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	Perennial Flower Gardening Tips
		Perennial flower pictures - There are an increasing number of pictures going up here and I invite you to upload your own garden shots.
		A part of perennial gardening that is slowly interesting me is the use of perennial grasses in flower garden design.
		Perennial ground covers serve many useful functions in the garden and this is a listing and description area for those plants.
	www.gardening-tips-perennials.com (538 words)

	Perennial plant - Wikipedia, the free encyclopedia
		A perennial plant or perennial (Latin per, "through", annus, "year") is a plant that lives for more than two years.
		Herbaceous perennials are plants that do not form woody tissue and the term perennial more commonly describes these plants, since woody plants (i.e., trees and shrubs) are always perennials.
		In some species, perennials retain their foliage all year round; these are evergreen perennials.
	en.wikipedia.org /wiki/Perennial (335 words)

	Perennial Gardening
		Perennial Gardens may serve as borders along a fence or property line, thus easing mowing, trimming and water requirements that a lawn may present in such areas.
		Perennial Gardens should be functional, simple to maintain, accessible, and supply a progression of flower colors and textures all season.
		Overcrowded perennials often bloom poorly or not at all.
	www.ext.colostate.edu /pubs/garden/07402.html (1585 words)

	Perennial Sowthistle (Site not responding. Last check: )
		Perennial sowthistle is an aggressive, hard-to-control weed that can reduce crop yields, increase management costs, and depreciate land values.
		Perennial sowthistle reproduces by seed and underground roots.
		Perennial sowthistle is also larger than annual sowthistle, growing up to 6 feet tall.
	www.countyofsb.org /agcomm/wma/PSow.htm (488 words)

	What is an annual plant? What is a perennial plant
		Perennials, like old friends return year after year, growing in size and stature until they reach their full maturity.
		Most perennial plants may be divided to produce new plants, or they may be grown from seeds or cuttings.
		Perennials are available as 4 inch starters, or in gallon size or larger pots.
	www.thegardenhelper.com /planting.html (440 words)

	Perennial Pepperweed (Lepidium latifolium) MT 9906 AG (Site not responding. Last check: )
		Perennial pepperweed, often used by florists in fresh and dried flower arrangements, is not just another pretty white flower growing along the roadside.
		Perennial pepperweed is a native of southern Europe and western Asia.
		Perennial pepperweed is a very competitive species that crowds out desirable vegetation and results in dense monocultures and a decrease in biodiversity.
	www.montana.edu /wwwpb/pubs/mt9906.html (1648 words)

	Grounds Maintenance: Perennial ryegrass on golf courses: Friend or foe? (Site not responding. Last check: )
		Not to be confused with perennial ryegrass, annual ryegrass has lost some of its importance in recent years because it produces a coarser, more open turf than many newer turf-type perennial ryegrasses, and it is extremely susceptible to Pythium diseases.
		Perennial ryegrass is a short-lived perennial originating from open areas and forest fringes of southern Europe and western Asia, extending as far south as northern Africa.
		Perennial ryegrass' texture, unlike that of bentgrass and tall fescue, is nicely compatible with that of Kentucky bluegrass.
	www.findarticles.com /p/articles/mi_m0HEJ/is_2000_Jan/ai_59327865 (1293 words)

	Perennial Sweet Pea, Non-native Plants of Sequoia and Kings Canyon National Parks
		Perennial sweet pea (Lathyrus latifolius) is common in moist disturbed areas throughout California.
		Perennial sweet pea is very distinctive on account of the prominent wings or flanges present on the stems.
		Perennial sweet pea is restricted to moist or disturbed areas in Sequoia National Park.
	www.nps.gov /seki/snrm/nnp/html/badlala.htm (368 words)

	Conformance Testing & Branding
		Perennial's Conformance Test Laboratory is accredited by The Open Group (formerly X/Open) to provide XPG Component Branding for C Compilers.
		Perennial provides a Certificate of Validation for C compilers meeting the validation requirements for the latest version of the ISO C Standard.
		Perennial is accredited by the National Institute for Standards and Technology (NIST), and the Institute of Electrical and Electronics Engineers (IEEE), as an Accredited POSIX Test Laboratory.
	www.peren.com /pages/branding.htm (227 words)

	Perennial Bed Renovation
		Perennial weeds such as quackgrass may be more numerous than the desired perennials, the soil may need improvement, or the gardener may have a new design in mind.
		For large perennials it is easier to cut the plants into manageable pieces when they are still in the ground.
		Many perennials will not require division; however, this is an excellent opportunity to do so if necessary or if you are looking for more plants of that particular variety.
	www.ipm.iastate.edu /ipm/hortnews/1994/5-18-1994/bedren.html (765 words)

	Perennial Pepperweed Management Guidelines--UC IPM (Site not responding. Last check: )
		Perennial pepperweed is a long-lived herbaceous perennial that thrives in seasonally wet areas or areas with a high water table.
		Perennial pepperweed's root system is the foundation of the plant's competitiveness and the major target of control efforts.
		Perennial pepperweed root fragments or seeds have been found in straw, hay bales, mulch, and crop seed, so ensure that these items are free of weed seed and propagules before applying them to an area.
	www.ipm.ucdavis.edu /PMG/PESTNOTES/pn74121.html (1680 words)

