Corylus colurna L.
Corylus colurna
Corylus colurna, also known as the Turkish hazel or Turkish filbert, is a deciduous tree native to Eurasia. It can reach heights of up to 25 meters (82 feet) with a stout trunk up to 1.5 meters in diameter. The tree has a slender, conical crown when young, which broadens with age. The bark is pale grey-buff with a thick, corky texture. The leaves are deciduous, rounded, 6–15 centimeters long and 5–13 centimeters across, softly hairy on both surfaces, with a coarsely double-serrate to shallowly lobed margin. The flowers bloom in early spring before the leaves and are unisexual, with single-sex catkins. The male flowers are pale yellow and 5–10 centimeters long, while the female flowers are very small and largely concealed in the buds. The fruit is a nut about 1–2 centimeters long, surrounded by a thick, softly spiny and bristly involucre (husk) 3 centimeters in diameter. The nuts are borne in tight clusters of 3–8 together.
Details
Fagales
Betulaceae
Corylus
The nuts of Corylus colurna contain fats, proteins, carbohydrates, and various minerals. The tree's bark and leaves also contain phenolic compounds and tannins.
Corylus colurna is widely cultivated as an ornamental tree in Europe and North America. It is tolerant of difficult growing conditions in urban situations, making it popular for civic planting schemes. The tree is used as a shade tree and street tree in urban areas due to its dense shade and ability to withstand air pollution. It is also used for fruit, difficult and dry sites, naturalistic areas, and street trees. Additionally, it serves as a rootstock for grafting nut-bearing common hazel cultivars.
Early spring
Autumn
25 meters (82 feet)
Pale yellow (male flowers), red styles visible on female flowers
Moist, well-drained soil and full sun. Tolerant of heat, cold, drought, and alkaline soils once established.
Info
Pannon Flora Ltd. was founded on December 13, 1999, by Gábor Janik, who retains 95% ownership. Janik holds an MSc in Horticulture from the University of Horticultural Sciences (1986) and an Advanced Professional English Certification from the College of International Trade (1990). The company specializes in bird feed production and export, primarily serving markets in Italy, Germany, the Netherlands, and the UK, alongside cultivating and distributing imported/exported horticultural seeds. It maintains exclusive partnerships with JOEUN Seed (South Korea) and Takii Europe (Japan), a leader in professional seed breeding and production. Pannon Flora collaborates with certification bodies such as NÉBIH (National Food Chain Safety Office), MERT Kontroll, and SGS Hungary to ensure compliance and quality. The company works with approximately 400 Hungarian growers, ranging from small-scale producers (under 5 hectares) to mid-sized farms and large-scale agricultural enterprises. This profile emphasizes agribusiness expertise, technical partnerships, and operational scalability tailored to international client needs.
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