* 2 Linda S tewart Master Gardener Class #16 * Reduce water * - - PDF document

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* 2 Linda S tewart Master Gardener Class #16 * Reduce water * - - PDF document

Oct 25, 2022 281 likes •435 views

5/15/16 * Succulents in San Diego Botanic Garden Linda S tewart Master Gardener Class #16 1 * Water Thrifty * Water Wise * Low Water * Drought Resistant * Xeriscape not Zeroscape * 2 Linda S tewart Master Gardener Class #16 *

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Succulents in San Diego Botanic Garden

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*Water Thrifty *Water Wise *Low Water *Drought Resistant *Xeriscape – not Zeroscape

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*Reduce water *Improve Soil *Limit T

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*Use Appropriate Plants *Mulch *Irrigate *Maintenance

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*Reduce water *Improve Soil *Limit T

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*Use Appropriate Plants *Mulch *Irrigate *Maintenance

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*Water Conservation *Reduce Water Bills *Decrease Garden Maintenance *Increase Habitat for Wildlife *Increase Visual Appeal

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*Physical Removal *Herbicide – Round Up *Solarization *Sheet Composting

* Lasagna Gardening

*http://ucanr.edu/sites/scmg/Lawn_Replaceme

nt/Grass_Removal_Methods/

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*Background *Culture *Adaptation *Use

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KINGDOM ---PLANT AE DIVISION --- ANGIOSPERMS CLASS --- EUDICOTS ORDER --- MALPIGHIALES

FAMILY -- 30 SUCCULENT families GENUS --- 185+ SPECIES ---1222+ SUBSPECIES ---460 VARIETIES--- 1000’s CULTIVERS ??????

http://www.succulentguide.com

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*Old World Succulents

* So. Africa, T

ropical Africa, Madagascar , Canary Islands, etc.

* Euphorbias, Aloes, Crassulas

*New World Succulents

* Mexico, North and South America * Agaves, Crassulas, Cactus

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*Definition: A plant with the ability to store water *Water loss minimized by absent, reduced or cylindrical

to spherical leaves

*Fewer stomata...the breathing organs on the underside

  • f the leaves that open only at night

*Ribs to give more surface space *Waxy

, hairy or spiny surface to reduce air movement

*Gray

, dull color to reflect the sun

*Shaped to direct water to roots, and surface roots to

grab water

*Thick skin

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*Stem Succulents

* Stem is enlarged to contain the water-storing

tissues

* Stem is predominant feature * May have non-succulent

leaves, deciduous leaves

  • r no leaves

* May also have tuberous root - caudex * Stems and leaves contain chlorophyll

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*Leaf Succulents

* T

ypically small or no stems and enlarged leaves which store water

* Many shaped like rosettes or single pairs of

leaves with no stem

* No spines but may have sharp terminal

point

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* Family: Agavaceae * Rosette shaped * 6” to 15’ across * Leaves are generally fibrous, stiff * Some have beautiful leaf imprints * Marginal teeth * Most are monocarpic, dying after sending out a tall

flower spike

* Flower spike may have thousands of tiny flowers

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AGAVE PLANTS

  • A. victoriae reginae
  • A. attenuata
  • A. shawii
  • A. ‘Blue Glow”
  • A. filifera
  • A. Americana marginata
  • A. tequiliana

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* Family: Asphodelaceae * Range in size from 1” to 30’ * 700+ species * Rosette shape common but leaves grow from the

center rather than unfurl

* Leaves are soft, non fibrous * Annual orange or yellow flowers – not monocarpic * Flower spike with tubular blooms, long lasting and

showy

* Rolls Royce of healing plants

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ALOE PLANTS

  • A. cameronii
  • A. polyphylla
  • A. arborescens
  • A. vera
  • A. aristata
  • A. nobilis

A striata

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*Family: Euphorbiaceae *Diverse plant appearance but flowers alike *Some insignificant flowers and showy bracts *All plant parts contain milky latex which may

be simply allergenic or may be a virulent poison

*African euphorbias resemble American cactus

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EUPHORBIA PLANTS

  • E. tirucalli
  • E. ingins
  • E. pulcherimma
  • E. flananganii
  • E. trigona
  • E. genoudia
  • E. obesa
  • E. continifolia
  • E. characias
  • E. milii
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EUPHORBIA FLOWERS

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*Succulents are not a genus or species but just a

common name for plants with juicy stems, roots and/or leaves

*Cacti can be distinguished from other succul

ent plants by the presence of small cushion-like structures (areoles) from which, in almost all species, spines arise, as do flowers, branches, and leaves (when present). Merriam Webster

Dictionary

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*Family: Cactaceae *100+ genera and 1500+ species *Characterized by areoles, small spot like

cushions or budding organs

*3, 5, 10, or tens of cactus spines arise from

each areole

*Usually no leaves *Beautiful flowers *Spines provide protection from predators

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CACTUS

Ferrocactus cylindraceus.

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*Family: Crassulaceae *33-37 Genera, 5400+ species (differing data) *Fleshy leaves typically arranged in rosettes or

in symmetrical opposite pairs

*Nectar flowers *V

aried range of leaf shapes, size and textures

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CRASSULA PLANTS -- AEONIUMS

  • A. tabuliforme
  • A. kiwi
  • A. ‘Zwartkop’
  • A. ‘Cyclops’
  • A. arboreum
  • A. ‘Blushing Beauty’
  • A. ‘Starburst’
  • A. ‘Cabernet’
  • A. Arboreum ‘Purple Rose’
  • A. kiwi
  • A. glandulosum
  • A. haworthii

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CRASSULA PLANTS - ECHEVERIAS

  • E. Agavoides ‘Lipstick’
  • E. ‘T

eardrop’

  • E. ‘Black Prince’
  • E. ‘T
  • psy T

urvy’

  • E. ‘Doris T

aylor’

  • E. ‘Curlylocks’
  • E. Imbricata

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CRASSULA PLANTS - OTHERS

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*Different plants have similar form or behavior

despite being from different areas

*No explanation for the similarity that doesn’t

come from a common ancestor

*Adapt to the similar environment

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Ocotillo From Baja and SW USA

←

Alluaudia from Madagasgar

→

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BEFORE

←

AFTER

←

Photos courtesy

  • f Laura Eubanks
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BEFORE

←

AFTER

→

Photos courtesy of Laura Eubanks

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* T

allest plants in the rear

* Shortest plants in the front * Sun/shade/wind/north or south, east or west * Scale sizes to the property * Remember that some grow BIG, others stay small * Use boulders, rocks and gravel to enhance the

theme

* Don’t replace a flat lawn with flat plants. Use

mounds, hills or art to provide visual level changes

* Super easy to propagate

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A: Pinching out: creates growth for multiple cuttings or multi-headed plant. It forces side

  • stems. Throw the top away

. B: Optimal for creating a new plant from the top part and forcing new shoots from the stem. C: Deadheading: the top will root easily and the stem most likely won’t. D: Creates a longer stem but takes much longer to establish roots. Stem will likely wither E: Cutting here makes the head work harder to get established. Lower stem will likely die. Courtesy of Leslie Crawford

PROPAGATING STEMS

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PROPAGATING LEAF SUCCULENTS

Cut off a piece of the succulent just above a leaf on the stem Place the leaves on top of fairly dry soil. Spray with water occasionally . In 5-7 weeks they should be ready to plant. Cover the roots with some soil and be patient. Not all leaves will thrive

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BLUE

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RED

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SILVER/GRAY

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GREEN

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* Time to tour San Diego B

  • tanic Gard

en

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