{"product_id":"ironwood-lyonothamnus-floribundus-asplenifolius","title":"Catalina Ironwood - Lyonothamnus floribundus","description":"\u003ch2\u003eA Drought-Tolerant Native Tree That Thrives Where Others Struggle\u003c\/h2\u003e\n\u003cp\u003eCatalina Ironwood is a low water, evergreen California native tree for landscapes that need beauty, shade, erosion control, and long-term resilience with little to no summer irrigation once established.\u003c\/p\u003e\n\u003cp\u003eScientifically known as \u003cstrong\u003eLyonothamnus floribundus\u003c\/strong\u003e, this rare Channel Islands species combines fern like dark green foliage, red brown peeling bark, and seasonal clusters of white flowers. It is especially valuable in water-wise gardens, native plants collections, habitat restoration projects, and sloped sites where hardy rooting habits help stabilize hillsides. In cultivation, Catalina Ironwood typically grows 20 to 40 feet tall, with many trees reaching 25 to 50 feet tall and 15 to 25 feet wide; in the wild, it can reach 50 feet.\u003c\/p\u003e\n\u003cp\u003eDesigned by nature for dry summers, mild wet winters, rocky slopes, and difficult soils, Catalina Ironwood gives you a striking landscape tree without the constant irrigation, fertilizer, or high-maintenance pruning many ornamental trees demand.\u003c\/p\u003e\n\u003ch2\u003eWhy You’ll Love Catalina Ironwood\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eExceptional Drought Tolerance\u003c\/strong\u003e – Once established, Catalina Ironwood is incredibly drought-tolerant and thrives with little to no summer irrigation, making it suitable for xeriscaping and low water landscapes.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eStriking Peeling Bark\u003c\/strong\u003e – The red brown bark peels in strips, aging to gray and giving the tree year-round texture even when flowers are not displayed.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBeautiful Spring Blooms\u003c\/strong\u003e – Large clusters of white flowers appear from late spring into summer, typically May through July, with a soft look often compared to baby’s breath.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFast Growth Rate\u003c\/strong\u003e – Under good cultivation conditions, this tree can grow about 2 to 3 feet per year, quickly creating shade, privacy, and an open canopy similar to other \u003ca href=\"https:\/\/useyardwork.com\/collections\/landscape-trees\"\u003elandscape trees used to structure outdoor spaces\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eNative Plant Benefits\u003c\/strong\u003e – As a native species from the Channel Islands, it supports local wildlife, fits Mediterranean climate gardens alongside other \u003ca href=\"https:\/\/useyardwork.com\/products\/california-lilac-ceanothus\"\u003edrought-tolerant California natives like Ceanothus\u003c\/a\u003e, and generally requires no fertilizers.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCatalina Ironwood trees are highly drought-tolerant once established and prefer full to part sun. These trees are adaptable to different soil types as long as they are well-draining, including sandy, rocky, loamy, and clay-based soils that do not stay soggy. The tree is frequently used for erosion control due to its hardy rooting habits, which stabilize slopes and hillsides.\u003c\/p\u003e\n\u003cp\u003eIts evergreen canopy also offers a practical benefit: the tree can absorb and dampen ambient noise due to its dense, multi-layered foliage, making it useful near streets, garden edges, and outdoor living spaces where \u003ca href=\"https:\/\/useyardwork.com\/collections\/evergreen-trees\"\u003eevergreen privacy trees\u003c\/a\u003e are especially valuable.\u003c\/p\u003e\n\u003ch2\u003eWhat Makes It Different\u003c\/h2\u003e\n\u003cp\u003eMost ornamental trees require regular watering, fertilizer, or heavy pruning to keep them looking good. Catalina Ironwood comes from dry island ecosystems, where survival depends on deep rooting, drought adaptation, and strong structure.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCalifornia Channel Islands Heritage\u003c\/strong\u003e – Catalina Ironwood is a relic population that once grew widely across western North America millions of years ago. Today, the species is native to the Channel Islands, including Santa Catalina Island, Santa Cruz Island, and Santa Rosa.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eZero Summer Water Needs\u003c\/strong\u003e – Once established, Catalina Ironwood can thrive with little to no summer irrigation, unlike many non-native landscape trees that struggle without frequent watering, making it comparable in resilience to \u003ca href=\"https:\/\/useyardwork.com\/products\/desert-ironwood-tree-olneya-tesota\"\u003edesert ironwood trees for xeriscaping\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDistinctive Bark Character\u003c\/strong\u003e – The red brown bark peels in long strips, creating a striking texture that smooth-barked evergreens and many deciduous trees lack.