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Leaf celery
Leaf celery
Leaf celery
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Leaf celery
GenusApium
SpeciesApium graveolens
Cultivar groupSecalinum Group

Leaf celery (Apium graveolens Secalinum Group or Apium graveolens var. secalinum),[1][2][3][4] also called Chinese celery or Nan Ling celery, is a group of cultivars of Apium graveolens cultivated in East Asian countries for their edible, flavorful stalks and leaves.[5]

The stems are thinner than those of Western celery, and curved into round, hollow stalks. Also, unlike with Western celery, the leaves are used as well as the stalks.[6] It has a stronger taste and smell compared to celery. It is used as a flavoring in soups and sometimes pickled as a side dish.[7]

See also

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References

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Leaf celery

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from Grokipedia
Leaf celery (Apium graveolens var. secalinum), also known as Chinese celery, cutting celery, or smallage, is a herbaceous annual or in the family, cultivated primarily for its aromatic, celery-flavored leaves and slender, pencil-thin petioles rather than the thickened stalks of common (A. graveolens var. dulce). It typically grows 60–90 cm tall with branched, angular stems, long-petioled, parsley-like leaves divided into segments, small white flowers arranged in compound umbels, and small, aromatic fruits measuring 1–2 mm. The plant exhibits a pungent, slightly bitter flavor more intense than standard , and its diploid number is 2n = 22, with cross-pollination primarily by . Originating from wild celery forms in the marshy regions of temperate and western , leaf celery has been cultivated since at least 850 BCE, initially for medicinal purposes before evolving into a culinary staple in Mediterranean and East Asian cuisines. It likely developed from Asian wild variants, with varieties like Kintsai prominent in Chinese agriculture, and was introduced to regions such as from around 1930 for seed production as a . Historically, ancient and Romans used it as a flavoring , while its medicinal applications, including anti-inflammatory and properties, trace back to wild forms employed centuries before . Cultivation of leaf celery is less demanding than that of stalk celery, thriving in full sun to partial shade with fertile, consistently moist, well-drained and a . Seeds are sown indoors in late winter, germinating in 1–3 weeks under light and bottom watering, with transplants spaced 10–25 cm apart outdoors after the last ; it can be grown as an annual or overwintered as a biennial with mulching. Major production occurs in , where it is grown primarily for leaves and petioles, and in for seeds, with annual seed production in reaching approximately 40,000 tonnes as of 2015; it naturalizes readily via self-seeding in suitable conditions. with brassicas benefits gardens, as it repels pests like cabbage white . In culinary applications, leaf celery's leaves and stems are harvested young for fresh use in salads, garnishes, soups, stews, and stir-fries, imparting a strong aromatic flavor, while mature leaves suit cooked dishes and seeds serve as a or for extracting essential oils. It is particularly valued in East Asian recipes for its pungent taste and in Mediterranean dishes as a alternative to , with dried leaves used year-round for flavoring; additionally, its seeds and extracts contribute to traditional medicines for their bioactive compounds.

Taxonomy and botany

Classification

Leaf celery is classified as Apium graveolens var. secalinum, a variety of the species Apium graveolens L. belonging to the family Apiaceae, also known as the carrot or parsley family. The genus Apium encompasses several species, with A. graveolens being the primary one domesticated for culinary use, and leaf celery distinguished as the leaf-focused variant within it. This variety is taxonomically separate from other cultivated forms of A. graveolens, such as stalk (var. dulce) and or root (var. rapaceum), emphasizing its selection for aromatic foliage over thickened petioles or . Some classifications refer to it as A. graveolens subsp. secalinum, reflecting ongoing botanical refinements in varietal versus subspecific designations. Common synonyms for A. graveolens var. secalinum include cutting celery, Chinese celery, smallage, and celery leaf, highlighting its regional nomenclature and uses. The etymology of the species name traces to Latin: apium as the classical term for celery or parsley-like plants, possibly derived from a Celtic word for marshy habitats, and graveolens combining gravis (heavy or strong) and olens (smelling), denoting the plant's pungent odor.

