耐寒分區 10a 的溫度定義為何？
耐寒分區 10a 的定義為年平均極端最低氣溫為 30 °F 到 35 °F (−1.1 °C 到 1.7 °C)。 這是 10 區較冷的一半，總範圍從 30 °F 到 40 °F。
該數值是 1991–2020 年氣象紀錄中，每個冬季最冷夜晚的 30 年平均值，用於 2023 年美國農業部地圖。個別冬季的氣溫通常會低幾度，因此耐寒等級剛好為 10a 區的植物，若使用覆蓋物並放置在避風處將會受益。尚未了解自己所在分區的園藝愛好者，可以在比較植物前 透過郵遞區號查詢您的 USDA 耐寒分區。
哪些州屬於 10a 耐寒分區？
10a 區出現在美國本土的 6 個州。根據 2023 年 USDA 官方郵遞區號表，California, Florida, Texas, Arizona 和 Louisiana 擁有最多 10a 區的郵遞區號。
- California · 623 個郵遞區號
- Florida · 438 個郵遞區號
- Texas · 95 個郵遞區號
- Arizona · 71 個郵遞區號
- Louisiana · 6 個郵遞區號
- Nevada · 1 個郵遞區號
耐寒分區依據海拔和水域劃分，而非州界，因此大多數州跨越了多個分區。
10a 分區適合種植哪些植物？
PlantoScan 目錄中有 236 種植物在 10a 分區具耐寒性，這意味著 10a 分區落在它們的耐寒範圍內。 它們包括 52 種喬木, 44 種灌木, 35 種多年生植物、香草與花卉, 36 種藤本與攀緣植物。
樹木（適用於 10a 區） (52)
Gardenia
Gardenia jasminoides
Zone 8a – 11b
AI 生成
Magnolia Tree
Magnolia grandiflora
Zone 7a – 10a
Joseph McPhailCC BY 4.0iNaturalist已調整大小
Bird Of Paradise
Strelitzia reginae
Zone 9b – 11b
AI 生成
Fig Tree
Ficus carica
Zone 7a – 11b
圖片：PlantoScan
Camellia
Camellia japonica
Zone 6b – 10a
no rights reservedCC0 1.0iNaturalist
Elephant Ear Plant
Colocasia esculenta
Zone 8a – 11b
AI 生成
Oleander
Nerium oleander
Zone 8b – 11b
AI 生成
Live Oak
Quercus virginiana
Zone 7a – 10b
Clifton LaddCC BY 4.0iNaturalist已調整大小
Sago Palm
Cycas revoluta
Zone 8b – 11b
AI 生成
- Yucca Plant
- Corn Plant
- Rubber Plant
- Avocado Tree
- Orange Tree
- Lucky Bamboo
- Pomegranate Tree
- Norfolk Island Pine
- Lime Tree
- Italian Cypress
- Pineapple Guava
- White Bird Of Paradise
- Bay Laurel Tree
- Sasanqua Camellia
- Umbrella Plant
- Taro Plant
- Coast Live Oak
- Blackberry Plant
- Indoor Olive Tree
- False Aralia
- Monterey Cypress
- Japanese Aralia
- Alocasia Odora
- Hawaiian Ti Plant
- Spineless Yucca
- Giant Taro
- Cider Gum
- Oriental Arborvitae
- Xanthosoma
- Crimson Bottlebrush
- Weeping Bottlebrush
- Calamondin Orange
- Adams Needle Yucca
- Spanish Bayonet
- New Zealand Christmas Tree
- Song of India
- Tree Philodendron
- Cabbage Tree
- Ponytail Palm
- Chinese Banyan
- Chinese Hibiscus
- Lemon Tree
- Orange Jasmine
灌木（適用於 10a 區） (44)
Ashwagandha
Withania somnifera
Zone 10a – 12b
AI 生成
Arugula
Eruca sativa
Zone 5a – 10b
AI 生成
Aloe Vera
Aloe vera
Zone 10a – 12b
Carlos Domínguez-RodríguezCC BY 4.0iNaturalist已調整大小
Eggplant
Solanum melongena
Zone 10a – 11b
AI 生成
Crown Of Thorns
Euphorbia milii
Zone 9b – 12b
AI 生成
Caladium
Caladium bicolor
Zone 9b – 12b
AI 生成
Boston Fern
Nephrolepis exaltata
Zone 9a – 11b
AI 生成
Cyclamen
Cyclamen persicum
Zone 9a – 11b
Daniel CahenCC BY 4.0iNaturalist已調整大小
Polka Dot Plant
