Trees Box Elder
Acer negundo
30–60′ × 30–50′ Sun or shade Moderate 81 118 Coast Live Oak
Quercus agrifolia
20–70′ × 30–70′ Full sun Very low 79 303 Valley Oak
Quercus lobata
40–100′ × 60–100′ Full sun Low 73 303 Engelmann Oak
Quercus engelmannii
20–50′ × 30–50′ Full sun Very low 68 303 California Juniper
Juniperus californica
10–25′ × 10–15′ Full sun Very low 61 57 Southern California Black Walnut
Juglans californica
15–30′ × 20–30′ Full sun Low 58 39 Black Cottonwood
Populus trichocarpa
30–100′ × 25–35′ Full sun Moderate 57 238 California Sycamore
Platanus racemosa
40–100′ × 30–50′ Full sun Moderate 49 17 Shrubs Seacliff Buckwheat
Eriogonum parvifolium
1–3′ × 3–5′ Full sun Very low 91 69 Deerweed
Acmispon glaber
2–3′ × 3′ Full sun Very low 88 29 California Wild Rose
Rosa californica
3–8′ × 6–10′ Sun or shade Low 88 107 Bigberry Manzanita
Arctostaphylos glauca
6–20′ × 8–20′ Full sun Very low 86 87 Golden Currant
Ribes aureum
3–10′ × 3–6′ Sun or shade Low 84 125 Oceanspray
Holodiscus discolor
6–15′ × 6–12′ Part shade Low 84 64 Coyote Brush
Baccharis pilularis
1–10′ × 6–12′ Full sun Very low 83 36 California Buckwheat
Eriogonum fasciculatum
1–3′ × 3–6′ Full sun Very low 82 69 Bigpod Ceanothus
Ceanothus megacarpus
6–13′ × 8–13′ Full sun Very low 82 141 Fuchsia-flowered Gooseberry
Ribes speciosum
3–8′ × 5–8′ Part shade Low 80 125 Desert Broom
Baccharis sarothroides
3–10′ × 6–10′ Full sun Very low 80 36 White Sage
Salvia apiana
3–8′ × 4–8′ Full sun Very low 77 17 Hollyleaf Cherry
Prunus ilicifolia
8–30′ × 10–25′ Full sun Low 76 249 Creeping Snowberry
Symphoricarpos mollis
1–3′ × 3–6′ Part shade Low 76 52 Black Sage
Salvia mellifera
3–6′ × 5–10′ Full sun Very low 76 17 California Coffeeberry
Frangula californica
3–15′ × 4–15′ Sun or shade Low 76 40 California Blackberry
Rubus ursinus
2–5′ × 6–15′ Sun or shade Moderate 75 97 Ashyleaf Buckwheat
Eriogonum cinereum
3–5′ × 4–6′ Full sun Very low 74 69 Hoaryleaf Ceanothus
Ceanothus crassifolius
5–12′ × 6–10′ Full sun Very low 74 141 Lemonade Berry
Rhus integrifolia
3–25′ × 8–25′ Full sun Very low 74 31 Sugar Bush
Rhus ovata
8–12′ × 8–15′ Full sun Very low 71 31 California Bush Sunflower
Encelia californica
2–5′ × 4–5′ Full sun Very low 70 6 Greenbark Ceanothus
Ceanothus spinosus
6–20′ × 8–20′ Full sun Very low 70 141 Threadleaf Ragwort
Senecio flaccidus
1–4′ × 2–4′ Full sun Very low 69 48 Toyon
Heteromeles arbutifolia
6–25′ × 8–15′ Sun or shade Low 69 15 Southern Honeysuckle
Lonicera subspicata
3–10′ × 4–8′ Part shade Low 68 34 Purple Sage
Salvia leucophylla
3–6′ × 5–10′ Full sun Very low 67 17 Coastal Goldenbush
Isocoma menziesii
1.5–5′ × 2–4′ Full sun Very low 64 23 Blue Elderberry
Sambucus mexicana
10–25′ × 10–20′ Full sun Low 62 39 Silver Dune Lupine
Lupinus chamissonis