Morphological features

Leaf celery (Apium graveolens var. secalinum) is an annual or biennial that typically grows to a height of 20-30 cm (8-12 in.), forming dense, bushy clumps suitable for compact cultivation. The plant develops erect, ascending stems that support a rosette of foliage, contributing to its overall compact and leafy appearance. The leaves, which are the primary portion, grow in dense rosettes and are , finely divided, and pinnately compound with serrated or coarsely toothed margins, closely resembling in structure but exhibiting a stronger, peppery aroma. The stems are thin, hollow, providing minimal structural bulk compared to the thick, fleshy petioles characteristic of stalk (A. graveolens var. dulce). In the second year, leaf celery produces small, creamy-white flowers arranged in compact umbels on branching inflorescences. These give rise to small, oval that are viable for and share the family's typical ribbed structure. The is fibrous, shallow, and superficial, consisting of a with lateral branches adapted to retain moisture in damp soils. The diploid chromosome number is 2n = 22. Compared to stalk , leaf celery emphasizes foliage development over stem thickening, resulting in a more herbaceous, leaf-centric growth habit with reduced emphasis on bulbous basal structures and a pronounced peppery flavor profile derived from its leaf chemistry.

Cultivation and growing

Environmental requirements

Leaf celery (Apium graveolens var. secalinum) is a cool-season crop that thrives in temperate climates with daytime temperatures between 16–21°C (60–70°F), where leaf growth is optimal. It tolerates light down to about 5°C (41°F) but is susceptible to bolting—premature flowering that reduces leaf quality—if exposed to prolonged temperatures above 24°C (75°F) or vernalizing cold (5–10°C for 10+ days). This variety performs best in regions with mild summers and adequate winter protection, avoiding extreme heat that can stress the and lead to poor yields. The plant requires well-drained, fertile loamy or sandy soils rich in to retain moisture without waterlogging, with an optimal range of 6.0–7.5. High organic content, such as from , supports development and uptake in these moisture-retentive conditions; fertilize with balanced organic amendments like at planting and side-dress with during active growth. Poor drainage can lead to , while overly compacted or sandy soils without amendments may cause inconsistent growth. Consistent is essential, providing 1–2 inches of per week to maintain evenly moist , particularly during dry spells, but excess should be avoided to prevent rot. Leaf celery benefits from partial shade to full sun exposure, ideally 4–6 hours of direct daily, which promotes bushy foliage without scorching in hotter conditions. Plants should be spaced 10–25 cm (4–10 inches) apart in rows 30–50 cm (12–20 inches) wide to allow for air circulation and prevent overcrowding. Common challenges include bolting triggered by heat stress, which diminishes harvestable leaves, and vulnerability to pests such as , slugs, and celery fly. Regular monitoring and organic controls, like mulching for moisture retention and slug barriers, help mitigate these issues in optimal environments.

Propagation methods

Leaf celery (Apium graveolens var. secalinum), also known as cutting celery, is primarily propagated by , though vegetative division is occasionally used in mild climates. Seeds are small, with approximately 2000-3000 per gram, and exhibit slow , typically requiring 14-21 days at temperatures of 18-21°C (64-70°F). For seed starting indoors, sow thinly on the surface of a moist soilless potting mix 10-12 weeks before the last expected frost, as light is needed for ; water from below to prevent disturbance. Place trays in a warm location under grow lights or in a sunny window, maintaining consistent moisture until seedlings emerge in 1-3 weeks. Thin seedlings to individual pots once they develop 2-4 true leaves, typically 6-10 weeks after sowing. Direct sowing is possible in spring after the last or in fall for overwintering in USDA zones 5-9, when temperatures reach at least 10°C (50°F); broadcast seeds surface-sown or very shallowly (no deeper than 0.6 cm) and thin seedlings to 10–25 cm apart in rows 30–50 cm once they appear 2-3 weeks later. This method suits cooler seasons but can be challenging due to uneven . Vegetative propagation via division is suitable for established in mild climates, where clumps are divided in spring to produce offsets; this method leverages the plant's biennial nature, allowing offsets to establish quickly. follows hardening off of indoor-started seedlings for 7-10 days in gradually increasing outdoor conditions; plant out after danger passes, spacing 10–25 cm apart in prepared beds, and thoroughly to encourage development. are harvest-ready in 50-60 days from , with outer leaves cut to promote regrowth. In USDA zones 5–10, leaf celery can persist as a short-lived or biennial with mulch protection on roots, often naturalizing in suitable moist conditions through self-seeding and overwintering. Once established, yield consists of continuous leaf harvests every 2-3 weeks by cutting outer stems, allowing the central rosette to produce new growth for extended production.