Hypoestes phyllostachya
Zone 10a – 11b
AI 生成
- Lemon Verbena
- Angel Wing Begonia
- Potato Plant
- Gardenia Bush
- Pencil Cactus
- African Milk Tree
- Indian Blanket
- Globe Amaranth
- Pickerelweed
- Chenille Plant
- China Aster
- Devils Backbone Plant
- Cleveland Sage
- Chinese Forget Me Not
- Lemon Button Fern
- Silver Dollar Plant
- Panda Plant
- Coontie
- Haworthia Cooperi
- Summer Snapdragon
- Mediterranean Spurge
- Candelabra Tree
- Madagascar Jewel
- Egyptian Star Flower
- Balfour Aralia
- Spider Plant
- Cast Iron Plant
- Elatior Begonia
- Xanadu Philodendron
- Jade Plant
- Scarlet Star
- Friendship Plant
- Hardy Elephant Ear
- Chinese Taro
- Bell Pepper
多年生植物、香草與花卉（適用於 10a 區） (35)
- DahliaDahlia pinnataPlantoScan
Dahlia
Dahlia pinnata
Zone 8a – 11b
Alfalfa
Medicago sativa
Zone 3a – 10a
AI 生成
Calla Lily
Zantedeschia aethiopica
Zone 8a – 10b
AI 生成
Zinnia
Zinnia elegans
Zone 9a – 13b
ErmellCC BY-SA 4.0Wikimedia Commons已調整大小
Snapdragon
Antirrhinum majus
Zone 7a – 10b
AI 生成
Stinging Nettle
Urtica dioica
Zone 3a – 10b
AI 生成
- CornflowerCentaurea cyanusPlantoScan
Cornflower
Centaurea cyanus
Zone 2 – 11
Red Ginger
Alpinia purpurata
Zone 9b – 12b
zebedeugalinhaCC BY 4.0iNaturalist已調整大小
Cardinal Flower
Lobelia cardinalis
Zone 3b – 11b
no rights reservedCC0 1.0iNaturalist
- Freesia
- Spearmint
- Banana Plant
- Rapeseed
- Peruvian Lily
- Lambs Quarters
- Cardoon
- Broccoli Plant
- African Daisy
- Swedish Ivy
- Society Garlic
- Turmeric Plant
- Paperwhite Narcissus
- Love In A Mist
- Tropical Milkweed
- Cockscomb
- Sacred Lotus
- Stromanthe Triostar
- Bears Breeches
- Corsican Mint
- Clivia Lily
- Siam Tulip
- Torch Ginger
- Belladonna Lily
- Tree Dahlia
- Foothill Penstemon
藤本與攀緣植物（適用於 10a 區） (36)
Spanish Flag
Ipomoea lobata
Zone 9a – 12b
AI 生成
Bougainvillea
Bougainvillea glabra
Zone 9b – 11b
Simon ScotlandCC BY 4.0iNaturalist已調整大小
Grape Vine
Vitis vinifera
Zone 5b – 10a
AI 生成
Watercress
Nasturtium officinale
Zone 5a – 11b
Dmitriy BochkovCC BY 4.0iNaturalist已調整大小
Nasturtium
Tropaeolum majus
Zone 9b – 11b
Antonio W. SalasCC BY 4.0iNaturalist已調整大小
Fava Bean
Vicia faba
Zone 2a – 11b
AI 生成
Mung Bean
Vigna radiata
Zone 9b – 13
renjus boxCC BY 4.0iNaturalist已調整大小
Wandering Jew Plant
Tradescantia zebrina
Zone 9a – 11b
AI 生成
- Purple Heart PlantTradescantia pallidaPlantoScan
Purple Heart Plant
Tradescantia pallida
Zone 8b – 12b
- Lipstick Plant
- Blue Passion Flower
- Pea Plant
- Audrey Ficus
- Split Leaf Philodendron
- Black Eyed Susan Vine
- Cebu Blue Pothos
