牡丹花treepeonyTreepeony(Paeoniasuffruticosa)andherbaceouspeony(Paeonialactiflora),isaverybeautifulplantoriginatinginChina.Thechoiceoftreepeonyin1994astheChinesenationalflowerwasyetanotherhonortobeaddedtotheaccoladesandhonorifictitlesbestowedonitoverthecenturies.Forexample,Treepeonyothername"Richesandhonorflowers","Kilogramsgold",totreepeoniesindicatethatthefloweristhesymbolofhappinessandgoodluck.ThetreepeonysymbolizesthecharacteristictemperamentandculturalfeaturesoftheChinesenation,theprosperityofthecountry,andthediligenceofthepeople.TreepeonywasnotuntiltheperiodbetweentheQinandHanDynasties(221BC-220AD)thatMudan-treepeonywasdifferentiatedfrom220to589AD,andhascontinuedformorethan1500years.Duringthistime,agradualprocessofpropagationandselectionhasledtothewiderangeoftreepeonycultivatesavailablenow.NowadaysTreepeony'scultivateshavetremendouslyvariedcharacteristicsresultingfromtherangeoforiginalspeciesinvolvedandfromtherangeoforiginalspeciesinvolvedandfromthedifferentecologicalenvironments.Ourresearchworkhasdeterminedtreepeony'sfourCultivateGroups:theCentralPlainstreepeonygroup,theNorthwesttreepeonygroup,theSoutherntreepeonygroupandtheSouthwesttreepeonygroup.Ofthese,theCentralPlainsCultivatetreepeonygroup(LuoyangtreepeonyistheCentralPlainstreepeonygroup)istherichestinnumberofcultivateswithvariedflowerforms,colorsandlengthofcultivationhistory.Now,wealreadyhad"Luoyangpeonyoriginalhabitatprotectionmarking",hasformulated"theLuoyangpeonyseedlingstandard".Luoyangpeony'ssownarea1,200hectares,teepeonyvarietynearlythousand.Hasformedtwobigpeoniesindustriesbeltinthe
