Gravel 9 Stairs Foot Bridge 8 Staff Only Suggested Maple Route

Green paths may be slippery and may not be suitable for all guests. 7 Rock Steps 11 10 STURDY SHOES with good tread are highly recommended for most trails.

STAY ON THE PATH to help protect our conservation collection of rare and endangered plants. EXIT SALIDA 15 5 ӞՌ 12 16 13 4 6 14

2 3 1 SELF-GUIDED TOUR

1. Five-Lobed Maple (Acer pentaphyllum) Critical to Conservation & 2. Giant Rose (Rosa odorata var. gigantea) Seasonally Unique 3. Katsura Tree (Cercidiphyllum japonicum) 4. Japanese Quince (Chaenomeles japonica) 10. Star Magnolia (Magnolia stellata) 5. Chinese Tulip Tree (Liriodendron chinense) 11. Wilson’s Barberry (Berberis wilsoniae) 6. Golden Larch (Pseudolarix amabilis) 12. Igiri Tree (Idesia polycarpa) 7. Great White Rhododendron (Rhododendron decorum subsp. 13. Chinese Emmenopterys (Emmenopterys henryi) decorum) 14. Evergreen Dogwood (Cornus capitata) N 8. Wilson’s Magnolia (Magnolia wilsonii) 15. Coliseum Maple (Acer cappadocicum subsp. sinicum) 9. Japanese Bigleaf Magnolia (Magnolia obovata) 16. Chinese Wingnut (Pterocarya stenoptera) January r Fe The IUCN Red List is a useful tool for determining the be br em ua rarity of and risk to a species. As with all scientific tools, ec ry D rankings are adjusted when new data is collected, but with r the rapid shifts to our global environment, it doesn’t always e M b a change fast enough. m r e c It is impossible to collect accurate v h data on EVERY species in the world o Least Concern N LC and just as impossible to have real-time tallies of the number of

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J u y l world’s biodiversity. The Garden does its part by preserving wild genetics Extinct in the to participate in ex situ research, Every season brings unique features to the Garden. Winter is the time EW Wild inter-garden metacollections, and, to enjoy the epic vistas and overlooks crossed by the architectural in the worst case, a safety net if wild beauty of bare trees. With the rains comes spring and the lush green conservation efforts fail. and riot of colorful flowers. Magnolias tend to peak in April while NE Not Evaluated dogwoods are coated with white and pale yellow flowers throughout Explore the IUCN Redlist of the season. With the onset of summer, cones and fruits begin to form Threatened Speices at iucnredlist.org and the late bloomers unfurl their buds. The heat also brings new smells including the burnt sugar scent of the Katsura tree. Slowly READING PLANT LABELS colors change and the warm yellows, oranges, and reds of fall signal Common names are not consistent or specific, the onset of winter dormancy and the cycle continues. but are sometimes based on the scientific name Plants are incredibly weather dependent and not every plant blooms and often easier to remember. and fruits every year. Follow the Garden on social media to see what’s Five-Lobed Maple in season. Acer pentaphyllum genus - e.g. specific epithet - Acer = Maple usually descriptive, e.g. from Greek: penta sonomabotanicalgarden = five,phyllon = leaf Apr Apr ar Ma ar Ma M y M y J J b u b u e n e n F F

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N N O O t t c c  EPWSEPSRKXLI[EPPEW gigantea spontanea var.

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CR EW EN VU NT LC R. chinensis Native to NE India, N Myanmar, & SW China & SW NE India, N Myanmar, to Native Acer pentaphyllum Acer China Sichuan Province, to Native odorata Rosa 1 2 key grandparents of many modern cultivated roses. modern cultivated many of grandparents key Considered one of the rarest maples in the wild. maples in the the rarest one of Considered ;MXLEPSRKHSVQERG] PIEǼIWWTIVMSHMXSJXIR out. leaf to May until waits Five-Lobed Maple Five-Lobed Giant Rose it uses hooked world, in the the tallest roses One of it climb 60-80 ft. Gene sequencing shows prickles to and

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LC LC EW CR EN VU NT EW CR EN VU NT Native to SW China SW to Native Acer cappadocicum Acer stenoptera Pterocarya China to Native 1 15 1 16 Most maples are known for their fall color, but this color, fall their for known maples are Most XVIIJIEXYVIWWEQEVEW JVYMXWXLEXGVIEXIEVIHLEPS spring. Coliseum Maple Chinese Wingnut with but samaras, to nutlets (similar strings of Long EZIV]HMǺIVIRXWXVYGXYVIMJ]SYPSSOGPSWIP]XYVR winter. into age and remain as they brown Apr Apr ar Ma ar Ma M y M y J J b u b u e n e n F F