2–5′ × 3–5′ Full sun Low 61 84 Brown Dogwood
Cornus glabrata
6–20′ × 8–15′ Part shade Moderate 56 65 California Sagebrush
Artemisia californica
2–5′ × 3–6′ Full sun Very low 54 70 Laurel Sumac
Malosma laurina
6–20′ × 10–20′ Full sun Very low 54 9 Quailbush
Atriplex lentiformis
3–10′ × 6–12′ Full sun Low 52 24 Golden Yarrow
Eriophyllum confertiflorum
1–3′ × 1–3′ Full sun Very low 52 15 Narrowleaf Goldenbush
Ericameria linearifolia
1.5–5′ × 3–5′ Full sun Very low 51 34 Foothill Penstemon
Penstemon heterophyllus
1–3′ × 1.5–3′ Full sun Very low 51 28 California False Indigo
Amorpha californica
3–8′ × 4–8′ Part shade Low 51 14 Thickleaf Yerba Santa
Eriodictyon crassifolium
3–9′ × 3–6′ Full sun Very low 49 7 Chamise
Adenostoma fasciculatum
3–12′ × 6–12′ Full sun Very low 49 20 Coastal Prickly Pear
Opuntia littoralis
1.5–5′ × 5–10′ Full sun Very low 48 12 Birchleaf Mountain Mahogany
Cercocarpus betuloides
6–20′ × 8–15′ Full sun Very low 48 39 California Ash
Fraxinus dipetala
7–20′ × 10–20′ Part shade Low 46 63 Sweetbush
Bebbia juncea
2–5′ × 3–5′ Full sun Very low 46 2 Giant Coreopsis
Leptosyne gigantea
3–10′ × 3–6′ Full sun Very low 45 2 Desert Wild Grape
Vitis girdiana
10–30′ × 15–30′ Part shade Moderate 43 56 Chaparral Mallow
Malacothamnus fasciculatus
4–15′ × 6–15′ Full sun Very low 43 8 Blue Witch Nightshade
Solanum umbelliferum
2–4′ × 3–5′ Sun or shade Very low 40 53 Western Redbud
Cercis occidentalis
10–20′ × 10–18′ Full sun Low 36 12 White Everlasting
Pseudognaphalium microcephalum
1–3′ × 1.5–3′ Full sun Low 36 8 Sawtooth Goldenbush
Hazardia squarrosa
2–5′ × 2–5′ Full sun Very low 35 5 Fragrant Pitcher Sage
Lepechinia fragrans
3–6′ × 4–6′ Part shade Low 34 3 Arrowweed
Pluchea sericea
3–10′ × 4–10′ Full sun Low 33 5 Southern Bush Monkeyflower
Diplacus longiflorus
1–3′ × 1–3′ Full sun Very low 33 3 Island Morning Glory
Calystegia macrostegia
3–15′ × 6–15′ Full sun Low 32 4 Prickly Phlox
Linanthus californicus
1–3′ × 1–3′ Full sun Low 32 2 Narrowleaf Bedstraw
Galium angustifolium
1–3′ × 1–3′ Part shade Low 32 12 California Brickellbush
Brickellia californica
2–5′ × 3–6′ Full sun Very low 31 5 Heart-leaved Penstemon
Keckiella cordifolia
3–6′ × 4–8′ Part shade Low 29 4 Western Virgin's Bower
Clematis ligusticifolia
10–30′ × 10–20′ Sun or shade Moderate 27 11 Red Bush Monkeyflower
Diplacus puniceus
1–2′ × 3–5′ Full sun Very low 27 3 Woolly Blue Curls
Trichostema lanatum
3–5′ × 3–5′ Full sun Very low 24 6 Pipestem Clematis
Clematis lasiantha
6–20′ × 6–15′ Part shade Low 23 11 Canyon Sunflower
Venegasia carpesioides
3–6′ × 4–6′ Part shade Low 23 0 Woolly Seablite
Suaeda taxifolia
1–5′ × 3–6′ Full sun Low 22 5 Bush Poppy
Dendromecon rigida
3–10′ × 4–8′ Full sun Very low 19 2 Canyon Silktassel
Garrya veatchii
