Lythrum virgatum 'Rosy Gem'

RHS Plant Profile
wand loosestrife 'Rosy Gem'

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Synonyms

Lythrum salicaria 'RoseyGem'

Plants for pollinators
Herbaceous Perennial
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A clump-forming perennial to 1m tall, with erect, branched stems and slender, linear leaves. From early to late summer it produces bright, rose-pink flowers in slender, upright spikes; these are particularly attractive to pollinating insects

Position

Full sun

Soil Types

Chalk, Clay, Loam, Sand

Max Height

0.5-1 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity
2–5 years
Max Spread
0.1-0.5 metres
Max Height
0.5-1 metres

Growing Conditions

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

Position

Full sun
Aspect
East–facing or South–facing or West–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)
H6

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Lythraceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Clump forming
Genus
Lythrum can be annuals or herbaceous perennials, with simple leaves in opposite pairs and small star-shaped flowers in leafy racemes
Name Status
Accepted

How to Grow

Cultivation

Grow in fertile, moist soil in full sun

Propagation

Propagate by division or basal cuttings in spring

Suggested planting locations and garden types

  • Cottage and informal garden
  • Wildlife gardens
  • Coastal
  • Flower borders and beds

Pruning

Cut back old top growth in spring

Pests

May be susceptible to slugs and snails

Diseases

Generally disease-free