Trees whose names start with the letter L form a heterogeneous group, where massive forest hardwoods, tropical fruit trees, and widely used ornamental shrubs coexist in urban areas. Behind this simple alphabetical initial lie species with very different ecological requirements, sometimes confused with each other due to a misleading vernacular name. Reviewing these species allows for a better understanding of their place in today’s gardens, forests, and urban landscapes.
Laurel: a common name, several trees with no botanical link
The word “laurel” refers in gardening to at least five species belonging to distinct botanical families. The bay laurel (Laurus nobilis), the only true laurel in the strict sense, is part of the Lauraceae family. The cherry laurel (Prunus laurocerasus) belongs to the Rosaceae, the laurustinus (Viburnum tinus) to the Adoxaceae, and the oleander (Nerium oleander) to the Apocynaceae.
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This confusion has practical consequences. The bay laurel is edible and used in cooking, while the cherry laurel produces toxic leaves containing cyanogenic compounds. Planting one instead of the other due to labeling errors is a regularly reported case. When browsing a list of trees starting with L, one quickly realizes the extent of this polysemy surrounding the single word “laurel”.
The bay laurel and the laurustinus are among the species frequently recommended for dry gardens, due to their tolerance for poor soils and prolonged periods without watering. The laurustinus has the additional advantage of offering a winter white flowering, rare among evergreen shrubs available in nurseries.
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Linden and sweetgum: two hardwoods in L often overlooked
The linden (Tilia) is known in English as “lime tree” or “linden”, which sometimes causes it to appear under the letter L in international nomenclatures. In French, it is listed under T, but its direct cousin, the large-leaved linden (Tilia platyphyllos), is often confused with other species of the genus in forest inventories.
The sweetgum (Liquidambar styraciflua), however, does start with L and deserves special attention. Native to North America, it is distinguished by its autumn foliage that changes from bright yellow to deep purple. Its corky bark and spiky capsule-shaped fruits make it recognizable even in winter.
Bark and foliage: identification criteria for sweetgum
To avoid confusing the sweetgum with certain maples that have similar lobed foliage, two reliable clues are:
- The leaves of the sweetgum are alternate on the branch, while those of maples are opposite. This detail, visible without a magnifying glass, is enough to decide.
- The bark of the sweetgum develops deep corky ridges on young branches, a characteristic absent in comparable-leaved maples.
- The fruits of the sweetgum are spiky spheres that persist on the tree for part of the winter, while maples produce winged samaras.
Indian lilac: an L tree suitable for small urban gardens
The Indian lilac (Lagerstroemia indica) is experiencing a notable resurgence of interest in the development of small plots and front yards. Its contained size (often a few meters tall at maturity) and its abundant summer flowering, from pink to white, make it a particularly sought-after specimen.
Unlike the common lilac (Syringa vulgaris), which blooms in spring and can become cumbersome, the Indian lilac offers a flowering period shifted to summer. This characteristic makes it complementary in a garden where one wishes to stagger blooms over several months.
Drought resistance and exposure
The Indian lilac tolerates prolonged heat episodes well once established, which explains its growing presence in water-wise garden projects. However, it does not tolerate prolonged frosts below about minus ten degrees, limiting its planting to areas with moderate winters.
Its smooth, peeling bark, revealing cinnamon to light gray hues, constitutes a decorative asset even outside the flowering period. This winter aesthetic aspect is often underestimated when choosing in nurseries.
Lime tree and lychee: tropical fruit trees in L
Several tropical fruit trees have names starting with L, but two deserve to be distinguished due to their frequent confusion with closely related species. The lime tree (Citrus aurantiifolia) produces limes, often referred to as “green lemons” in France, although it is botanically distinct from the yellow lemon.
The lychee (Litchi chinensis), native to southern China, belongs to the Sapindaceae family. It requires a humid subtropical climate to bear fruit and cannot be grown in the ground in most of metropolitan France. These two species illustrate the hidden diversity behind the category “trees in L”:
- The lime tree grows in warm tropical and Mediterranean areas, with a regular water requirement but good adaptation to calcareous soils.
- The lychee requires high atmospheric humidity and temperatures that do not drop below a few degrees above zero.
- The lemon tree (Citrus limon), sometimes confused with the lime tree, produces the classic yellow lemon and tolerates temperature fluctuations better.
Species in L and adaptation to climate stress
Among the trees starting with L, certain species regularly appear in recommendations related to drought-resistant plantings. The bay laurel, laurustinus, and some cultivars of lilac fall into this category, as they tolerate well-drained soils and spaced watering.
This trend towards water-wise plantings reshapes the plant palettes offered by landscapers, even in regions once considered sufficiently watered. The L species provide an underutilized reservoir of choices, beyond the perennial olive trees and cypress.
Correct identification of these species remains a prerequisite. Confusing a bay laurel with a cherry laurel not only poses a culinary problem: it can distort a planting plan designed for water resilience, as the two do not have the same root needs or tolerance for dry soil.