UC Landscape Plant Irrigation Trials™

South Coast REC Plant Index

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These are all the plants evaluated at South Coast REC (SCREC) since 2018.

  • Plants are listed alphabetically by scientific name
  • Plants were evaluated in-ground in full sun or under 50% shade cloth.
  • All plants were evaluated in Irvine, CA (WUCOLS Region 3) at the UC South Coast Research and Extension Center.
  • All plants were irrigated with reclaimed water. These rates may be lower for potable water.
  • The best average Overall Appearance rating a plant received during the treatment season is listed as Mean O/A Score (based on a 1-5 scale, where 5 is highest).
  • NA = not appropriate; NR = not rated; BR = trialed before O/A rating began; NC = not collected due to high plant mortality.
  • Each plant is classified according to WUCOLS IV Categories of Water Needs- H: High; M: Moderate/Medium; L: Low; NA: Not Appropriate for this region and/or reclaimed water. (See the Nuts and Bolts tab for details on how the recommendation was determined.)
  • * Plants receiving an overall appearance rating of 3 or less are not recommended in this area under these irrigation conditions.
  • ** Plants that performed poorly in full sun, but if used, some shade is suggested.
  • printer friendly pdf version: South Coast REC Plant Index
Scientific NameCommon NameExposureMean O/A ScoreWUCOLS CategoryTrial Year
Acacia cognata 'ACCOG01'Cousin Itt Little River wattleSun3.1M2019
Buddleia× 'SMNBDBT'Pugster Blue™ butterfly bushSun3.6L2020
Cotinus coggygriga 'NCCO1'Winecraft Black® smokebushSun3.1L2020
Dianella revoluta 'Allyn-Citation'Coolvista™ dianellaSun3.1L2019
Elaeagnus x ebbingii 'Viveleg'
Olive Martini™ elaeagnusSun3.7L2019
Eremophila glabra 'EREM1'Grey Horizon™ emu bushSun3.5L2020
Grevillea 'Kings Celebration'Kings Celebration grevilleaSun2.9L2019
Grevillea 'King's Fire'King's Fire grevilleaSunNCNA2019
Hamelia patens Sierra Red™Sierra Red™ firecracker bushSun3.1L2020
Hesperaloe parviflora 'MSWNPERED'Sandia Glow® red yuccaSun3.3L2020
Hydrangea quercifolia 'BIV01'Tara™ oakleaf hydrangea50% Shade2.9L2020
Hypericum kalmianum 'Deppe'Sunny Boulevard® St. John's wortSun1.8NA2020
Ilex crenata 'Farrowone'Sky Box® holly50% Shade2NA2020
Lagerstroemia indica 'Conlagras'Bellini® Raspberry crape myrtleSun3.2M2019
Laurus nobilis 'MonRik'Little Ragu® sweet baySun3.2L2020
Lavandula allardii 'Meerlo''Meerlo' lavenderSun3.6L2019
Lippia nodiflora 'Campagna Verde'KurapiaSun3.6L2018
Lippia nodiflora 'New White'New White kurapiaSun3.8L2018
Lomandra longifolia 'Katrinus Deluxe''Katrinus Deluxe' mat rush50% Shade2.5L2020
Muhlenbergia capillaris 'Irvine'Plumetastic® pink muhly grassSun3.3L2019
×Pyracomeles 'NCXP1'Juke Box® pyracomelesSun3.3L2020
Rhagodia spinescens 'SAB01'Aussie Flat Bush™ saltbushSun3.7L2020
Rhaphiolepis indica 'Parhap'Oriental Pearl Indian hawthornSun3.5L2020
Rhaphiolepis indica 'sPg-3-003'Redbird™ Indian hawthornSun2.9L2020
Rhaphiolepis umbellata 'RutRhaph1'Southern Moon® yedda hawthornSun3.2M2019
Rhododenron 'Robleza'Autumn Bonfire™ azalea50% Shade2.2NA2020
Rosa 'Baillim'Chi™ roseSun3.3L2020
Rosa 'KORfizzlem'Lemon Fizz Kolorscape® roseSun3.1M2020
Rosa 'Meiggili'Peach Drift® roseSun3NA2020
Rosa 'Meijecycka'Limoncello™ roseSun3.2L2019
Rosa 'Meijocos'Pink Drift® roseSun3.2H2019
Rosa 'Meimirrote'Apricot Drift® roseSun3.5L2020
Rosa 'Meiradena'Icecap™ roseSun3.5L2019
Rosa 'Meitraligh'Brick House™ roseSun3L2019
Rosa 'NOA168098F'Pink Supreme Flower Carpet® roseSun3.6M2020
Rosa 'Radral'Coral Knock Out® roseSun2.2NA2020
Rosa 'Radwhite'White Knock Out®Sun3.1L2019
Ruschia lineolata 'Nana'Dwarf carpet of starsSun3.2L2020
Tecomaria capensis Riot Red®Riot Red® Cape honeysuckleSun3.8L2020
Vitex agnus-castus 'Bailtextwo'Galactic Pink® chastetreeSun3.5M2020
Vitex × hybridus 'Bailtexone'Flip Side® chastetreeSun3.4L2019