Kartuz温室苗圃（Kartuz Greenhouses）是一家位于美国加利福尼亚州圣地亚哥县北部的家族经营苗圃，地处Vista小镇。自1950年代初期创办以来，苗圃已持续经营超过70年，专注于稀有与异国植物的培育、杂交和邮购业务。苗圃的专营范围涵盖秋海棠、苦苣苔科植物、球兰与西番莲四大植物系列，在线目录常年提供超过1000个稀有品种的小苗供应。苗圃周一至周六以预约方式对外开放，周日休息。

历史与创始人

苗圃由Michael J. Kartuz先生（业内常称Mike Kartuz）于1950年代初期在马萨诸塞州创办，后来为追求更温暖的气候，移居至南加州Vista。Mike Kartuz于1950年代初期加入美国秋海棠协会（American Begonia Society），在长达70年的时间里，他既是一位多产的植物杂交专家，也与协会及其他育种者紧密合作。苗圃与美国秋海棠协会保持长期合作关系，其自行选育的秋海棠品种成为协会注册登录的重要来源。Mike Kartuz最终于2022年6月14日辞世，留下了丰富的育种遗产。著名杂交专家Brad Thompson与苗圃合作多年，”Brad Thompson Hybrids” 系列竹芋类与秋海棠类品种在收藏界享有盛誉。

植物专营系列

Kartuz温室苗圃以四大植物系列为核心，目录按科属系统编排，已涵盖超过60个植物科，1,000余个稀有品种在线供应。秋海棠（Begonias）系列最负盛名，按形态分为竹芋型（Cane-like）、根茎型（Rhizomatous）、灌木型（Shrub-like）和杂类（Miscellaneous）四大类，并提供C126A（Compact Cane 3株套装）、C126B（Tall Cane 3株套装）、C126T（Brad Thompson老品种3株套装）、C130（Rhizomatous 3株套装）、C131（Miniature Rhizomatous 3株套装）、C129（Shrub-like 3株套装）等专业组合。苦苣苔科（Gesneriads）系列涵盖芒毛苣苔属（Aeschynanthus）、Codonanthe、大岩桐、非洲紫罗兰等异国花卉。球兰（Hoya）与西番莲（Passionflower）系列则满足藤本与攀缘植物收藏家的需求。此外，苗圃还提供稀有开花植物（Rare Flowering Plants）大类，包括木槿（Hibiscus）、鸳鸯茉莉（Brunfelsia）、醉鱼草（Buddleia）、金鸡纳、瓷玫瑰（Etlingera）、蝎尾蕉（Heliconia）、蝎子草、海棠、长寿花、悬铃花、苘麻、龟背竹等。

订购与物流

苗圃采用纯邮购（Mail Order）模式运营，不设线下零售陈列，按预约参观。所有植株以2½至3¾英寸的塑料盆小苗状态出货，是已经生根的扦插苗或实生苗，非带花成品，需客户自行栽培成型。邮购通过美国邮政Priority Mail（航空件）发出，仅限美国境内，不接国际订单。标准邮费为$12.50，另加每株$2.00的处理费；订单处理通常在1周内完成，春季繁忙季节可能延长至4周。邮购业务全年向加州及西部、南部温和地区发货；对冬季严寒地区，10月中旬之后收到的订单会延至次年春季发货，客户可在订单备注中确认是否愿意承担冬季运输风险。苗圃已停止印刷版目录，目录通过网站持续更新，并提供Heat Pack（保温包）配件供寒冷地区客户选购。

栽培理念与文化信息

苗圃为每一件产品提供详细的栽培建议（Culture Codes），用字母标注植株的特殊栽培要求：(B)吊篮栽培、(D)12英寸以下矮生品种、(F)需荧光灯室内补光、(H)需高湿度环境、(M)6英寸以下迷你品种、(T)适合作玻璃瓶景（Terrarium）、(W)冬花品种。综合栽培要点包括：所有开花植物需一定直射光，秋海棠与苦苣苔科植物需充足散射光；湿度建议保持在50%以上；多数秋海棠与亚热带植物的适宜温度为夜间55°F、白天75°F，苦苣苔科与热带植物夜间不低于65°F；浇水原则为表土干透后浇透，避免盆底积水；施肥宜稀薄勤施。许多品种适合玻璃瓶景、室内盆景或温室栽培，植株描述中标注的耐寒温度为最低极限参考。

Kartuz Greenhouses – A 70-Year Family Rare & Exotic Plant Mail-Order Nursery in Vista, California

Kartuz Greenhouses is a family-run mail-order nursery located in Vista, in northern San Diego County, California. Founded in the early 1950s, the nursery has been operating continuously for more than 70 years, specializing in rare and exotic ornamental plants with a focus on breeding, hybridizing, and shipping young plants by mail. The catalog features over 1,000 varieties across its four key specialties: begonias, gesneriads, hoyas, and passionflowers. The nursery is open Monday through Saturday by appointment only and closed to the public on Sunday.