4–7′ × 6–10′ Full sun Very low 19 0 Perennials & wildflowers Yarrow
Achillea millefolium
1–3′ × 1–3′ Sun or shade Low 86 20 Three-nerve Goldenrod
Solidago velutina
1–3′ × 1.5–3′ Full sun Low 85 56 Slender Sunflower
Helianthus gracilentus
2–5′ × 1–3′ Full sun Low 84 65 California Goldenrod
Solidago velutina ssp. californica
1–4′ × 2–4′ Full sun Low 84 56 California Sunflower
Helianthus californicus
5–10′ × 3–6′ Full sun Moderate 83 65 Common Sunflower
Helianthus annuus
3–10′ × 1–3′ Full sun Low 80 65 Arroyo Lupine
Lupinus succulentus
1–3′ × 1–2.5′ Full sun Moderate 77 84 Sessileflower False Goldenaster
Heterotheca sessiliflora
0.5–3′ × 1–3′ Full sun Low 76 16 Wild Tarragon
Artemisia dracunculus
1–4′ × 1.5–3′ Full sun Low 75 70 Miniature Lupine
Lupinus bicolor
0.3–1.3′ × 0.3–1′ Full sun Moderate 73 84 Showy Penstemon
Penstemon spectabilis
2–4′ × 2–3′ Full sun Very low 73 28 Narrowleaf Milkweed
Asclepias fascicularis
⚠ Milky sap irritates skin and eyes — wear gloves when handling
1.5–3′ × 1–2′ Full sun Low 73 9 Scarlet Bugler
Penstemon centranthifolius
1.5–4′ × 1–2′ Full sun Low 72 28 California Fuchsia
Epilobium canum
1–3′ × 1.5–4′ Full sun Very low 72 30 Hairy Gumplant
Grindelia hirsutula
1–4′ × 2–4′ Full sun Low 71 22 Woollypod Milkweed
Asclepias eriocarpa
⚠ Milky sap irritates skin and eyes — wear gloves when handling
1–3′ × 1.5–3′ Full sun Very low 71 9 Branching Phacelia
Phacelia ramosissima
⚠ Hairs can cause a skin rash in some people — wear gloves
1–4′ × 2–5′ Part shade Low 70 29 Common Sandaster
Corethrogyne filaginifolia
1–3′ × 1.5–3′ Full sun Very low 70 7 Western Goldentop
Euthamia occidentalis
2–6′ × 2–4′ Full sun Low 69 3 Mugwort
Artemisia douglasiana
3–6′ × 2–6′ Sun or shade Moderate 68 70 Johnny Jump-Up
Viola pedunculata
0.3–1.3′ × 0.5–1.5′ Full sun Moderate 68 29 California Bee Plant
Scrophularia californica
3–6′ × 2–4′ Part shade Low 66 13 California Evening Primrose
Oenothera avita
0.3–1′ × 1–3′ Full sun Very low 62 29 California Hedgenettle
Stachys bullata
1–3′ × 2–4′ Part shade Moderate 62 18 Wishbone Bush
Mirabilis laevis
1–3′ × 2–4′ Full sun Very low 61 12 Indian Hemp
Apocynum cannabinum
⚠ Milky sap can blister skin — wear gloves when handling
2–5′ × 2–4′ Part shade Moderate 58 11 Sacred Datura
Datura wrightii
⚠ All parts highly toxic if eaten — keep from children and pets
2–5′ × 4–8′ Full sun Low 57 6 California Poppy
Eschscholzia californica
0.5–2′ × 0.5–1.5′ Full sun Very low 56 3 Purple Owl's Clover
Castilleja exserta
0.3–1.3′ × 0.3–0.8′ Full sun Low 56 26 Tomcat Clover
Trifolium willdenovii
0.5–2′ × 0.3–1.5′ Full sun Low 55 95 Western Vervain
Verbena lasiostachys
1–3′ × 2–4′ Full sun Low 54 10 Lacy Phacelia
Phacelia tanacetifolia
⚠ Hairs can cause a skin rash in some people — wear gloves
1–3′ × 0.5–1.5′ Full sun Very low 53 29 Miner's Lettuce
