Heliotropium arborescens 'Marine'

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heliotrope 'Marine'

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heliotrope 'Marine' RHS

Synonyms

Heliotropium 'Marine'

Plants for pollinators
Bedding Shrubs Conservatory Greenhouse
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'Marine' is a compact cultivar, usually grown as annual bedding, growing to about 45cm tall, with scented, deep violet-blue flowers

Position

Full sun, Partial shade

Soil Types

Loam, Sand

Max Height

0.1-0.5 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity
2–5 years
Max Spread
0.1-0.5 metres
Max Height
0.1-0.5 metres

Growing Conditions

Loam Sand
Moisture
Moist but well–drained
pH
Acid or Alkaline or Neutral

Position

Full sun Partial shade
Aspect
West–facing or East–facing or South–facing
Exposure
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)
H1C

Colour & Scent

Fragrance Flower
Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Boraginaceae
Native to GB/Ireland
No
Foliage
Evergreen
Habit
Bushy
Potentially harmful
Pets: Harmful if eaten repeatedly. For further information and contact numbers regarding pets, see the HTA guide to potentially harmful plants
Genus
Heliotropium can be annuals, perennials, sub-shrubs or shrubs, with simple leaves and large clusters of small, scented flowers in summer
Name Status
Accepted

How to Grow

Cultivation

Under glass, grow in peat-free compost in full light but with some protection from hot sun. Outdoors grow in any moist but well-drained soil in full sun. Water moderately in the growing season and apply a balanced fertiliser once a month. In the winter keep the rootball just moist

Propagation

Propagate cultivars by taking softwood cuttings or semi-ripe cuttings in summer

Suggested planting locations and garden types

  • Cottage and informal garden
  • City and courtyard gardens
  • Patio and container plants
  • Wildlife gardens
  • Coastal
  • Sub-tropical
  • Flower borders and beds
  • Conservatory and greenhouse

Pruning

Tip-prune shoots on young plants in early spring to promote bushy growth. Older leggy plants can gave their stems shortened by half in spring

Pests

Glasshouse whitefly may be a problem if grown under glass

Diseases

Generally problem free