Culinary and medicinal uses

Culinary applications

Leaf celery, scientifically known as Apium graveolens var. secalinum, features a bold flavor profile characterized by intense and parsley-like notes accented by subtle peppery undertones, rendering it more potent than traditional stalk . Raw preparations highlight its pungent, aceous bite, while cooking softens the intensity, yielding a milder, sweeter essence with a tender-crisp texture that enhances various dishes. The leaves and slender stems are largely interchangeable in culinary contexts, allowing versatile application as both a fresh and a structural element in recipes. In East Asian cuisines, leaf celery—often termed "qin cai" in Chinese—serves as a staple for imparting aromatic depth, particularly in stir-fries, soups, and stews where its robust taste complements , , and savory proteins like or . It features prominently in Chinese dishes such as shredded , while Japanese preparations like celery leaf tsukudani preserve its essence through simmering in soy-based reductions. Korean namul-style seasonings transform blanched leaves into a peppery , and simple stir-fries with underscore its crisp adaptability in everyday meals. Western culinary traditions leverage leaf celery's parsley-adjacent qualities in herb blends, pestos, and garnishes, where it substitutes effectively for flat-leaf in Mediterranean-inspired recipes like or sauces. Celery leaf , blending leaves with nuts, , and , offers a vibrant, waste-reducing alternative to versions, ideal for or as an infused oil base. It integrates seamlessly into soups, stocks, and salads for added freshness, with its stronger profile elevating preparations or medleys. Preparation typically involves chopping or slicing the leaves and stems for raw incorporation into salads or cooking via , blanching, or to preserve vibrancy. For extended use, leaves can be dried into seasonings or frozen in portions, maintaining flavor for up to several months; harvesting outer leaves encourages regrowth in ongoing cultivation.

Medicinal properties

Leaf celery (Apium graveolens var. secalinum), a variety of , contains bioactive compounds similar to those in common , including such as and , which contribute to its properties. Phthalides, like sedanolide, are present in the leaves and have been associated with blood pressure regulation through vasodilatory effects. The plant is also rich in , including , , and , which help combat . In , leaf celery has been used as a in both and Chinese systems to support urinary health and reduce fluid retention. In , known as ajamoda, it aids digestion by stimulating appetite and relieving , while also reducing inflammation in conditions like . Chinese employs it to clear heat, resolve dampness, and promote water circulation, often for digestive discomfort and mild inflammation. Modern research highlights potential anti-inflammatory effects from its , which inhibit enzymes like COX-1 and COX-2 , suggesting benefits for inflammatory conditions. Studies on celery extracts, applicable to leaf varieties, indicate support for urinary health via action and mild antihypertensive properties, with phthalides relaxing vascular . Evidence for reduction remains low, with some animal studies showing minor lipid-lowering effects but limited human data. Nutritionally, leaf celery provides approximately 16 kcal per 100 g, with 2.9 g of , 3.1 mg of , 29.3 µg of , and notable content around 260 mg, contributing to its role in heart and bone health. These values underscore its low-calorie profile and density, though leaves may contain higher concentrations of certain vitamins compared to stalks. Precautions include avoiding medicinal use during due to its and uterine properties, which may increase risk. Individuals with stone predisposition should consult a healthcare provider, as contains oxalates that could exacerbate stones. Allergic reactions are possible in those sensitive to family plants, and interactions with blood-thinning or medications may occur. Common dosage forms include teas prepared from fresh or dried leaves, extracts standardized to phthalides, or direct consumption of fresh leaves in salads or juices, typically 250 mg of extract daily in studied interventions.

