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How to Grow Asparagus

Index

  • Sowing Instructions
  • How to Transplant
  • Crop Maintenance
  • How to Harvest
  • Storage

Sowing Instructions

  • Sowing time: Sow in early spring
  • Sowing location: Indoors
  • Sow in seed trays or pots
  • If using a 24 cell seed tray sow one seed per cell
  • If using 9cm pots sow 3 seeds per pot
  • Asparagus needs 20°C to germinate
  • Before you sow your asparagus seed, soak them in warm water for 24 hours
  • Lightly cover seeds with compost, press down compost & soak

How to Transplant

  • Transplant outdoors after 3 or 4 months
  • Soil: Asparagus likes light, free draining soil, free of perennial weeds
  • Ground preparation is done the previous autumn, adding well rotted farm yard manure
  • If your soil is a heavy clay, grow asparagus in raised beds
  • Asparagus is a perennial and will stay in the ground for many years - choose location carefully

Crop Maintenance

  • Keep soil weed free at all times
  • Keep the rows weed free and well watered
  • Pests & Diseases
    • Slugs and snails - Can damage young developing spears, reducing crops and weakening plants
    • Asparagus beetles - spray with bifenthrin to control

Harvesting

  • Allow plants to develop for first two years before harvesting
  • Cut down spears in autumn of first year and mulch up around each plant
  • Recommended that you leave harvesting until the third year, allowing plant develop a good root network
  • Water well the week before harvest
  • Harvest from May to mid June by removing spears with a sharp knife at ground level
  • Harvest once spears are 15cm long

Storage

  • Can be placed in the fridge for short term storage
  • For longer term storage asparagus can be frozen, but not recommended
  • Eat crops soon after harvest