Dotted loosestrife
Lysimachia punctata · Primulaceae
📷 sarefo · CC BY-SA 3.0
The gardener's calendar
Ideal time to plant dotted loosestrife: set it out when the soil is neither frozen nor waterlogged, and water generously as it establishes.
ID card
- Foliage
- Deciduous
- Flowering
- June to August, yellow flowers in spikes
- Mature size
- 60 cm in height
- Growth
- Fast
- Hardiness
- Very hardy (down to -15°C)
- Origin
- Eastern Europe and Asia Minor
- Soil type
- Humus-rich, well-drained, tolerates moisture
✓ Taxonomy verifiedSource: AI estimate · hardiness: reliability high.
Expert tips
The key tip
Lysimachia punctata is easy-going but tends to spread: plant it in rich, moist soil where it can't overwhelm its neighbours. Cut it back hard after flowering to prevent excessive self-seeding.
The common mistake
Leaving it to self-seed unchecked: after 2-3 years, it's colonized half the border and smothered other plants.
The pro's trick
Pinch back stems in early June to encourage branching and get more flowers over a longer period—you'll gain 3-4 extra weeks of blooms.
Seasonal watch
In damp autumn weather, watch for white powdery mildew on the leaves: good air circulation and partial shade are enough to prevent it.
Care
Watering
Dotted Loosestrife enjoys moist to wet soil. Water regularly during the growing season, especially during prolonged dry spells. Avoid letting the substrate dry out completely. Consistent moisture promotes beautiful flowering.
Exposure
This plant thrives in partial shade to semi-shade. It tolerates direct sun in temperate regions, but in warm climates, light shade will help it retain its foliage. Avoid overly hot afternoon exposures.
Pruning and maintenance
Light pruning after flowering (August-September) encourages a compact, bushy shape. Remove faded flower spikes to encourage new blooms. Spring cutback is possible to control its spread.
Fertilizer
Apply balanced fertilizer in spring or early growing season. A single application is usually sufficient for the year. Excessive feeding risks promoting foliage at the expense of flowers.
Soil
Rich, humus-based, well-structured soil works perfectly. Dotted Loosestrife tolerates slightly moist or even marshy soil. Amend with compost or potting mix at planting to optimize water retention.
Diseases and pests
This species is generally very hardy and rarely affected by serious diseases. Watch for excessive moisture that could promote root rot. Good drainage and air circulation prevent most problems.
Did you know?
Dotted Loosestrife owes its name to the genus 'Lysimachia', which comes from a Greek legend: a Macedonian king supposedly discovered that this plant calmed conflicts between animals. Its bright yellow flowers in upright spikes made it highly prized in English cottage gardens of the 19th century, where it symbolized joy and prosperity.
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
- African BoxwoodMyrsine africana
- Eastern sowbreadCyclamen coum
- SowbreadCyclamen hederifolium
- Yellow loosestrifeLysimachia vulgaris
- CowslipPrimula veris
- Scarlet pimpernelLysimachia arvensis
Tips generated and checked by Viridia — adapt them to your local climate.