Arisaema dilatatum

Cobra lily, Jack-in-the-pulpit


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Excellent Chinese species which has grown and multiplied in our garden for 15 years. Broad trifoliate leaves with flowers sporting a swollen yellow spadix held below the foliage. Once pollinated, the stem bearing the fruiting head elongates until the red fruit is held well above the leaves. In Sichuan, we saw this flowering amidst carpets of Corydalis flexuosa in bloom - no wonder their spadices were dilated! Nice 1" or so seed-grown bulbs that are not flowering size but will get you started. This will also increase by offsets.


Plant Type

  • Perennial / Bulb

Mature Size


Hardiness Zones

  • Zone 6a (-10 °F)
  • Zone 6b (-5 °F)
  • Zone 7a (0 °F)
  • Zone 7b (5 °F)
  • Zone 8a (10 °F)
  • Zone 8b (15 °F)
  • Zone 9a (20 °F)
  • Zone 9b (25 °F)

Sun Exposure

  • Shade
  • Part Shade - Part Sun

Water Needs

  • Moist

Bloom Time

  • Spring
  • Summer
  • Deer Resistant Plants