Giant hazel

Corylus maxima | Also known as: Giant filbert | Rating: 0 votes | Print / Pdf

Giant hazel nuts: you would be crackers not to grow it.

Corylus maxima is a large deciduous shrub. Flowering in March, its pale yellow blooms are nothing special, but C. maxima produces nuts that can be roasted and eaten. Also known as giant hazel or giant filbert, it is also low maintenance. Giant hazel should be grown in full sun or partial shade. It typically thrives in well-drained yet moist soil, though it will tolerate most substrates apart from heavy clay. A stunning purple leafed cultivar also exists - C. maxima 'Purpurea'. This provides additional foliage interest to gardens throughout the year.

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Known dangers?
  • no
Height [m]
  • 6
Spread [m]
  • 5
Dominant flower colour
  • Yellow
Flower Fragrance
  • No, neutral please
Flowering seasons
  • Early spring
  • Mid spring
Foliage in spring
  • Green
Foliage in summer
  • Green
Foliage in Autumn
  • Yellow
Propagation methods
  • grafting
  • seed
  • layering
Growth habit
  • Upright
  • Neutral
  • Alkaline
Hardiness zone
  • Z4-9
Heat zone
  • H9-1
Winter temperatures [°C]
  • -34 - -1
Heat days
  • 0 - 150
  • well-drained but frequently watered
Soil type
  • sandy
  • chalky
  • loams
Sun requirements
  • Full sun
  • Partial shade
  • Exposed
  • Sheltered
Standard category
  • Fruits & nuts
  • Nuts
Grown for
  • Ornamental foliage, catkins and nuts
Creative category
  • Kid Approved
  • Simple food
  • For Beginners
  • Show-offs
  • Outdoor food
  • Neighbour repellant
  • Tough survivors
Garden type
  • Cottage garden
  • Kitchen garden
Garden spaces
  • Specimen
  • Hedges and screens
Gardening expertise
  • beginner
Time to reach full size
  • up to 20 years
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