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Corylus maxima - Mill.
Common Name Filbert, Giant filbert
Family Betulaceae
USDA hardiness 4-8
Known Hazards None known
Habitats Woods, hedges and ravines[100].
Range S. Europe to W. Asia.
Edibility Rating  
Other Uses  
Weed Potential No
Medicinal Rating  
Fully Hardy Moist Soil Semi-shade Full sun


Corylus maxima Filbert, Giant filbert

Corylus maxima Filbert, Giant filbert
Physical Characteristics
 icon of manicon of shrub
Corylus maxima is a deciduous Shrub growing to 6 m (19ft) by 5 m (16ft).
It is hardy to zone (UK) 5 and is not frost tender. It is in flower from Apr to May, and the seeds ripen from Sep to October. The flowers are monoecious (individual flowers are either male or female, but both sexes can be found on the same plant) and are pollinated by Wind.The plant is self-fertile.
Suitable for: light (sandy), medium (loamy) and heavy (clay) soils. Suitable pH: acid, neutral and basic (alkaline) soils and can grow in very alkaline soils.
It can grow in semi-shade (light woodland) or no shade. It prefers moist soil. The plant can tolerates strong winds but not maritime exposure.

C. tubulosa.

Woodland Garden Sunny Edge; Dappled Shade; Shady Edge; Hedge;
Edible Uses
Edible Parts: Oil;  Oil;  Seed.
Edible Uses: Milk;  Oil;  Oil.

Seed - raw or cooked[22, 34, 46, 105]. It is rich in oil. Large and well flavoured, it can be eaten raw, cooked in cakes, pies, breads etc or used to make a plant milk[183]. The seed ripens in mid to late autumn and will probably need to be protected from squirrels[K]. When kept in a cool place, and not shelled, the seed should store for at least 12 months[K]. An edible oil is obtained from the seed.
Medicinal Uses
Plants For A Future can not take any responsibility for any adverse effects from the use of plants. Always seek advice from a professional before using a plant medicinally.

None known
Other Uses
Basketry;  Charcoal;  Hedge;  Hedge;  Oil;  Oil;  Wood.

The seed contains up to 65% of a non-drying oil, used in paints, cosmetics etc[13, 46, 57, 132]. The whole seed can be used to polish and oil wood[6]. Very easy and effective[K]. Plants can be grown as a tall hedge[29]. They need to be left untrimmed or only lightly trimmed if seed is required. Wood - soft, easy to split, not very durable, beautifully veined. Used for inlay work, small items of furniture, hurdles, wattles, basketry, pea sticks etc[7, 13, 23, 46, 61, 63, 66, 125]. The twigs are used as dowsing rods by water diviners[11]. The wood also yields a good quality charcoal, used by artists[63, 101].
Cultivation details
An easily grown plant, it succeeds in most soils, but is in general more productive of seeds when grown on soils of moderate fertility[11, 200]. It does less well in rich heavy soils or poor ones[11, 63]. Does well in a loamy soil[11]. Very suitable for an alkaline soil[11], but it dislikes very acid soils[17]. Plants are fairly wind tolerant[1, 11]. A very hardy plant but the male flowers can be damaged by heavy frosts at flowering time[200]. The filbert is often cultivated for its edible seeds[50], there are many named varieties[63]. It has often been hybridized with C. avellana in breeding programmes[11]. Plants are self-fertile but a more certain crop is obtained if more than one cultivar is grown[200]. The main difference between cob nuts and filberts is that the husk of a filbert is longer than the seed and often completely encloses it, whilst the husk on a cob nut is shorter than the seed[200]. Squirrels are a major pest of this plant, often decimating the crop of nuts[200]. Members of this genus bear transplanting well and can be easily moved even when relatively large[11].
Seed - best sown as soon as it is harvested in autumn in a cold frame[164]. Germinates in late winter or spring. Stored seed should be pre-soaked in warm water for 48 hours and then given 2 weeks warm followed by 3 - 4 months cold stratification[164]. Germinates in 1 - 6 months at 20°c[164]. When large enough to handle, prick the seedlings out into individual pots and grow them on in a cold frame or sheltered place outdoors for their first winter. Plant them out into their permanent positions in late spring or early summer[K]. Layering in autumn. Easy, it takes about 6 months[78, 200]. Division of suckers in early spring. Very easy, they can be planted out straight into their permanent positions.
Other Names
Found In
Weed Potential

Right plant wrong place. We are currently updating this section. Please note that a plant may be invasive in one area but may not in your area so it’s worth checking.

Conservation Status
IUCN Red List of Threatened Plants Status :
Related Plants
Latin NameCommon NameEdibility RatingMedicinal Rating
Corylus americanaAmerican Hazel31
Corylus avellanaHazel, Common filbert, European Filbert, Harry Lauder's Walking Stick, Corkscrew Hazel, Hazelnut52
Corylus avellana pontica 40
Corylus chinensisChinese Hazel20
Corylus colurnaTurkish Hazel, Chinese hazelnut, Turkish Filbert, Turkish Hazel31
Corylus cornutaBeaked Hazel, California hazelnut, Turkish Filbert, Turkish Hazel31
Corylus cornuta californicaCalifornia Hazel30
Corylus fargesii 20
Corylus feroxHimalayan Hazel, Tibetan hazelnut20
Corylus heterophyllaSiberian Filbert21
Corylus jacquemontiiIndian Tree Hazel30
Corylus sieboldianaJapanese Hazel30
Corylus sieboldiana mandschurica 30
Corylus tibetica 20
Corylus x colurnoidesTrazel30
Corylus x vilmoriniiChinese Trazel20
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Subject : Corylus maxima  

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