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe genus \u003cstrong\u003eLyonothamnus\u003c\/strong\u003e is unusual and distinctive, and the species includes \u003cstrong\u003etwo subspecies\u003c\/strong\u003e. \u003cstrong\u003eLyonothamnus floribundus ssp. aspleniifolius\u003c\/strong\u003e, often called \u003cstrong\u003efern leaf Catalina Ironwood\u003c\/strong\u003e or \u003cstrong\u003eSanta Cruz Island Ironwood\u003c\/strong\u003e, is known for deeply lobed, fern-like leaves. \u003cstrong\u003eSubspecies floribundus\u003c\/strong\u003e, associated with Catalina Island and Santa Catalina Island, has simpler leaves when mature. The leaves can be either simple and linear or distinctly fern-like, depending on the subspecies, making leaf morphology an important note for collectors and native flora enthusiasts who may also appreciate \u003ca href=\"https:\/\/useyardwork.com\/products\/engelmann-oak-quercus-engelmannii\"\u003eother rare California oaks like Engelmann oak\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eThe common name \u003cstrong\u003e“Ironwood”\u003c\/strong\u003e derives from the tree’s incredibly hard and dense wood, historically used by Indigenous peoples for crafting tools. That heritage, combined with its rare island origin, gives this tree a stronger story than a common nursery shrub or imported evergreen.\u003c\/p\u003e\n\u003ch2\u003eHow to Establish Your Catalina Ironwood\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePlant in Fall or Winter\u003c\/strong\u003e\u003cbr\u003ePlant Catalina Ironwood in fall or winter so natural rainfall can help roots establish before the first dry summer. Choose a full sun to part sun location with well-draining soil and enough room for a tree that may become 25 to 50 feet tall and 15 to 25 feet wide.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eProvide Deep, Infrequent Water\u003c\/strong\u003e\u003cbr\u003eDuring the first year, water deeply about once a week in dry periods, allowing the soil to dry somewhat between waterings. In heavy soils, reduce frequency and check drainage carefully, because constant moisture can harm the plant.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eReduce Irrigation Over Time\u003c\/strong\u003e\u003cbr\u003eIn year two, shift to deep watering every two to four weeks during summer, depending on heat, soil, and exposure. By year three or four, established Catalina Ironwood trees often need little to no summer irrigation except during prolonged drought or extreme heat, similar to many \u003ca href=\"https:\/\/useyardwork.com\/collections\/trees\"\u003elarge mature landscape trees that provide instant shade\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eEnjoy Minimal Maintenance\u003c\/strong\u003e\u003cbr\u003eOnce established, this evergreen native tree needs only light pruning to remove dead, damaged, or crossing branches. Its bark will peel in strips, its dark green foliage will remain year-round, and its white flowers will be produced in clusters from late spring into summer.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eFor best results, avoid overwatering, avoid poorly drained sites, and give the tree enough space to mature. Catalina Ironwood is cold hardy to USDA Zone 8a, which corresponds to temperatures as low as 10 degrees Fahrenheit, but young trees may still benefit from frost protection in exposed inland gardens.\u003c\/p\u003e\n\u003ch2\u003eTree Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eMature Size: Typically 25 to 50 feet tall and 15 to 25 feet wide; in cultivation, the tree typically grows 20 to 40 feet tall but can reach 50 feet in the wild. Some landscape specimens grow 20 to 35 feet tall with a narrow form and open canopy.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eGrowth Rate: Fast under favorable conditions, often 2 to 3 feet per year while young.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eClimate Zones: Best for USDA Zones 9-11, Sunset Zones 14-17 and 19-24; Catalina Ironwood is also cold hardy to USDA Zone 8a, which corresponds to temperatures as low as 10 degrees Fahrenheit.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSoil Requirements: Adaptable to clay, sandy, rocky, and loamy soils as long as drainage is good. Avoid heavy soils that hold water.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSun Exposure: Full sun to partial shade; Catalina Ironwood trees prefer full to part sun, much like \u003ca href=\"https:\/\/useyardwork.com\/products\/fern-pine-tree-podocarpus-gracilior\"\u003eFern Pine trees commonly used for privacy screens\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eBloom Period: May through July, with large clusters of white flowers in late spring to mid-summer.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eBotanical Name: Lyonothamnus floribundus; commonly sold as Lyonothamnus floribundus ssp. aspleniifolius.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFoliage: Evergreen, dark green leaves; leaves may be fern like or simple depending on subspecies.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eBark: Red brown bark peels in strips and weathers to gray with age.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eLandscape Uses: Specimen tree, shade tree, privacy planting, erosion control, slope stabilization, habitat garden, native plant grove, and water-wise landscape feature comparable in versatility to \u003ca href=\"https:\/\/useyardwork.com\/products\/tipu-tree-tipuana-tipu\"\u003eTipu trees used as fast-growing shade trees\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe Catalina Ironwood tree, scientifically known as \u003cstrong\u003eLyonothamnus floribundus ssp. aspleniifolius\u003c\/strong\u003e, is characterized by its striking, deeply lobed, fern-like leaves and red-brown bark that peels in strips. The Catalina Ironwood produces large clusters of white flowers in mid-summer, resembling baby’s breath, which adds to its ornamental appeal.