History and varieties

Origins and

Leaf celery, known botanically as Apium graveolens var. secalinum, derives from the wild celery species Apium graveolens, which is native to the Mediterranean wetlands and surrounding regions, with evidence of its presence dating back over 3,000 years. Wild forms of the plant, characterized by slender, hollow petioles and aromatic leaves, were initially gathered from marshy habitats in areas including modern-day , , and parts of the . Archaeological findings, such as celery remains from sites in dating to the 7th–9th centuries BCE, indicate early human interaction with these wild populations. Early domestication efforts focused on the plant's medicinal properties rather than culinary value, beginning with ancient civilizations around 1000 BCE. In , celery leaves and seeds were incorporated into funerary garlands, as evidenced by artifacts from tombs like that of (circa 1323 BCE), and used to treat ailments such as burns and digestive issues. The and Romans further adopted it, employing celery in religious ceremonies—such as wreaths for victors at the around 573 BCE—and for therapeutic purposes, including as an and , with records from the classical period (5th–4th centuries BCE) describing its sacred status. By the Roman era (circa 400 BCE onward), cultivation had spread across the Mediterranean for these uses, marking the transition from wild to intentional of leaf-heavy forms. Selection for distinct leaf celery varieties occurred independently in , where the plant was introduced from the Mediterranean via the region approximately 2,000 years ago during the (206 BCE–220 CE). In , local breeding emphasized tender, flavorful leaves over stalks, resulting in the variety known as Chinese celery, which was documented in agricultural texts like Qimin Yaoshu by the 6th century CE and further detailed in records (618–907 CE). This Asian lineage developed separately from European efforts, prioritizing leaf production for culinary and medicinal applications in East Asian cuisines. In , leaf celery persisted as "smallage," cultivated in medieval herb gardens from the onward for its aromatic foliage and seeds, often used as a . It was distinguished from emerging stalk varieties in the , when Italian breeders began selecting for thicker, solid petioles in the Dulce group, while smallage retained its slender, leaf-focused morphology. By the , targeted breeding in both and refined leaf celery traits, such as reduced bitterness and increased leaf yield, through selective propagation that built on centuries-old practices without altering its fundamental wild ancestry.

Common cultivars

Leaf celery (Apium graveolens var. secalinum) features several notable cultivars prized for their aromatic foliage and adaptability in gardens. These varieties emphasize strong celery flavor in the leaves over thickened stalks, making them suitable for culinary use as fresh or seasonings. One prominent Chinese heirloom is 'White Queen', characterized by long, slender white stems contrasting with bright green, aromatic leaves. This variety delivers a robust flavor, ideal for incorporation into Asian stir-fries and soups, and thrives in cooler climates with minimal blanching needs. In European traditions, 'Giant Red' stands out as a bolt-resistant heirloom with reddish-tinged stalks and upright growth reaching up to 3 feet, allowing for successive harvests of flavorful leaves. Its intense taste and taller habit make it valuable for continuous cutting in temperate gardens. Cutting celery types, such as the Dutch heirloom 'Par-Cel', form dense bunches resembling curly but with a potent essence, functioning as perennials in mild zones for repeated leaf harvests. These bunch-forming varieties, including similar ones like 'Afina', prioritize fine, textured leaves for herb applications in salads and broths. Asian cultivars further diversify options, with 'Nan Ling' (also known as Nan Qin Cai in ) featuring slender, hollow stems and delicate green leaves that impart a milder, herbaceous note to regional dishes like hot pots. Seeds for these cultivars are widely available through seed catalogs, supporting home cultivation in containers or open beds due to their compact nature. Breeding efforts for leaf celery since the early have focused on enhancing flavor intensity and resistance to diseases like , drawing from wild relatives to develop resilient strains without compromising the variety's core aromatic profile.

References

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