacing of 25-30 cm will fill in within one growing season. Fluctuating the water level during the establishment period may speed spread of Juncus. Water levels can be managed to enhance spread and control weeds. Clip leaves and stems to 15 to 25 cm (6 to 10 inches) before planting; this allows the plant to allocate more energy into root production. Transplants should be planted as soon as possible in moist (not flooded or anoxic) soils. Plants should be transported and stored in a cool location prior to planting. The roots should always remain moist or in water until planted. Soil should be kept saturated after planting. Plants can tolerate 2.5 - 8 cm of standing water as long as the level fluctuates over the growing season. Allow roots to become established before flooding soils if possible. Ideally, plants should be planted in late fall just after the first rains (usually late October to November). Survival is highest when plants are dormant and soils are moist. Fertilization is very helpful for plant growth and reproduction. Many more seeds are produced with moderate fertilization.

Seed Collections: The flowering period is late May to August, occasionally to September. Seed ripens in early August. Phenology will change by area, aspect, elevation, and specific site conditions. Seed may be collected by hand, using a pair of hand shears, or with a gas-powered handheld seed harvester. The tiny, black seeds are easily lost from the capsules when collecting by hand. Be careful to keep capsules upright before putting in collection bag. Use paper sacks when collecting seeds for this species. To clean the seed, run the collection through a hammermill to break up debris and knock the seeds loose. Use a 1/20 inch screen on the top and a solid sheet on the bottom of the seed cleaner. Adjust the air flow to blow off the chaff. The cleaning process can be speeded up by shaking the hammermilled collection to settle seed to the bottom of the pan. The top portion of the chaff can then be discarded and the seed-rich mixture that is left in the bottom can be run through the seed cleaner.

Seed germination in greenhouse: Seeds need light, moisture and heat for germination. Soaking the seeds in water for 1 - 7 days will decrease the time the seed takes to sprout. To grow seeds, place on soil surface and press in lightly to assure good soil contact. Do not cover the seed. Soil should be kept moist. Greenhouse should be kept hot (32-38°C). Seeds begin to germinate in approximately 1 week. Maintain soil moisture until plants are to be transplanted. Seedlings cannot withstand long periods without water while growing in the greenhouse. Plants are ready in 100 - 120 days to come out as plugs. By planting seeds in August, plugs are ready to plant in soil by November. These plants are very small; growing plants to a larger size will result in increased revegetation succes

General Upkeep and Control

Hydrology is the most important factor in determining wetland type revegetation success, and wetland function and value. Changes in water levels influence species composition, structure, and distribution of plant communities. Water management is absolutely critical during plant establishment, and remains crucial through the life of the wetland for proper community management (Hoag et al. 1995). Juncus species can tolerate periods of drought and total inundation. It is important to keep transplanted plugs moist, not flooded, until roots are established. Water levels can then be managed to enhance or reduce spread as well as control terrestrial weeds.

Muskrats have evolved with wetland ecosystems and form a valuable component of healthy functioning wetland communities. Muskrats use emergent wetland vegetation such as Juncus species for hut construction and for food. Typically, an area of open water is created around the huts. Muskrat eatouts increase wetland diversity by providing opportunities for aquatic vegetation to become established in the open water and the huts provide a substrate for shrubs and other plant species.

Juncus species tend to be fairly resilient to insect and disease problems. Aphids may feed on the stems, but rarely cause significant damage. If an insect or disease problem is encountered in the greenhouse, treatment options may be limited by cultural constraints if these plants are to be used by Indian basketweavers. Pesticide exposure is higher for basketweavers than the rest of the population. Juncus culms are split with the mouth to process basketry materials; therefore, an unusually high degree of human exposure and risk occur with plants designated for ethnobotanic use. Rushes are perennial, rhizomatous plants. In most cases, they will out-compete other species within the wetland area of the site, eliminating the need for manual or chemical control of invasive species.

Traditional Resource Management: The management of Juncus effusus stands includes the following: ownership of prime basket rush sites, stimulation of new growth through harvesting stalks, periodic burning, and not harvesting when soils are very mucky and likely to be compacted. The stalks are cut above the rhizomes and roots, leaving plenty of buds to regrow new shoots. As with other rhizomatous species, harvesting stimulates new growth and maintains the clone in a juvenile or immature growth phase, where productivity is highest.

Plant Basics
Category
Growth Rate Moderate
General Type Graminoid
Growth Period Spring
Growth Duration Perennial
Lifespan Long
Plant Nativity Native to U.S.
Commercial Availability Routinely Available
Physical Characteristics
Bloom Period Summer
Displays Fall Colors No
Shape/Growth Form Bunch
Drought Tolerance Medium
Shade Tolerance Intolerant
Height When Mature 6.6
Vegetative Spread None
Flower Color Brown
Flower Conspicuousness No
Fruit/Seed Abundance Medium
Fruit/Seed Seasonality Summer Fall
Seed Spread Rate Slow
Gardening Characteristics
Propagations (Ways to Grow) Seed, Sprigs
Moisture Requirements Medium
Cold Stratification Required No
Minimum Temperature -38
Soil Depth for Roots 24
Toxic to Nearby Plants No
Toxic to Livestock No
After-Harvest Regrowth Rate Slow
After-Harvest Resprout Ability No
Responds to Coppicing No
Growth Requirements
pH Range 5.5–7 pH
Precipitation Range 18–18 inches/yr
Planting Density 2800–4800 indiv./acre
Soil Textures Coarse, Fine, Medium
Soil Depth for Roots 24
Minimum Frost-Free Days 120 day(s)
Salinity Tolerance Low
CaCO3 Tolerance Low
Sustainability & Use
Leaf Retention No
Palatability High
Fire Resistant Yes
Causes Livestock Bloating None

Source: USDA, NRCS, PLANTS Database, plants.usda.gov.
National Plant Data Center, Baton Rouge, LA 70874-4490 USA