Pastinaca sativa 'Viper'

RHS Plant Profile
parsnip 'Viper'

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Annual Biennial

An F1 hybrid that produces long, uniform roots with a shallow crown. Capable of growing to a huge size when well grown, so ideal for exhibiting. Sow: March to May, Harvest: September to February

Position

Full sun, Partial shade

Soil Types

Chalk, Clay, Loam, Sand

Max Height

0.1-0.5 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity
1 year
Max Spread
0.1-0.5 metres
Max Height
0.1-0.5 metres

Growing Conditions

Chalk Clay Loam Sand
Moisture
Moist but well–drained
pH
Acid or Neutral

Position

Full sun Partial shade
Aspect
East–facing or South–facing or West–facing
Exposure
Sheltered
Hardiness

Hardiness Ratings

All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets

  • H1A: under glass all year (>15C)
  • H1B: can be grown outside in the summer (10 - 15)
  • H1C: can be grown outside in the summer (5 - 10)
  • H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
  • H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
  • H4: hardy through most of the UK (-10 to -5)
  • H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
  • H6: hardy in all of UK and northern Europe (-20 to -15)
  • H7: hardy in the severest European continental climates (< -20)
H5

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Apiaceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Columnar upright
Potentially harmful
Harmful to skin with sunlight. Wear gloves and other protective equipment when handling Pets (dogs): Harmful to skin with sunlight - see the HTA guide to potentially harmful plants for further information and useful contact numbers
Genus
A small genus of flowering, biennial plants from the carrot family. The cultivated species of parsnip is well-known for its edible, sweet, cream-yellow taproot. Flowers are produced in umbels, carried at the top of upright stems in second year
Name Status
Unresolved

How to Grow

Cultivation

Grow on an open, sunny site with deep, light soil. Keep the soil evenly moist to prevent roots splitting. Add well-rotted manure the previous autumn, especially if growing on a clay or chalk soil. Chalk and clay aren’t ideal for growing parsnips so you could also try deep containers. The ideal soil pH is 6.5-7 so adjust pH where necessary. See parsnip cultivation for more information.

Propagation

Propagate by seed. See sowing vegetable seeds

Suggested planting locations and garden types

  • Cottage and informal garden
  • Wildlife gardens

Pruning

No pruning required

Pests

May be susceptible to carrot fly.

Diseases

May be susceptible to parsnip canker.