Claytonia perfoliata
0.2–1′ × 0.3–1′ Part shade Low 52 5 Western Wallflower
Erysimum capitatum
0.5–3′ × 1–2′ Part shade Low 49 4 California Everlasting
Pseudognaphalium californicum
1–3′ × 1–2.5′ Full sun Very low 49 8 Dwarf Plantain
Plantago erecta
0.1–0.5′ × 0.2–0.5′ Full sun Very low 48 47 California Buttercup
Ranunculus californicus
0.5–2′ × 1–2′ Full sun Very low 47 3 Rigid Hedgenettle
Stachys rigida
1–3′ × 1–3′ Part shade Low 47 18 Smoothstem Blazingstar
Mentzelia laevicaulis var. laevicaulis
1.5–4′ × 1–2.5′ Full sun Low 45 3 Tidy Tips
Layia platyglossa
0.3–1.5′ × 0.5–1.5′ Full sun Low 44 1 Common Fiddleneck
Amsinckia menziesii
1–3′ × 0.5–1.5′ Full sun Low 44 7 Elegant Clarkia
Clarkia unguiculata
1–3′ × 0.5–1.5′ Part shade Low 43 8 Tufted Poppy
Eschscholzia caespitosa
0.3–1′ × 0.5–0.75′ Full sun Very low 42 3 Coyote Gourd
Cucurbita foetidissima
0.5–1′ × 10–20′ Full sun Very low 42 15 Scarlet Larkspur
Delphinium cardinale
3–6′ × 1–2′ Full sun Very low 42 11 Chalk Dudleya
Dudleya pulverulenta
1–3′ × 1–2′ Part shade Very low 42 5 Humboldt Lily
Lilium humboldtii
⚠ Even small exposures can kill cats — keep cats away
3–8′ × 1–2′ Part shade Low 42 6 White Tidytips
Layia glandulosa
0.3–1.5′ × 0.5–1′ Full sun Low 40 1 California Goldfields
Lasthenia californica
0.2–1.3′ × 0.3–1′ Full sun Low 40 1 Common Lomatium
Lomatium utriculatum
0.3–1.5′ × 0.5–1.5′ Full sun Low 39 12 Winecup Clarkia
Clarkia purpurea
0.5–3′ × 0.5–1.5′ Full sun Low 39 8 Baby Blue Eyes
Nemophila menziesii
0.3–1′ × 0.5–1′ Part shade Low 37 6 White Pincushion
Chaenactis artemisiifolia
1–5′ × 1–2′ Full sun Very low 36 6 Globe Gilia
Gilia capitata
1–3′ × 0.5–1.5′ Full sun Very low 36 7 Sticky Cinquefoil
Drymocallis glandulosa
1–3′ × 1–2′ Part shade Low 34 1 Indian Pink
Silene laciniata
0.5–2′ × 1–2′ Part shade Low 32 5 Lanceleaf Liveforever
Dudleya lanceolata
0.5–2′ × 0.5–1′ Full sun Very low 31 5 Soap Plant
Chlorogalum pomeridianum
2–8′ × 1.5–3′ Sun or shade Very low 31 2 Matilija Poppy
Romneya coulteri
5–8′ × 6–15′ Full sun Very low 31 1 Red Maids
Calandrinia menziesii
0.2–1′ × 0.5–1′ Full sun Low 30 1 Yellowray Goldfields
Lasthenia glabrata
0.3–1.3′ × 0.25–1′ Full sun Low 30 1 Redskin Onion
Allium haematochiton
0.5–1.5′ × 0.3–0.8′ Full sun Moderate 29 25 Padre's Shooting Star
Primula clevelandii
0.5–1.5′ × 0.5–1′ Part shade Low 28 3 Chinese Houses
Collinsia heterophylla
0.5–2′ × 0.5–1.5′ Part shade Low 27 6 Blue-eyed Grass
Sisyrinchium bellum
0.5–2′ × 0.5–1.5′ Full sun Low 26 0 White Fairy Lantern
Calochortus albus
1–2.5′ × 0.5–1′ Part shade Very low 22 1 California Polypody
Polypodium californicum
0.5–1.5′ × 1–2′ Part shade Very low 17 2 Wind Poppy
Papaver heterophyllum
1–2′ × 0.5–1′ Part shade Very low 16 3 Cream Cups
