Pseudolarix amabilis (J.Nelson) Rehd.

Golden Larch has proved a showstopper in gardens, particularly in autumn with its golden yellow and later cognac-coloured foliage. For Hugh Johnson, it would be his first choice for a garden tree: ‘The perfect little open rosettes of needles are the softest, silkiest green; there’s a porcelain quality about the depth and texture of its autumn apricot-gold’ (Johnson 2010). For Sargent (1923), it was ‘one of the handsomest of all the conifers with deciduous leaves and one of the most beautiful trees which can be grown in eastern North America.’ The UK’s Royal Horticultural Society recognised its outstanding ornamental value with an Award of Garden Merit in 1976, retained to the present day. It is, however, neither as widely nor as commonly cultivated as these paeans might lead one to expect.

Various theories have been put forward over the years to explain its scarcity. Hiu-Lin Li (1968) suggested this may be due in part to the confusion surrounding its taxonomy and nomenclature (see below), while Anderson (1966) observed that in cultivation its seeds often fail to germinate; a consequence, he conjectures, of inbreeding among cultivated trees which are mostly descended from very few introductions. In recent years, however, there has been a discernible increase in the proportion of viable seed produced on cultivated trees, at least in northwest Europe (T. Christian pers. obs.), suggesting that environmental rather than genetic factors affect seed set, while the fact that Pseudolarix has a mast cycle has hitherto been very poorly appreciated. Another factor doubtless involved is the rather exacting requirements that must be met for this tree to grow well rather than badly.

The natural distribution of Pseudolarix has been difficult to define. Broadly speaking it is native to the lower Yangtze valley in southeastern China, but many trees in what could be native habitat are planted specimens, and few sources mention spontaneous populations. As early as 1921 it was stated that ‘there are good reasons to believe that Pseudolarix was once very common within its range, but has been gradually cut off until very few of the trees are seen in a wild state today. The government Forest Service is planting a large area in an effort to save it from extinction’ (Chun 1921). Most herbarium specimens of Pseudolarix, both in China and abroad, have been obtained from planted trees, so they are not a reliable indicator of the natural range and have contributed to vastly exaggerated ranges in literature, such as in the Atlas of the Gymnosperms of China (Ying, Chen & Chang 2004).

According to Aljos Farjon, Pseudolarix is ‘very rare in the wild and occurs in a few remnants of primary forest on isolated mountains’ (Farjon 2017). A 2019 conservation assessment found P. amabilis met the criteria for Vulnerable, with population size likely to continue to decrease in the future (Yang & Christian 2019). However, one recent study (Zhou et al. 2022) found that genuinely natural P. amabilis was restricted to five scattered populations in the Yangtze valley; they determined that, based on their updated data, Pseudolarix would be raised to the category of Endangered in a new assessment. One such population occurs on Tianmushan, Zhejiang (see images below), where the best trees tower to 60 m tall – though most are much smaller – their crowns emerging from a species-rich forest that also includes Emmenopterys henryi, Liriodendron chinense, Liquidambar formosana, Quercus glauca and, perhaps most famously, wild trees of Ginkgo biloba (Watt 2017; Crane 2013).

Throughout its relatively narrow native range, Pseudolarix grows in what may be characterised as lowland mixed forest (<1500 m asl), rich in tree species and characterised by a warm-temperate climate with humid summers and relatively mild winters (Farjon 2017). Like most large-growing conifers, Pseudolarix regenerates best following disturbance, and young trees require ample light to grow well. As forests close in and secondary-succession broadleaves begin to dominate, Pseudolarix appears to become a scattered sentinel tree until such time as the next disturbance event occurs and more recruitment can take place. Unfortunately, in the few natural populations that exist, the necessary levels of disturbance to initiate recruitment are seldom achieved (Zhou et al. 2022).

