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Meyer lemon
meeṭha limu (میٹھا لیموں)[unverified]
Citrus × meyeri
- punjab plains
- pothohar
International hardiness
- USDA 8-11
- RHS H3
- AU: Subtropical, Warm temperate, Mediterranean
Meyer lemon (Citrus × meyeri) is a small, broadleaf evergreen citrus tree or large shrub in the family Rutaceae, prized for its relatively sweet, thin-skinned, lemon-like fruit.123 It is a hybrid between citron (Citrus medica) and a mandarin/pomelo-type citrus, and is native to China, where it was discovered and introduced into the United States by the plant explorer Frank N. Meyer in the early 1900s.235 For a homesteader, its appeal is its manageable size and adaptability: it has the best winter hardiness of any lemon-type fruit, grows happily in a container that can be moved indoors, and fruits at a modest scale that suits a small yard or a sunny corner of a glasshouse.12
Identification is straightforward once the fruit is on the tree. The Meyer is a small tree, typically about 6 to 10 feet (1.8 to 3 m) tall outdoors in the ground, clothed in shiny, dark green, aromatic evergreen leaves that smell of citrus when crushed.135 It carries waxy, fragrant white blossoms, produced year-round in warm climates, that are typical highly scented citrus flowers.15 The fruit is large and rounded, roughly 3 inches (about 7.5 cm) across, with a smooth, thin skin that lacks the rough texture and pronounced nipple of a true lemon.1 As it ripens the skin deepens from yellow to a rich golden yellow, and may take on an orange or rosy tint if left on the tree.24 The flesh is noticeably juicier, sweeter, and less acidic than a standard lemon, with a more complex, floral flavour.124
Growing Meyer lemon
Meyer lemon is generally hardy outdoors in USDA zones 9 to 11, and although it has the best winter hardiness of any lemon-type fruit, it still needs protection from freezing in colder areas.14 NC State Extension is blunt that the tree cannot survive frosts, and recommends growing it in containers that can be brought indoors in zones below about 8b to 9a.3 In practical terms, outdoor trees survive down to about 20°F (−6.7°C) but suffer foliage damage, and the fruit itself is damaged below 32°F (0°C).2 In cooler climates it is commonly grown in containers indoors or in a greenhouse, provided it gets ample light and warmth.123
Give it full sun for best results. The tree tolerates light to partial shade, but full sun gives the best overall performance and the heaviest fruit production.134 Meyer lemon is normally bought as a nursery tree rather than raised at home: named citrus cultivars like this one are propagated vegetatively, by grafting or budding onto a citrus rootstock to keep the variety true and control the tree’s size, and most retail Meyers are sold as grafted plants such as the ‘Improved Meyer’ selection.34 The sources here do not give a single recommended soil mix, exact plant spacing, or a precise time-to-fruit figure for the Meyer, so rather than invent numbers, treat it as any container citrus: a free-draining medium, steady warmth and light, and room for the small 6-to-10-foot frame to develop. A container also lets you move the plant under cover before the first frost, the main thing standing between a Meyer and a cold-climate winter.23
Harvest and uses
Meyer lemon is a generous and forgiving cropper. It can fruit more than once a year, and in many climates carries a heavy winter crop, so a single tree keeps a kitchen supplied through the cold months when little else is ripening.24 Harvest is guided by colour: fruit is ready as the skin turns from yellow to a deep golden yellow, and fruit left on the tree may shade toward orange or pick up a rosy blush.24 Because the skin is smooth and thin, the whole fruit, peel included, is useful.
The Meyer is used essentially like a lemon, but its juicier, sweeter, less acidic flesh and floral aroma make it a distinct ingredient in its own right rather than a simple substitute.124 Beyond the fruit, the tree earns its place ornamentally: it is grown for its handsome evergreen foliage and its strongly fragrant white blossom, which scents a patio or conservatory through much of the year.35
A note on virus-free stock
There is a piece of citrus history worth knowing before you buy. The original Meyer lemon selection introduced in 1908 was later found to be a symptomless carrier of citrus tristeza virus, a disease that can kill other citrus trees.12 The modern ‘Improved Meyer’ selections are virus-free for tristeza, which is why reputable nurseries sell the Improved form.12 If you grow other citrus, or live where citrus is grown commercially, choosing certified Improved Meyer stock protects both your tree and your neighbours’ orchards.
Safety and cautions
The Meyer lemon is grown as edible citrus and the fruit is used like an ordinary lemon, but the plant carries the usual citrus cautions.23 The research flags typical citrus allergen and medication concerns with the fruit, and notes that the leaves, peel, and citrus essential oils are toxic to pets.345 If you keep cats or dogs, keep them away from prunings, dropped leaves, and peel, and avoid leaving concentrated citrus oils within reach. This profile makes no medical claims; people who react to citrus or take medications that interact with it should treat Meyer lemon as any other lemon and seek qualified advice if unsure.