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EW CR EN VU NT R R R C C C C C N N N E E E E E U U U U U U U U U U U U U U U U U U U U U U V V V V V V T T T T T T T T T T T T T T T T T T T T N N N N N N N N N N N N C C C C C C C C C C C C C L L L L W W W E E E X X X X X X X X E Emmenopterys henryi Emmenopterys China to Native Cornus capitata & Bhutan, China, India, Myanmar, to Native Nepal 13 1 14 Although it has a large native range, the range, native Although it has a large Although it is and rare. population is fragmented it its blooms, depending on climate, for renowned QE]FIXIR]IEVWSVQSVIFIJSVIMXWǻVWXFPSSQ 5EPI]IPPS[PSRKPEWXMRKǼS[IVWMRWTVMRKXYVR dimpled fruits in into age and develop pink as they wild. stable in the are Populations fall. Chinese Emmenopterys Dogwood Evergreen

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LC LC EW CR EN VU NT EW CR EN VU NT Cercidiphyllum japonicum Cercidiphyllum & China Japan to Native japonica Chaenomeles Japan to Native 3 4 Katsura Tree Katsura and olfactorily visually is both This tree seasonal marvelous provide leaves sensational. It’s GSPSVERHMRXLI[EVQQSRXLWXLI]KMZISǺE smell. burn sugar or candy cotton sweet Quince Japanese yellow hard to fruits in spring mature green Small but can be eaten Fruits apple-shaped fruits in fall. Sometimes cooked. or being bletted after only jellies. or used in preserves Apr Apr ar Ma ar Ma M y M y J J b u b u e n e n F F

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NT VU EW CR EN NT LC EW CR EN VU LC Liriodendron chinense Liriodendron & S China Central to Native amabilis Pseudolarix SE China to Native 5 6 .XƶWLEVHXSWTSXXLIǼS[IVWEQSRKXLIKVIIR and expansion Agricultural shaped leaves. T-shirt wild. in the this tree threatens trade timber its odd succulent- because of a true larch Not in the mature once shaped cones that disintegrate its for is also known This deciduous conifer fall. color. golden fall beautiful, but brief Chinese Tulip Tree Chinese Tulip Golden Larch

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N N O O O O O t t c c c c 1 2 Berberis wilsoniae China SW to Native polycarpa Idesia Taiwan & Japan, China, Korea, to Native 1 11 1 12 Wilson’s Barberry Wilson’s wonderful shrub has tolerant This drought WIEWSREPMX][MXL]IPPS[WTVMRKǼS[IVWTMROMWLVIH red. to yellow from ranging color berries, and fall Tree Igiri which means is dioecious This deciduous tree have We trees. and female male trees are there most are but the females on grounds, both pendulous fruits. their because of noticeable Apr Apr ar Ma ar Ma M y M y J J b u b u e n e n F F

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LC EN EW CR VU NT LC EW CR EN VU NT Magnolia obovata Magnolia Japan to Native stellata Magnolia Japan to Native 9 1 10 *ZIRMJ]SYQMWWXLIǼIIXMRKHMRRIVTPEXIWM^IH that leaves has remarkable this tree bloom in May, spring and 20 inches long throughout can reach unknown. are trends Population summer. causing being fragmented Wild populations are in fertility reduced and therefore inbreeding SǺWTVMRK-S[IZIVXLIXVIIMW[MPHP]KVS[RMR Japan. outside of gardens Japanese Bigleaf Magnolia Bigleaf Japanese Magnolia Star

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NT EW CR EN VU LC Rhododendron decorum decorum Rhododendron wilsonii Magnolia China to Native Native to China to Native 7 8 Great White White Rhododendron Great Magnolia Wilson’s at altitudes 1,900- story under in the forest Grows population is at risk The decreasing 3,000 meters. trade. and timber development agriculture from Can be pruned and shaped as a large shrub or shrub or Can be pruned and shaped as a large in the rhododendrons the many One of tree. small ,EVHIRFYXQSWXǼS[IVIEVPMIVMRXLIWTVMRK