- Moses In The Cradle
- Passion Fruit Vine
- Pink Jasmine
- Madagascar Jasmine
- Moonflower Vine
- String Of Bananas
- Cape Aloe
- Hindu Rope Plant
- Heavenly Blue Morning Glory
- Grape Ivy
- Ficus Altissima
- Fan Aloe
- Small Leaf Spiderwort
- Kangaroo Vine
- False Shamrock
- Arabian Jasmine
- Creeping Fig
- Hindu Rope Plant
- Sweet Potato Vine
- Variegated Monstera
多肉植物與仙人掌（適用於 10a 區） (34)
Blue Agave
Agave tequilana
Zone 9b – 11b
no rights reservedCC0 1.0iNaturalist
Prickly Pear Cactus
Opuntia ficus-indica
Zone 9a – 11b
no rights reservedCC0 1.0iNaturalist
String Of Pearls
Senecio rowleyanus
Zone 10a – 11b
Flickr user Forest and Kim StarrCC BY 2.0Wikimedia Commons已調整大小
Century Plant
Agave americana
Zone 8a – 11b
zebedeugalinhaCC BY 4.0iNaturalist已調整大小
Calico Kitten
Crassula pellucida
Zone 9b – 11b
no rights reservedCC0 1.0iNaturalist
Golden Barrel Cactus
Echinocactus grusonii
Zone 9b – 11b
Kevin FaccendaCC BY 4.0iNaturalist已調整大小
Queen Of The Night Cactus
Epiphyllum oxypetalum
Zone 10a – 12b
Daniel Pineda VeraCC BY 4.0iNaturalist已調整大小
Easter Cactus
Rhipsalidopsis gaertneri
Zone 10a – 12b
Patrícia MeesCC BY 4.0iNaturalist已調整大小
Elephant Bush
Portulacaria afra
Zone 10a – 12b
Henry de LangeCC BY 4.0iNaturalist已調整大小
- Burros Tail
- Peruvian Apple Cactus
- Fishbone Cactus
- Aeonium
- Moon Cactus
- Bunny Ear Cactus
- Foxtail Agave
- Easter Lily Cactus
- Beavertail Cactus
- Jelly Bean Plant
- Queen Victoria Agave
- Princess Pine
- Pincushion Cactus
- String Of Buttons
- Miniature Pine Tree
- Mexican Grass Tree
- Echeveria Agavoides
- Blue Myrtle Cactus
- Golden Sedum
- Coppertone Stonecrop
- Campfire Plant
- Propeller Plant
- Watch Chain Plant
- Ladyfinger Cactus
- Snake Plant
草類（適用於 10a 區） (10)
Lemongrass
Cymbopogon citratus
Zone 9b – 12b
AI 生成
Papyrus
Cyperus papyrus
Zone 9a – 12b
Shaun SwanepoelCC BY 4.0iNaturalist已調整大小
Purple Fountain Grass
Pennisetum setaceum
Zone 8a – 11b
AI 生成
Blue Grama Grass
Bouteloua gracilis
Zone 3a – 10b
Matt LavinCC BY 4.0iNaturalist已調整大小
Black Bamboo
Phyllostachys nigra
Zone 6a – 10b
the swamp assCC BY 4.0iNaturalist已調整大小
Deer Grass
Muhlenbergia rigens
Zone 7a – 10b
Millie BasdenCC BY 4.0iNaturalist已調整大小
Golden Bamboo
Phyllostachys aurea
Zone 6a – 10b
AI 生成
Side Oats Grama
Bouteloua curtipendula
Zone 3 – 10
Clifton LaddCC BY 4.0iNaturalist已調整大小
Giant Timber Bamboo
Bambusa oldhamii
Zone 8b – 11b
Carlos Domínguez-RodríguezCC BY 4.0iNaturalist已調整大小
蕨類（適用於 10a 區） (5)
Horsetail Plant
Equisetum hyemale
Zone 3a – 11b
no rights reservedCC0 1.0iNaturalist