\u003c\/p\u003e\n\u003ch2\u003eWho It’s Perfect For\u003c\/h2\u003e\n\u003cp\u003eIdeal for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eWater-conscious gardeners seeking a low water tree for drought-tolerant landscaping.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCalifornia native plant enthusiasts building gardens around native plants and regional flora.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eProperty owners needing fast-growing shade, privacy, or noise dampening in Mediterranean climates and who are also considering \u003ca href=\"https:\/\/useyardwork.com\/collections\/flowering-trees\"\u003eflowering trees suited to California gardens\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDesigners working with slopes, hillsides, and erosion control plantings.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHabitat restoration projects where a native Channel Islands species is appropriate.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCollectors interested in rare trees, fern leaf Catalina Ironwood, Santa Cruz Island Ironwood, or the unique leaf morphology of Lyonothamnus floribundus ssp. aspleniifolius.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIf you want an evergreen tree with strong drought tolerance, striking bark, white summer flowers, and practical value in a real landscape, Catalina Ironwood fits beautifully. It is especially useful where irrigation must be limited, where slopes need stabilization, or where a garden needs a native tree that gets better with age.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eHow much water does it really need?\u003c\/strong\u003e\u003cbr\u003eDuring the first year, Catalina Ironwood needs deep, regular watering to establish roots, usually weekly in dry weather if the soil drains well. In the second year, reduce to deep, infrequent watering every few weeks. Once established, Catalina Ironwood is incredibly drought-tolerant and thrives with little to no summer irrigation, making it suitable for xeriscaping.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill it survive frost?\u003c\/strong\u003e\u003cbr\u003eCatalina Ironwood is cold hardy to USDA Zone 8a, which corresponds to temperatures as low as 10 degrees Fahrenheit. Young plants are more vulnerable than mature trees, so protect new plantings from cold wind, hard frost, and exposed inland conditions during the first few winters.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow fast does it grow?\u003c\/strong\u003e\u003cbr\u003eCatalina Ironwood is considered fast-growing in good conditions and may add 2 to 3 feet per year while young. In cultivation, the tree typically grows 20 to 40 feet tall but can reach 50 feet in the wild. A common landscape size is 25 to 50 feet tall and 15 to 25 feet wide, though some specimens stay closer to 20 to 35 feet with a narrow form and open canopy.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs it messy?\u003c\/strong\u003e\u003cbr\u003eIt is not a sterile or perfectly tidy tree. Expect some leaf drop, dried flower clusters, and bark strips as the red brown bark peels. Many gardeners consider this part of its ornamental character, but occasional cleanup may be needed around patios, paths, or formal garden areas.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I grow it in a container?\u003c\/strong\u003e\u003cbr\u003eYoung Catalina Ironwood plants can grow in containers temporarily, but long-term container cultivation is not practical for most gardeners. This species wants to become a tall tree with a strong root system, evergreen canopy, and mature bark character. If grown in a pot while young, use excellent drainage and avoid overwatering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the difference between the subspecies?\u003c\/strong\u003e\u003cbr\u003eThere are two subspecies commonly discussed. \u003cstrong\u003eLyonothamnus floribundus ssp. aspleniifolius\u003c\/strong\u003e has deeply divided, fern-like leaves and is associated with Santa Cruz Island, Santa Rosa, and related island populations. \u003cstrong\u003eSubspecies floribundus\u003c\/strong\u003e is associated with Catalina Island and Santa Catalina Island and typically has simpler mature leaves. Some studies suggest the difference may be more of a leaf morphology continuum than a strict separation.\u003c\/p\u003e\n\u003ch2\u003eReady to Plant Your Catalina Ironwood?\u003c\/h2\u003e\n\u003cp\u003eStop struggling with water-hungry trees that fight California’s natural climate. Choose \u003cstrong\u003eCatalina Ironwood\u003c\/strong\u003e and enjoy a drought-tolerant native tree with evergreen foliage, red brown peeling bark, white late spring to summer flowers, and long-term landscape value.\u003c\/p\u003e\n\u003cp\u003ePlant it in full sun to part sun, give it well-draining soil, water deeply during establishment, and then let this Channel Islands species do what it has done for years in the wild: grow strong with minimal irrigation.\u003c\/p\u003e\n\u003cp\u003eSustainable choice. Low water once established. Striking beauty that improves with age.\u003c\/p\u003e","brand":"Yardwork Nursery","offers":[{"title":"24” Box","offer_id":42142875812013,"sku":"","price":1150.0,"currency_code":"USD","in_stock":true},{"title":"15 Gallon","offer_id":42488083906733,"sku":"","price":595.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0514\/8809\/6429\/products\/A334355B-D6A7-4F41-B075-607C325C3C00.jpg?v=1707262228","url":"https:\/\/www.useyardwork.com\/products\/ironwood-lyonothamnus-floribundus-asplenifolius","provider":"Yardwork","version":"1.0","type":"link"}