	Gardening: Reference: About Designing Perennial Gardens
		Planning a perennial border is essentially different from planning any other type of garden because the element of time is so vital.
		Perennial gardens are not as floriferous as rose gardens or annual beds.
		Perennial gardeners might say that annual flower displays are vulgar and over-done, and that perennial gardens have just the right amount of blossom.
	www.gardenadvice.com /index.cfm/event/Article.Detail/documentId/ead62259dc7c5b3d9da79b7fd761ae36 (317 words)

	Intermediate Wheatgrass as a Perennial Grain Crop
		Close to 100 species of perennial grasses were evaluated at the RRC in order to identify those with good potential for development into perennial grain crops.
		Perennial grains could, in the future, provide farmers with an economic return from land that may otherwise remain idle.
		Perennial grain cropping systems could provide many environmental benefits through the reduction of soil erosion as well as the reduction of inputs necessary to produce grain crops.
	www.hort.purdue.edu /newcrop/proceedings1990/v1-143.html (1661 words)

	King County Noxious Weed Control Program - Perennial Pepperweed Identification
		Perennial pepperweed is found along the Duwamish River on industrial lands.
		A native of southern Europe and western Asia, perennial pepperweed establishes rapidly and colonizes pastures, riparian habitats, and wet areas, as well as along roadsides, in rangelands and field crop situations.
		Perennial pepperweed's delicate, milky white flowers, which are sometimes collected for dry flower arrangement, grow in dense, rounded clusters at branch tips.
	splash.metrokc.gov /wlr/LANDS/Weeds/peppweed.htm (363 words)

	perennial. The Columbia Encyclopedia, Sixth Edition. 2001-05
		Botanically, the term perennial applies to both woody and herbaceous plants (see stem) and thus includes numerous members of the kingdom.
		Perennials form seeds each year after reaching maturity, but since plants grown from seeds do not normally bloom until the second season (unless forced), most garden perennials are propagated by dividing the rootstocks (see propagation of plants).
		Perennials, including the woody perennials, may have a rest period of some duration during their life cycle.
	www.bartleby.com /65/pe/perennia.html (274 words)

	Perennial Plant Association
		The Perennial Plant Association has awarded the title of Perennial Plant of the Year to Nepeta ‘Walker’s Low’.
		Great for perennial borders, but can be used in herb gardens, rock gardens, as a ground cover, or as a container plant.
		From time to time we receive the question, "How is the Perennial Plant of the Year selected?" The selection process is quite simple – PPA members vote for the POY.
	www.perennialplant.org (230 words)

	Area of Adaptation -- Perennial ryegrass (Lolium perenne L.) PNW 503 Extension Publication - Oregon State ... (Site not responding. Last check: )
		Perennial ryegrass is best adapted to cool, moist climates where winter kill is not a problem.
		Perennial ryegrass is adapted to shade in the warmer portions of a cool, humid climate.
		Perennial ryegrass is less winter-hardy than orchardgrass and tall fescue and less drought-tolerant than smooth bromegrass.
	eesc.orst.edu /agcomwebfile/edmat/html/pnw/pnw503/adaptation.html (384 words)

	Perennial Pepperweed
		Perennial Pepperweed (Lepidium latifolium) is a member of the mustard family (Brassicaceae).
		Perennial Pepperweed is in the same family as mustard and canola and there is concern that a biocontrol insect would attack an agricultural crop.
		The roots of Perennial Pepperweed can grow to a depth of over two meters, therefore chemicals must be applied for more than one year for results to be seen.
	www.sfn.saskatoon.sk.ca /science/splep/perennial_pepperweed.html (792 words)

	EO News: The Arctic Perennial Sea Ice Could Be Gone by End of the Century - November 27, 2002
		A NASA study finds that perennial sea ice in the Arctic is melting faster than previously thought—at a rate of 9 percent per decade.
		While the latest data came too late to be included in the paper, Comiso recently analyzed the ice cover data up to the present and discovered that this year’s perennial ice cover is the least extensive observed during the satellite era.
		Caption: This image represents the decadal average of the concentration of the perennial ice cover during the 2050s as projected from the current data set.
	eob.gsfc.nasa.gov /Newsroom/NasaNews/2002/2002112710960.html (1028 words)

	Perennial Plants (Site not responding. Last check: )
		Unlike annuals which need to replenished every year, perennial plants only need to be planted once where to will continue to beautify your landscape and give you years of enjoyment.
		We will ship them as soon as weather permits in spring and they will need to be unpacked and cared for as soon as possible upon arrival.
		Perennials are generally shipped in the spring, between May 5th and June 15
	www.superseeds.com /perennial_plants.htm (1701 words)

