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The Plant Guide

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Perfoliate Alexanders

Smyrnium perfoliatum

This spring bloomer produces bright chartreuse floral domes atop bract-like, rounded leaves that are pierced by the flower’s stem. This plant’s form and color contrast well with spring bulbs. It grows 3 feet tall and 2 feet wide. Let it regenerate itself by self-sowing. It is a biennial or short-lived perennial that makes an excellent cut flower and produces worthy combinations with neighboring shades of maroons and blues. Grow it in large, mixed borders, naturalistic plantings, and open woodlands.

CareProvide moist but well-drained soil in full sun to partial shade.

PropagationSow seed in a cold frame in late winter or direct-sow in fall or early spring. (Seeds need a cold treatment to promote germination.)


  • Genus : Smyrnium
  • Plant Height : 1 to 3 feet
  • Plant Width : 1 to 3 feet
  • Zones : 10, 6, 7, 8, 9
  • Light : Full Sun to Partial Shade
  • Moisture : Medium Moisture
  • Growth Rate : Moderate
  • Maintenance : Moderate
  • Plant Type : Perennials
  • Foliage Color : Purple/Burgundy
  • Characteristics : Self Seeds, Showy Foliage, Showy Seed Heads
  • Bloom Time : Spring
  • Plant Seasonal Interest : Spring Interest

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