Spikemoss
Selaginella kraussiana
Zone 10a – 11b
EliasCC BY 4.0iNaturalist已調整大小
Australian Tree Fern
Cyathea cooperi
Zone 9a – 11
AI 生成
Blue Star Fern
Polypodium aureum
Zone 9b – 11b
AI 生成
Button Fern
Pellaea rotundifolia
Zone 10a – 12b
Saryu Mae 前 朝琉CC BY 4.0iNaturalist已調整大小
棕櫚類（適用於 10a 區） (6)
Parlor Palm
Chamaedorea elegans
Zone 10a – 12b
AI 生成
Pygmy Date Palm
Phoenix roebelenii
Zone 9b – 12
Josiah LonderéeCC BY 4.0iNaturalist已調整大小
Bamboo Palm
Chamaedorea seifrizii
Zone 10a – 11b
Ricard Busquets ReverteCC BY 4.0iNaturalist已調整大小
European Fan Palm
Chamaerops humilis
Zone 7b – 11b
AI 生成
Lady Palm
Rhapis excelsa
Zone 9b – 11b
AI 生成
Chinese Fan Palm
Livistona chinensis
Zone 9a – 12b
AI 生成
其他植物（適用於 10a 區） (14)
Petunia
Petunia hybrida
Zone 9a – 11b
Bonnie SemmlingCC BY 4.0iNaturalist已調整大小
Strawberry Plant
Fragaria ananassa
Zone 3a – 10b
Николай СоболевCC BY 4.0iNaturalist已調整大小
Mustard Greens
Brassica juncea
Zone 8a – 11b
Raja Sekhar ChimiralaCC BY 4.0iNaturalist已調整大小
Mexican Petunia
Ruellia brittoniana
Zone 8a – 11b
Greg III EsperaCC BY 4.0iNaturalist已調整大小
Water Hyacinth
Eichhornia crassipes
Zone 9a – 13b
Mattia MenchettiCC BY 4.0iNaturalist已調整大小
Zebra Plant
Haworthia fasciata
Zone 10a – 11b
AI 生成
Pumpkin Plant
Cucurbita maxima
Zone 3a – 11b
Gonzalo RogetCC BY 4.0iNaturalist已調整大小
Ghost Plant
Graptopetalum paraguayense
Zone 9b – 11b
圖片：PlantoScan
Wasabi Plant
Wasabia japonica
Zone 7a – 10b
no rights reservedCC0 1.0iNaturalist
哪些熱門植物在 10a 分區無法越冬？
這些熱門植物需要比 10a 區更溫暖的環境才能在戶外越冬。請將它們作為室內植物種植，或種植在霜害前可移入室內的盆栽中，亦可作為每年春季重新種植的一年生植物。
Cosmos
Cosmos bipinnatus
Zone 10b – 13b
PlantoscanAI 生成
Marigold
Tagetes erecta
Zone 10b – 12b
PlantoscanAI 生成
Peace Lily
Spathiphyllum wallisii
Zone 11b – 12b
AI 生成
Pothos
Epipremnum aureum
Zone 10b – 12b
AI 生成
Zz Plant
Zamioculcas zamiifolia
Zone 10b – 12b
圖片：PlantoScan
Christmas Cactus
Schlumbergera bridgesii
Zone 10b – 12b
Victor Farjalla PontesCC BY 4.0iNaturalist已調整大小
Desert Rose
Adenium obesum
Zone 10b – 13b
AI 生成
Fiddle Leaf Fig
Ficus lyrata
Zone 10b – 12b
圖片：PlantoScan
Kalanchoe
Kalanchoe blossfeldiana
Zone 10b – 12b
AI 生成
如何在 10a 耐寒分區成功進行園藝？
成功的 10a 區花園依賴於耐寒分區為 10 或更低等級的多年生植物、灌木和樹木。耐寒分區剛好為 10a 的植物通常能度過一般的冬天，但若能覆蓋護根、設置防風林並種植在溫暖牆邊，對其生長更有利。
耐寒分區僅描述冬季寒冷程度。種植日期取決於您當地的春季最後霜日與秋季首次霜日，即使在同一個 10a 分區內，這些日期也可能相差數週——依郵遞區號查詢最後霜日計算器可提供您花園的確切日期。夏季高溫、降雨量和土壤排水性決定了耐寒植物是否能茁壯成長。微氣候也很重要：高架花圃、坡地和鋪面區域升溫較快，而低窪地在無風的夜晚則會聚集冷空氣。
分區溫度與郵遞區號：2023 年 USDA 植物耐寒分區圖，由 USDA 農業研究局與奧勒岡州立大學 PRISM 氣候小組提供。植物耐寒範圍來自 PlantoScan 的植物資料庫，僅供參考 — 當地環境、栽培品種與冬季防護措施會影響植物的存活率。