Artemisia maritima

RHS Plant Profile
sea wormwood

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sea wormwood visionspictures.com

Other common names

garden cypress, sea artemisia, wormseed

Synonyms

Seriphidium maritimum

Shrubs

A subshrub with aromatic, deciduous feathery leaves reaching 60cm. The leaves are covered in hairs giving a soft silvery appearance and smell pleasantly medicinal. Flowers are spikes of small yellow-brown clusters developing in summer

Position

Full sun

Soil Types

Chalk, Loam, Sand

Max Height

0.5-1 metres

Max Spread

0.5-1 metres

Size

Time to Maturity
2–5 years
Max Spread
0.5-1 metres
Max Height
0.5-1 metres

Growing Conditions

Chalk Loam Sand
Moisture
Well–drained
pH
Acid or Alkaline or Neutral

Position

Full sun
Aspect
East–facing or North–facing or South–facing or West–facing
Exposure
Exposed or Sheltered
Hardiness

Hardiness Ratings

All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets

  • H1A: under glass all year (>15C)
  • H1B: can be grown outside in the summer (10 - 15)
  • H1C: can be grown outside in the summer (5 - 10)
  • H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
  • H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
  • H4: hardy through most of the UK (-10 to -5)
  • H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
  • H6: hardy in all of UK and northern Europe (-20 to -15)
  • H7: hardy in the severest European continental climates (< -20)
H6
Drought Resistance
Yes

Colour & Scent

Fragrance Foliage
Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Asteraceae
Native to GB/Ireland
Yes
Foliage
Deciduous
Habit
Bushy
Genus
Artemisia can be shrubs, perennials or annuals, evergreen or deciduous, with usually grey, aromatic, often divided foliage and rather insignificant flower-heads
Name Status
Correct
Plant Range
Eurasia

How to Grow

Cultivation

Grow in full sun on well-drained soil

Propagation

Propagate from seed or softwood cuttings

Suggested planting locations and garden types

  • Coastal
  • Cottage and informal garden
  • Mediterranean climate plants

Pruning

Prune in spring to keep bushy

Pests

Generally pest-free

Diseases

Generally disease-free