History and Founder

The nursery was founded by Michael J. Kartuz (known in the trade as Mike Kartuz) in the early 1950s, originally based in Massachusetts, before relocating to the warmer climate of Vista, California. Mike Kartuz joined the American Begonia Society (ABS) in the early 1950s, and for the next 70 years he combined his own skills as a hybridizer with those of other leading hybridizers. The nursery has been a long-time supporter of the ABS, and many of its own begonia hybrids have been registered through the society. Mike Kartuz passed away on June 14, 2022, leaving a deep legacy in rare-plant breeding. Renowned hybridizer Brad Thompson collaborated with the nursery for many years; the “Brad Thompson Hybrids” line of cane-type and other begonias remains highly prized by collectors.

Plant Specialties

Kartuz Greenhouses organizes its catalog around four core plant families plus a broad “Rare Flowering Plants” section, covering more than 60 plant families and over 1,000 varieties. Begonias are the flagship genus, divided into Cane-like, Rhizomatous, Shrub-like, and Miscellaneous groups; popular collections include the Compact Cane Collection (C126A), Tall Cane Collection (C126B), Brad Thompson Cane Collection (C126T), Rhizomatous Collection (C130), Miniature Rhizomatous Collection (C131), and Shrub-like Collection (C129), each offering three different varieties of the nursery’s choice. Gesneriads include Aeschynanthus (Lipstick Vines), Codonanthe, gloxinias, and African violet relatives, with cultivars such as Aeschynanthus ‘Big Apple’, ‘Fireworks’, Aeschynanthus pulcher, and Aeschynanthus gracilis in regular rotation. Hoyas and passionflowers round out the specialty vining plants, while the Rare Flowering Plants category spans Abutilon, Acalypha, Brugmansia, Brunfelsia, Buddleia, Fuchsia, Gardenia, Gingers, Hibiscus, Impatiens, Iochroma, Kalanchoe, Medinilla, Tibouchina, and many more subtropical and tropical ornamentals suited to container culture, terrariums, and indoor bonsai.

Ordering and Shipping

The nursery operates as a pure mail-order business without a walk-in retail display; visits are by appointment. All plants are shipped in 2½ to 3¾ inch pots as well-rooted cuttings or seed-grown starter plants, not as finished flowering specimens, allowing customers to grow them on. Orders ship via U.S. Postal Service Priority (Air) Mail, with shipping restricted to addresses within the United States; no international orders are accepted. Postage and packing is a flat $12.50 plus $2.00 per plant; processing typically takes about one week but may extend to four weeks during the busy spring season. Shipping is year-round to mild-winter areas of California and the southern and western states, while orders to cold-winter areas received after mid-October are held and shipped the following spring, with customers initialing a risk-acceptance note.

Cultural Information and Growing Philosophy

Each listing in the catalog includes a detailed cultural description and culture codes: (B) hanging basket, (D) dwarf under 12 inches, (F) fluorescent light culture, (H) humid conditions, (M) miniature under 6 inches, (T) terrarium plant, (W) winter flowering. General cultural guidelines: all flowering plants need some direct sunlight, while begonias and most gesneriads prefer only a few hours of direct sun or bright filtered light, especially in summer; insufficient light is the primary cause of poor growth and lack of bloom. Aim for at least 50% relative humidity, supplemented by pebble trays and regular misting with tepid water. Ideal temperatures are 55°F nights and 75°F days for most begonias and subtropicals, with a 65°F night minimum for most gesneriads and true tropicals. Water thoroughly from the top only when the growing medium becomes fairly dry, never letting plants stand in water. Fertilize lightly and frequently with a balanced formula. Many of the plants are recommended for terrarium, indoor bonsai, and small-space container gardening, with cold-hardiness figures in the listings serving as minimum-temperature guidance only.

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