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Smyrnium perfoliatum

perfoliate alexanders

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An attractive addition to the woodland edge or mixed border, this upright biennial will put on a showy display in late spring and early summer. Its stout stems are clothed in leaves, which are green and feather-like towards the base, but sulphur yellow, and with a simpler shape nearer the top. Its tiny flowers are produced in rounded clusters, which are a similar colour to the uppermost leaves. Smyrnium perfoliatum makes a very handsome foil for rich plums and purples and also looks great when cut and added to a vase.

How to care for Smyrnium perfoliatum:

This wildflower native thrives in the dappled shade of deciduous woodlands, where it finds rich, moist, yet well-drained soil. Despite its preference for shade, it can also tolerate some sunlight. As a biennial, it blooms in its second year, gracing the landscape with delicate flowers from April to May before setting seed and completing its life cycle.

Cut back to just above ground level in autumn. A generous self-seeder if happy in its spot, it will soon form a generous swathe. For this reason, it is currently illegal to plant, or cause it to grow, in the wild. Gardeners possessing them should undertake measures to control them.
Flowering period:
  • Jan
  • Feb
  • Mar
  • Apr
  • May
  • Jun
  • Jul
  • Aug
  • Sep
  • Oct
  • Nov
  • Dec
Eventual height:
0.8m
Eventual spread:
0.4m
Position:

Full sun / light shade

Rate of growth:

Fast-growing

Soil:

Moderately fertile, moist, well-drained soil

Hardiness:

Fully hardy

  • InformationThis perennial dies back to below ground level each year in autumn, then fresh new growth appears again in spring.

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SD30000576
approx 20 seeds
£3.99
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RH30004449
9cm pot
£12.99
available to order from spring
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RH30007714
3 × 9cm pots
was £38.97 now £27.00
available to order from spring
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