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From 2017-2021 Jonathan experimented growing rare California-native and Mediterranean-climate species (and a few others) at a small nursery in Old Topanga. These were planted primarily in beds of pure sand or pure gravel. The plantings in these beds were only irrigated to supplement winter rainfall, and left unwatered to go dormant in summer.
Plant list
Perennials, annuals, shrubs
Achillea cretica
Aethionema grandiflorum
Alyssum murale
Amsonia tomentosa
Anagallis monellii
Arctotis acaulis
Artemisia ludoviciana ssp albula
Astragalus pomonensis
Astragalus trichopodus var phoxus
Aurinia saxatilis
Baileya multiradiata
Camissonia cheiranthifolia
Campanula carpatha
Campanula celsii ssp. celsii
Campanula hagiella
Campanula incurva
Campanula primulifolia
Cardopatium corymbosum
Carlina tragacanthfolia
Catanache caerulea
Centaurea lactucifolia
Centaurea redempta
Chorizanthe staticoides
Cirsium occidentale
Clarkia tenella
Cnidoscolus aconitifolius
Delphinium cardinale
Delphinium parryi
Delphinium staphysagria
Digitalis cariensis ssp. ikarica
Dudleya pulverulenta
Ebenus cretica
Ebenus sibthorpii
Echinops graecus
Echium gentianoides
Echium simplex
Echium wildpretii
Edmondia sessamoides
Eriastrum densifolium
Eriogonum grande var. rubescens
Eriogonum vimineum
Geranium maderense
Globularia alypum
Heuchera maxima
Iberis gibraltarica
Ipomopsis rubra
Jurinaea mollis
Lallemantia canescens
Leonotis nepetifolia
Lepechinia hastata
Lepidium montanum
Limonium peregrinum
Linanthus californicus (Leptodactylon californicum)
Linaria purpurea
Linum lewisii
Lotus scoparius
Lupinus excubitus
Lychnis coronaria
Lysimachia atropurpurea
Manulea altissima
Matthiola fruticulosa ssp. fruticulosa
Mentzelia laevicaulis
Mirabilis multiflora
Monardella antonina
Monardella villosa
Monardella viminea
Montanoa bipinnatifida
Montanoa grandiflora
Nepeta curviflora
Nepeta nepetella ssp aragonensis
Nepeta tuberosa
Papaver atlanticum
Papaver heterophyllum
Papaver rhoeas
Paracaryum racemosum
Penstemon ambiguus
Penstemon eatonii
Penstemon incertus
Penstemon parryi
Petromarula pinnata
Pseudognaphalium californicum
Reseda alba
Ruellia conzattii
Rumex vesicarius
Salvia canariensis
Salvia carduacea
Salvia lanigera
Salvia palaestina
Salvia phlomoides
Salvia pomifera
Salvia sclarea var turkestanica
Salvia spathacea
Salvia tingitana
Schizanthus litoralis
Seseli gummiferum
Silene gigantea ssp. hellenica
Silene laciniata
Sideritis oroteneriffae
Sparrmannia africana
Stanleya pinnata
Streptanthus insignis
Thymophylla pentachaeta
Tithonia diversifolia
Tithonia rotundifolia
Trichostema lanceolatum
Zauschneria canum
Geophytes
Allium sphaerocephalon
Aristea capitata
Babiana angustifolia
Babiana ecklonii
Babiana ringens
Babiana rubrocyanea
Babiana villosa
Bulbinella graminifolia
Calochortus clavatus
Calochortus venustus
Crocus goulimyi
Dahlia brevis
Dahlia campanulata
Dahlia coccinea
Dahlia imperialis
Dahlia rudis
Dahlia sorrensenii
Dichelostemma capitatum
Freesia speciosa
Gladiolus carmineus
Gladiolus floribundus
Haemanthus coccineus
Iris atropurpurea
Iris kirkwoodiae
Ixia curta
Ixia rapunculoides
Leucocoryne appendiculata
Leucocoryne coronata
Leucocoryne purpurea
Moraea villosa
Muscari comosum
Neomarica caerulea
Paeonia californicum
Scilla peruviana
Sisyrinchium bellum
Sparaxis tricolor
Tigridia pavonia
Tulipa agenensis
Tulipa cretica
Tulipa cypria
Grasses
Agrostis pallens
Aristida purpurea
Bouteloua curtipendula
Calamagrostis brachytricha
Festuca californica
Koeleria macrantha
Sporobolus wrightii
Stipa cernua
Stipa coronata
Stipa hymenoides
Stipa lepida
Stipa pulchra
Stipa speciosa