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Annual BiennialHerbs - Culinary

Anethum graveolens 'Mammoth'
  • RHS Plants for pollinators

dill 'Mammoth'

A vigorous upright annual or biennial with finely dissected, aromatic blue-green leaves, and large flat umbels of tiny yellow flowers in summer. This is a popular and slightly larger robust variety. Grown popularly each year as an annual for fresh leaves and used as a herb in cooking - particulalry fish eggs and potatoes, and also grown as a cut flower and for cut scented foliage. Dill will often flower and go to seed in its second year. The leaves, the flowers and the aromatic seeds are all edible. Dill seeds are important culinary additions, and their flavour can provide a more subdued flavour. Dill seed is used in pickling, and features in vinaigrettes and marinades.

Size
Ultimate height
1–1.5 metres
Time to ultimate height
1–2 years
Ultimate spread
0.5–1 metres
Growing conditions
Chalk
Loam
Sand
Moisture
Well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Green Yellow Green
Summer Green Yellow Green
Autumn Green Yellow
Winter
Position
  • Full sun
Aspect

East–facing or South–facing or West–facing

Exposure
Exposed or Sheltered
Hardiness
H4
Botanical details
Family
Apiaceae
Native to the UK
No
Foliage
Deciduous
Habit
Columnar upright, Bushy
Genus

Anethum can be annuals or biennials, scented of aniseed, with leaves finely divided into linear segments, and umbels of small yellow flowers in summer

Name status

Unresolved

How to grow

Cultivation

Grow in fertile, well-drained soil in full sun. Sow direct in 1cm deep rows and lightly cover with soil, thin to 15cm apart when large enough to handle. The roots don't like disturbance so don't transplant. See cultivating herbs.

Propagation

Propagate by seed.

Suggested planting locations and garden types
  • Cottage and informal garden
  • Wildlife gardens
  • Gravel garden
  • Cut flowers
  • Wall side borders
Pruning

Deadhead to prevent self-seeding.

Pests

Generally pest-free

Diseases

Generally disease-free.

Get involved

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