	Perennial Stream Mapping Project (Site not responding. Last check: )
		In Fairfax County, a perennial stream is defined as a body of water flowing in a natural or man-made channel year-round, except during periods of drought.
		Lakes and ponds that form the source of a perennial stream, or through which the perennial stream flows, are a part of the perennial stream.
		The Perennial Stream Mapping Project was initiated in September 2001 to address concerns that all perennial streams were not being protected under the county's Chesapeake Bay Preservation Ordinance (CBPO), Chapter 118 of the Fairfax County Code.
	www.co.fairfax.va.us /dpwes/watersheds/perennial.htm (774 words)

	Perennial Gardening: Selecting, Planting & Growing
		Perennials are planted according to their bloom time.
		Late summer or fall blooming perennials are planted in the spring, and all spring flowering perennials are planted in the fall.
		Pruning perennials is done for three reasons; to encourage new growth, to shape the plant/shrub to make it more pleasing to the eye and to keep the plant healthy.
	www.gardentimeonline.com /Perennials.html (574 words)

	Where to use Perennials in the Perennial border
		Perennial borders around the edges of the home plot or old-style back yard have done much to get people away from the old type of gardening that consisted of a lawn cluttered up with small flower beds.
		The width of the perennial border will be determined ordinarily by the amount of space available and by the distance from which it is to be viewed.
		Some designers feel that the front edge of the perennial border should be a continuous planting of one kind of plant; others that it may be made up of different types of low-growing plants.
	www.plantideas.com /pren (1527 words)

	Perennial Gardening (Site not responding. Last check: )
		Since we are keen perennial lovers we own a collection of more that 700 different cultivars of hardy plants in our garden and that is without the trees or shrubs.
		How To Divide Perennials When an established perennial produces fewer flowers, or the center of the plant looks sickly while the margins thrive, it could be time to divide the plant.
		Perennial Garden, Gardening, Perennials Guide to Planting Flowers The new gardener is coming to rely on perennial flowering plants to a greater extent every year.
	www.mnsi.net /~jhlavac/gardening/perennials.htm (1407 words)

	AT&T News Release, 1992-09-22, C++ Verification Suite from UNIX System Labs and Perennial (Site not responding. Last check: )
		The joint development effort between Perennial and USL has merged the huge number of test cases already developed by Perennial with the test suite developed by USL.
		Perennial, Inc., a leader in language validation, is the developer of the official U.S. government accredited test suite for FIPS-160 ANSI/ISO C, and is a U.S. government accredited test laboratory for POSIX conformance.
		Established in 1986, Perennial is an active member of standards committees for ANSI/ISO C++ (X3J16), ANSI/ISO C (X3J11), and POSIX (IEEE P1003).
	www.att.com /news/0992/920922.ula.html (438 words)

	NASA - The Arctic Perennial Sea Ice Could Be Gone by End of the Century
		NASA study finds that perennial sea ice in the Arctic is melting faster than previously thought -- at a rate of 9 percent per decade.
		Perennial sea ice floats in the polar oceans and remains at the end of the summer, when the ice cover is at its minimum and seasonal sea ice has melted.
		The results were compiled to obtain overall annual values of perennial sea ice.
	www.nasa.gov /vision/earth/environment/Perrenial_Sea_Ice.html (768 words)

	Identifying and Mapping Perennial Streams (Site not responding. Last check: )
		One of the major goals of the perennial stream project is to consistently field-identify and map all perennial streams using a scientifically valid protocol and include them in RPAs.
		The perennial stream identification and mapping project was initiated in March 2002.
		Although Fairfax County is focusing on identifying perennial streams, it is important to remember that the headwaters of stream systems begin as small, short-lived ephemeral streams, whose sources of flow originate from storm events.
	www.co.fairfax.va.us /nvswcd/newsletter/perennial1.htm (1001 words)

	buy perennial plant (Site not responding. Last check: )
		This is the best place to buy perennial plant as well as a garden tool or a lawn and garden tool.
		But as the gradually lengthened spike keeps up an uninterrupted succession of bloom for months, more than ample provision is made for the perpetuation of the race - a necessity to any plant that refuses to thrive unless it stands in water.
		Of the three kinds of blossoms of the Pickerel, one raises its stigma on a long style reaching to the top of the flower; a second form lifts its stigma only halfway up, and the third keeps its stigma in the bottom of the tube.
	catalog.alt-health.biz /buy-perennial-plant.html (341 words)

	Designing a Perennial Garden
		The thousands of different perennials vary widely in their growth and blooming habits, and each has different needs that must be met in order to thrive.
		Ideally, a perennial garden grows for many years in the same location, so make a note not only of present light conditions, but also of future possibilities.
		However, even with generous spacing, most perennials will need to be divided from time to time and the clumps reduced to a manageable size.
	www.gardenguides.com /articles/perennialgarden.htm (482 words)

	Perennial, Inc.
		Perennial develops and licenses compiler validation test suites for C, C++, Embedded C++, and Java™ languages.
		In 1989, Perennial was awarded an exclusive contract with the National Institute of Standards and Technology (NIST) to provide the US Government's only certification test suite for the C language, ACVS.
		Perennial is also accredited by NIST as an Accredited POSIX Test Laboratory, and by X/Open as a Conformance Test Centre.
	www.peren.com (207 words)

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