Search Results

You are looking at 91 - 100 of 2,459 items for :

  • Refine by Access: All x
Clear All
Full access

Alan Zuk, Qi Zhang, Ted Helms, and Harlene Hatterman-Valenti

Many native and ornamental grasses can provide year-long beauty and interest including autumn and winter ( Plowes, 2012 ) to residential, business, municipal, and natural landscapes. They can be used as specimen plants; accent plants; or for

Full access

Jeffrey G. Norcini and James H. Aldrich

Over the past 10 to 20 years, production of prevariety germplasm of native wildflower seeds has risen dramatically in response to the demand for site- or regionally specific ecotype seeds for roadside plantings as well as for ecological restoration

Free access

John Bamberg and Alfonso del Rio

Potatoes are native to the Americas, concentrated in the western mountains extending from southern Chile to southern Utah and Colorado in the United States. The authors here describe their efforts to collect and study populations of the two wild

Free access

Abby B. Griffin, Amy N. Wright, Kenneth M. Tilt, and D. Joseph Eakes

soil or root ball on establishment and growth of two native shrub taxa. MATERIALS AND METHODS Plant taxa used in this experiment included Rhododendron austrinum Rehd. (Florida flame azalea) and Itea virginica L. ‘Henry's Garnet’ (‘Henry's Garnet

Free access

Lamprini Tassoula, Maria Papafotiou, Georgios Liakopoulos, and Georgios Kargas

character in urban areas, several researchers have turned their interest in native Mediterranean perennials, mostly xerophytes, capable of growing on extensive green roofs ( Benvenuti and Bacci, 2010 ; Kotsiris et al., 2012 ; Nektarios et al., 2011

Free access

Maria Papafotiou, Niki Pergialioti, Lamprini Tassoula, Ioannis Massas, and Georgios Kargas

should be taken under consideration before applying green roof systems in Mediterranean regions are water availability, particularly in those areas with semiarid climate, biodiversity, and local character preservation. The use of native xerophytes in

Free access

John M. Englert and Gwen C. Meyer

In recent years the use of native plant materials for conservation and revegetation projects has received increased awareness and interest. The National Plant Materials Center (NPMC), in cooperation with the USDI-National Park Service, is involved in the revegetation of disturbed areas within our National Parks using native herbaceous and woody plants. This involves the collection of germplasm from selected niches within the Parks, an increase in seed and production of transplants, and reestablishment of native communities in natural areas.

One major focus of the program is to develop technology for improving native plant propagation and production, which should make the use of native plants more viable in the commercial sector. Germination of species of Tridens, Dichanthelium, Danthonia, Helianthus, Schizachyrium, and Andropogon has been improved to 80-95% by altering the germination environment. Production of these species in plugs has also been streamlined to maximize space efficiency and provide cost-effective methods for planting native grasses and wildflowers.

Free access

Robert F. Gorman and Julie Roller

Ten plant species native to southeast Alaska and surrounding regions were selected based on their value as ornamentals, food crops, disturbed site revegetation, and traditional Native American uses. Between 2003–05, seeds, cuttings, rhizomes, and bulbs from the 10 native plant species were collected in Sitka, Alaska, and propagated according to existing plant propagation protocol for each species. The most successful propagation method for each species was determined from field trials. This information was provided through workshops and Extension publications to gardeners in southeast Alaska and other parts of Alaska. The purpose of this project was to enhance growing local native plants as ornamentals, food crops, in disturbed site revegetation and for traditional Native American uses, particularly among native elders unable to collect these plants in the wild. A secondary purpose was to create a market for native plants in southeast Alaska and spawn a cadre of local cottage market gardeners to grow native plants for existing small nurseries. The 10 species selected included: Cornus canadensis, C. stolonifera, Empetrum nigrum, Fritillaria camschatcensis, Linnaea borealis, Oplopanax horridus, Rubus chamaemorus, Vaccinium parvifolium, Vaccinium ovalifolium, and Viburnum edule.

Free access

Sandra A. Balch, Cynthia B. McKenney, and Dick L. Auld

Oenothera biennis, common evening primrose, is grown commercially for its seed, which contains high levels of gamma-linolenic acid (GLA), a fatty acid with pharmaceutical and dietary importance. Other native species of Oenothera are being evaluated for the presence of GLA in their seed and their potential as a commercial source of GLA. Native evening primrose species have shown slow emergence and low germination percentages. Studies were conducted to determine the effects of chilling, scarification, and priming on germination of seed for six species of native evening primrose. Overall, seed germination was improved by seed treatments. However, responses to the various treatments differed among species.

Free access

Janet Waterstrat, Jacquelyn Deeds, and Richard L. Harkess

Recent trade journals and magazines report a widespread and increasingly popular trend encouraging the use of native plants in the landscape. A random sample of 528 Southern Nurserymen's Association 1996 members were surveyed to determine 1) if they had perceived the trend reported in trade and consumer publications towards the selection of native plants, and 2) if there are consistencies in demographic characteristics and aspects of advertising plans among the respondents. Forty-two percent of those surveyed responded. Respondents perceived an overall interest in native plants higher in 1996 than in 1991. Almost half of the respondents had increased quantity and variety of native plants in response to their perceptions; 28% had not responded in any way. Plant professionals who had responded to the perceived trend did not differ significantly from those who had not on selected demographic characteristics. Selected aspects of advertising did not differ significantly except for the extent to which consumer magazines were used as references for marketing strategies.