In cultivation, too, trees require an open, sunny position to achieve their potential, though some shelter from cold, dessicating winds is advised. Seedlings and saplings will tolerate shade, but young trees will soon flag if the shade remains too heavy. Pseudolarix prefers a continental climate with warm summers and cool winters; it will grow in an oceanic climate, but without reliably warm summers it will be extremely slow. Once established, it can withstand very cold temperatures but only where summers are hot. Seedlings and young trees may benefit from mycorrhizal associations that are most likely to develop in proximity to established specimens (Li 1968) but this has not been properly investigated. Pseudolarix has a reputation for being slow growing, but Li (1968) reports several instances where trees in favourable situations put on around 30 cm per year. Trees need plenty of water and prefer a fertile and well-drained soil; moist situations will suit it too (Webster 1918), but like most conifers it is not tolerant of waterlogging. Several authors maintain that it will not tolerate alkaline or chalky conditions (e.g. Edwards & Marshall 2019; Bean 1976; Elwes & Henry 1912), perhaps because it only occurs on acidic soils in the wild or because alkaline soils are typically prone to drying out, but others claim that it does well in any light loamy well-drained soil. According to Li (1968), Slavin reported in 1967 that trees grew vigorously on limestone in Rochester, New York, while Anderson (1966) also found that trees in Missouri grew well and seeded themselves on shallow limestone soils. Thriving young trees have also been observed planted in a clay-with-flint cap over chalk in Hampshire, UK (T. Christian pers. obs.). A neutral to light acidic soil is certainly preferred, however, and a sandy, peaty, or loose loamy soil composition is ideal (pers. obs. A. Rammeloo).

With its relatively open crown and leaves providing dappled shade, Pseudolarix is an ideal conifer for underplanting with perennials and ground cover, and provided light levels are good enough for it to establish it can be a wonderful subject in a woodland garden. A single specimen is superb, but planted as a group, Pseudolarix will be spectacular. Pruning is not generally required except for formative purposes. Pseudolarix is often trained as a bonsai, so it performs well in containers. Young trees benefit from protection during the first winters; even a light frost can scorch the top shoots, but they recover in spring. When temperatures drop significantly, harsh frost may kill unprotected young specimens. Pseudolarix is usually a healthy tree and not prone to insect attack or disease, but a lack of known pathogens probably says more about its scarcity in gardens than its resistance to any given pest or disease.

Records indicate that Pseudolarix was first cultivated in China around the 8th or 9th century CE (T’ang Dynasty). It was then common in eastern Zhejiang, especially around Taizhou and the Tiantai Mountains. This appears to be the origin of the earliest cultivated trees. Natural forests are likely to have been in abundance until the 11th–14th centuries (Ming Dynasty), but around the 18th–19th centuries they became scarce, apparently due to excessive deforestation (Li 1968).

Pseudolarix was introduced to western cultivation by Robert Fortune, who had first seen it in 1843 in Chinese gardens as potted plants. A decade later, in the autumn of 1853, he saw larger specimens growing near what he referred to as the monastery of Tsan-tsing, in the Tiantai Mountains in Zhejiang, southwest of Ningbo, at 300–400 m elevation. The trees were 35–40 m tall and about 45 cm dbh. He was impressed by the symmetrical structure of the trees: ‘The stems were perfectly straight throughout, the branches symmetrical, slightly inclined to a horizontal form, and having the appearance of something between the Cedar and the Larch’ (Fortune 1855). He was able to collect cones, which he sent back to England, but hardly any seed germinated and the few that did failed to grow on. The following autumn Fortune returned to the monastery in the hope of procuring more cones, but found none. Local monks informed him that Pseudolarix has a masting cycle, producing an abundant seed crop every other year. He heard of trees at another monastery higher up in the mountains that might have seed, and climbed to around 1200 m, where he found many mature specimens, apparently planted. These also lacked seed, but he was able to dig up some young plants which he sent to England in Wardian cases (Fortune 1855). Thus, although originally introduced in 1853, it was the 1855 sending that established the species in western cultivation. It is worth noting that Fortune discovered the tree in the same locality in the Tiantai Mountains that was the origin of the earliest cultivated trees in China (Li 1968).

The common name, Golden Larch, is generally understood to refer to the golden hues of autumn foliage and to be a translation of its common name in Chinese. However, Li (1968) pointed out that early Chinese descriptions from the T’ang Dynasty mentioned a ‘golden line’ in the leaf, presumably the bright ridge between the two glaucous bands of stomata on the undersides. Li argues, perhaps implausibly, that this is a more probable basis of the common name, rather than the yellow autumn colouring, which is of short duration and not representative of the overall appearance of the tree. The full name in Chinese, 金钱松 (jin qian song), translates as Golden-Coin Pine, an apparent reference to the fascicled leaves on the short branches, which in their arrangement resemble a coin.

Despite several introductions of this beautiful tree, Pseudolarix was never widely planted in Europe or North America. Most major botanical collections in our area will have a representative example; beyond such sites it remains rare, but it is increasingly being offered by specialist nurseries. The finest trees may be found in those areas that combine a warm summer, reasonably high rainfall, a not excessively cold winter, and light acidic soils. Providing its need for summer heat is met, Pseudolarix is very cold hardy. Tests in a controlled environment have shown that Pseudolarix can survive winter temperatures down to –45°C (Rammeloo 2025).

