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Herbaceous PerennialHerbs - Culinary

Allium porrum (Autumn Giant 2 Group) 'Porvite'
  • RHS AGM

leek 'Porvite' (Autumn Giant 2 Group)

An excellent variety producing mid-green, erect foliage, and heavy, uniform stems. It stands well in the garden over a long period and shows resistance to bulbiness and bolting

Size
Ultimate height
0.1–0.5 metres
Time to ultimate height
1 year
Ultimate spread
0.1–0.5 metres
Growing conditions
Loam
Sand
Clay
Chalk
Moisture
Well–drained
pH
Neutral, Alkaline
Colour & scent
StemFlowerFoliageFruit
Spring Green
Summer Green
Autumn Green
Winter Green
Position
  • Full sun
Aspect

South–facing or West–facing

Exposure
Sheltered
Hardiness
H4
Botanical details
Family
Amaryllidaceae
Native to the UK
No
Foliage
Deciduous
Habit
Clump forming
Genus

Allium are bulbous herbaceous perennials with a strong onion or garlic scent, linear, strap-shaped or cylindrical basal leaves and star-shaped or bell-shaped flowers in an umbel on a leafless stem

Name status

Unresolved

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How to grow

Cultivation

Grow in fertile, moist but well drained soil in full sun. Start in modules indoors and transplant outdoors later or sow seeds outdoors in March and April then transplant into final position in early summer. See leek cultivation

Propagation

Propagate by seed. See sowing vegetable seeds

Suggested planting locations and garden types
Pruning

No pruning required

Pests

May be susceptible to slugs and snails, leek moth, onion fly and onion thrips leek moth and birds. Protect with fleece or netting to prevent adult moths from laying eggs

Diseases

May be susceptible to onion white rot and leek rust

Get involved

The Royal Horticultural Society is the UK’s leading gardening charity. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place.