Platystemon californicus
0.3–1′ × 0.5–1′ Full sun Low 16 1 Bitterroot
Lewisia rediviva
0.1–0.3′ × 0.3–0.5′ Full sun Very low 16 0 Coastal Wood Fern
Dryopteris arguta
1.5–3′ × 2–3′ Part shade Low 15 1 Field Horsetail
Equisetum arvense
0.5–2′ × 2–10′ Part shade Moderate 14 0 Coffee Fern
Pellaea andromedifolia
0.5–2′ × 1–2′ Part shade Very low 12 1 Common Goldenstar
Bloomeria crocea
0.5–2′ × 0.3–0.8′ Full sun Very low 12 0 Giant Chain Fern
Woodwardia fimbriata
3–6′ × 4–8′ Part shade Moderate 12 0 California Maidenhair Fern
Adiantum jordanii
0.5–1.5′ × 1–1.5′ Part shade Low 10 0 Goldback Fern
Pentagramma triangularis
0.3–1′ × 0.5–1.5′ Part shade Low 10 0 Ground covers Lippia
Phyla nodiflora
0.1–0.5′ × 3–6′ Full sun Low 38 5 Grasses Giant Wild Rye
Elymus condensatus
3–9′ × 3–6′ Sun or shade Very low 68 30 California Brome
Bromus sitchensis var. carinatus
1–4′ × 1–2′ Sun or shade Low 60 14 Blue Wildrye
Elymus glaucus
2–5′ × 1–2′ Sun or shade Low 57 25 Deergrass
Muhlenbergia rigens
2–5′ × 4–6′ Full sun Low 56 4 California Gray Rush
Juncus patens
1–2.5′ × 1.5–2.5′ Sun or shade Moderate 56 14 Slender Rush
Juncus tenuis
0.5–2′ × 0.5–1.5′ Full sun Moderate 56 14 Purple Needlegrass
Stipa pulchra
1.5–3′ × 1.5–3′ Full sun Very low 52 6 Big Squirreltail
Elymus multisetus
1–2′ × 0.5–1.5′ Full sun Very low 52 25 Saltgrass
Distichlis spicata
0.5–1.5′ × 2–6′ Full sun Low 49 7 Foothill Needlegrass
Stipa lepida
1–2′ × 1–2′ Full sun Very low 49 6 Pine Bluegrass
Poa secunda
0.5–2′ × 0.5–1′ Full sun Low 46 29 Spike Bentgrass
Agrostis exarata
1–3′ × 0.5–1.5′ Sun or shade Moderate 45 15 Alkali Sacaton
Sporobolus airoides
1.5–4′ × 2–3′ Full sun Low 44 6 Creeping Wildrye
Elymus triticoides
2–4′ × 2–4′ Sun or shade Low 40 30 Meadow Barley
Hordeum brachyantherum
1–3′ × 1–2′ Full sun Low 40 16 Clustered Field Sedge
Carex praegracilis
0.5–2′ × 1–3′ Sun or shade Moderate 37 19 Junegrass
Koeleria macrantha
1–2′ × 1–2′ Full sun Low 36 5 Cane Bluestem
Bothriochloa barbinodis
2–4′ × 1.5–3′ Full sun Low 35 3 Coast Range Melic
Melica imperfecta
1–3′ × 1–2′ Part shade Low 32 1 Santa Barbara Sedge
Carex barbarae
1.5–3′ × 2–4′ Sun or shade Moderate 31 19 Seashore Bentgrass
Agrostis pallens
0.5–2′ × 1–3′ Sun or shade Low 29 15 California Melic
Melica californica
1.5–4′ × 1–2′ Sun or shade Low 26 1 Near water These need ground that stays wet: a creek bank, a low spot that holds water, or irrigation you keep up.Trees Arroyo Willow
Salix lasiolepis
15–35′ × 15–30′ Full sun High 91 334 Goodding's Black Willow
Salix gooddingii
20–50′ × 20–30′ Full sun High 82 334 White Alder
Alnus rhombifolia
40–80′ × 25–40′ Full sun High 78 198 Fremont Cottonwood
Populus fremontii
40–100′ × 30–60′ Full sun High 55 238 Shrubs Narrowleaf Willow
Salix exigua
6–20′ × 10–20′ Full sun High 77 334