The largest trees in cultivation are possibly survivors from Fortune’s introduction, so they may well be seedlings dug up from a hillside in Zhejiang in 1854, or propagated from them. The largest by girth is at Carclew Estate in Cornwall, UK, measuring 20 m × 94 cm dbh in 2014 (The Tree Register 2025). In 1912, this was, for Elwes and Henry, ‘the finest tree we know of,’ reaching 10 m × 48 cm in 1902. For Bean (1914), the finest he had seen was at the Rovelli nursery at Pallanza, Italy, which had reached 21 m in 1912; this tree does not seem to have survived. A little over 20 m seems to be the maximum height recorded in European cultivation, rather shorter than the 60 m it reportedly reaches in the wild, and the 27 m it has achieved in the United States (see below). The tallest recorded in the UK was at Scorrier House in Cornwall, reaching 21 m in 1973, since lost (The Tree Register 2025), while in Europe the champion is a tree at the castle of Klasterec nad Ohri, Ústecký, Czechia, measuring 21.5 m in 2015 (Monumental Trees 2025). At Arboretum Kalmthout, Belgium, an old specimen reached 93 cm dbh in 2024, on a par with the UK champion. Based on a count of annual rings, it is estimated to have been planted before 1884. It is still vigorous and growing well, despite a fungus (Pholiota sp.) that has fruited at the base of the trunk. Two other old specimens were lost in storms in 1990 and 2004 (pers. obs. A. Rammeloo).

Sargent (1919) reported that trees from Fortune’s introduction were imported to the United States in 1859, to S.B. Parson’s nursery in Flushing, Long Island, New York, and to Hunnewell’s Pinetum at Wellesley, Massachusetts, before 1864. These original trees may not still stand, but a fine planting of Pseudolarix graces the banks of Bussey Brook at the Arnold Arboretum. Two of these trees were received in 1891 from Veitch & Sons in the UK, presumably from seed produced by trees sent in 1855 by Fortune. Two others were grown from seed received from Hunnewell Arboretum, collected from the trees purchased from Veitch in 1866. The tallest of the trees at the Arnold reached 24.5 m × 80 cm dbh in 2008 (Dosmann 2008; Sargent 1919). Jacobsen records two examples, one in West Hartford, Connecticut, 27.4 m × 70 cm dbh in 1988 and in Philadelphia, 25.9 m × 76 cm dbh in c. 1985, making these the tallest and second tallest records for cultivated trees (Jacobson 1996).

Wilson (1923) reported that though he had not seen Pseudolarix in Australasia nor South Africa, he expected it would probably ‘thrive in the strictly temperate regions where the rainfall is evenly distributed through the year or is a summer one.’ Despite the apt climate, it does not seem to be particularly popular in cultivation in Australia, where it is ‘available in the nursery trade but few trees [have been] established’ (HortFlora 2025). According to Don Teese (pers. comm. 2025), it has been regularly grown in small quantities by a few specialist nurseries since the 1990s, but it is now difficult to find. In Australia, it grows slowly, especially where it is dry, but performs better than Larix. Teese reports that his largest tree crops every few years, and hundreds of seedlings germinate under the tree but do not survive through the summer. Possibly the largest tree in Australia is at Blue Mountains Botanic Gardens Mount Tomah, New South Wales, planted in 1995 and reaching 13.8 m × 42 cm dbh in August 2025 (M. Carle pers. comm. via D. Teese). It is grown in New Zealand, with plants recorded at Christchurch Botanic Gardens and other areas nearby in the South Island (Manaaki Whenua – Landcare Research 2025).

Notwithstanding this tree’s long history in cultivation and its ornamental value, there are hardly any cultivars of Pseudolarix. The wild form would seem not to need improvement. A few descriptions of named selections exist, with very limited trace of them in nursery catalogues or collections. All are dwarf forms and probably none is really cultivar-worthy: according to Li (1968), they may be artificially dwarfed trees raised from seedlings or young plants, and there is no evidence that these plants represent a genetically dwarf variety. Three such forms are mentioned in the literature, see below. Nurserymen continue to report occasional atypical seedlings. Henry Kolster (pers. comm. to AR 2024) found a dwarf seedling and one with golden foliage in spring that later turned green. In both cases, the characteristics did not persist as the plants aged. Raf Lenaerts (pers. comm. to AR 2024) reported finding a variegated form with two pure white stripes along each leaf; it has been grafted successfully and may prove to be an interesting cultivar, but at the time of writing, it has not been named.