Polygala vulgaris

RHS Plant Profile
common milkwort

Other common names

cross flower, gand flower, gang flower, gay wings, procession flower, Rogation flower, llysiau crist

Herbaceous Perennial

A widespread native wildflower with rather sprawly, woody-based stems up to 20cm, bearing very small, oval, evergreen leaves and sprays of small flowers that are usually blue but can be purple, pink or white. A food plant for the dark green Fritillary butterfly as well as supplying pollen and nectar

Position

Full sun, Partial shade

Soil Types

Chalk, Loam, Sand

Size

Time to Maturity
2–5 years

Growing Conditions

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

Position

Full sun Partial shade
Aspect
East–facing or South–facing or West–facing
Exposure
Exposed or Sheltered
Hardiness
H5
Drought Resistance
Yes

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Polygalaceae
Native to GB/Ireland
Yes
Foliage
Evergreen
Habit
Trailing
Genus
Polygala can be annuals, evergreen perennials or shrubs, with simple leaves and racemes of somewhat pea-shaped flowers
Name Status
Correct

How to Grow

Cultivation

Occurs naturally in short grassland, and on heaths and dunes, preferring well-drained soil in a sunny position

Propagation

Propagate by seed or by division

Suggested planting locations and garden types

  • Cottage and informal garden
  • Rock garden
  • Wildlife gardens
  • Banks and slopes

Pruning

No pruning required

Pests

Generally pesr-free

Diseases

Generally disease-free