Common milkwort
Polygala vulgaris · Polygalaceae
The gardener's calendar
Ideal time to plant common milkwort: set it out when the soil is neither frozen nor waterlogged, and water generously as it establishes.
ID card
- Foliage
- Deciduous
- Blooming
- May to July
- Flower color
- Blue, purple, pink or white
- Adult size
- 20 to 40 cm in height
- Growth
- Moderate
- Hardiness
- Very hardy (down to -15°C)
- Origin
- Temperate Europe and Asia
- Soil type
- Well-draining, alkaline or neutral
Care
Watering
Water regularly during the spring and summer growing period, making sure the soil doesn't get waterlogged. In winter, reduce watering to a minimum since the plant goes dormant. Prefer moderate watering rather than excessive to avoid root rot.
Light exposure
Place your milkwort in full sun or partial shade to encourage generous blooming. A sunny exposure strengthens the flower color and plant vigor. Avoid areas that are too shady, as this would reduce flowering.
Pruning
Prune lightly after flowering to maintain a compact shape and encourage branching. Remove dead or damaged stems in late winter. Moderate pruning is sufficient; this plant tolerates it well and regrows easily.
Soil and drainage
Milkwort prefers well-draining, light, alkaline or neutral soil. Enrich the soil with compost or potting mix when planting to promote establishment. Optimal drainage prevents root suffocation, particularly important in humid areas.
Fertilizing
Apply balanced fertilizer in spring when growth begins. A single application is generally sufficient for the season. Avoid excess nitrogen, which would promote foliage at the expense of flowering.
Diseases and pests
Milkwort is not very prone to diseases under good growing conditions. In poorly drained soil, root rot may appear. Occasionally watch for aphids in spring and treat if necessary with a water spray or gentle methods.
Did you know?
Milkwort was used in traditional European medicine for its supposed respiratory benefits: its name literally means 'much milk' in ancient Greek, as the plant was reputed to increase milk production. Today, it's primarily a charming little flower of chalky meadows that attracts pollinators and brightens rock gardens and garden borders.
Where to buy it
Plant in spring or early autumn, avoiding spells of intense heat. Pick a plant with healthy foliage and roots that are not exposed. Best time: March, April, May, September.
Add this plant to my garden →Plants from the same family
- Polygala serpyllifoliaPolygala serpyllifolia
- Polygaloides chamaebuxusPolygaloides chamaebuxus
- Tufted milkwortPolygala comosa
- Polygala amarellaPolygala amarella
- Chalk milkwortPolygala calcarea
- Myrtle-leaved milkwortPolygala myrtifolia
Tips generated and checked by Viridia — adapt them to your local climate.