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Allium /ˈæliəm/

Common name: Chives

Allium A large genus of several hundred bulbous herbs in the amaryllis family, native mostly to the Northern Hemisphere and recognized by their oniony scent, hollow or strap-like leaves, and globe-shaped flower heads. The genus includes many kitchen staples such as onion, garlic, and chives, as well as ornamental species grown for their purple summer globes. Most alliums want full sun and well-drained soil, and many are very easy to grow in pots or beds.

Care summary

Sun Full sun, 6+ hours daily
Water Even moisture early; reduce as bulbs mature
Soil Loose, fertile, well-draining, pH 6.0–7.0
Hardiness
Mature height
Pet safe

Fun facts

  • Cutting onions releases syn-propanethial-S-oxide, the volatile compound that makes your eyes water.
  • Ancient Egyptian workers building the pyramids were reportedly fed onions for strength and endurance.
  • Onion varieties are classified as short-day, intermediate-day, or long-day based on how much daylight triggers bulbing.
  • All onions are toxic to cats and dogs, damaging their red blood cells even in modest amounts.

Common problems

    • Cover beds with fine insect mesh
    • Rotate allium crops every year
    • Remove and destroy infested bulbs
    • Pull up and bin infected plants
    • Avoid alliums on that ground
    • Do not compost diseased bulbs
    • Space plants for good airflow
    • Water at the base only
    • Remove infected leaves promptly
    • Spray plants with insecticidal soap
    • Keep beds free of weeds
    • Water during dry spells