Lysimachia thyrsiflora
Lysimachia thyrsiflora · Primulaceae
The gardener's calendar
Ideal time to plant lysimachia thyrsiflora: set it out when the soil is neither frozen nor waterlogged, and water generously as it establishes.
ID card
- Foliage
- Deciduous
- Flowering
- May to July
- Adult size
- 24 to 35 inches tall
- Growth
- Fast
- Hardiness
- Very hardy (-4°F)
- Origin
- Northern Europe and temperate Asia
- Soil type
- Moist to swampy
- Exposure
- Full sun to partial shade
Care
Watering
Tufted loosestrife loves constantly moist to wet soil. Keep your substrate moist throughout the year, especially during the growing season. In a pot, water regularly without allowing water to stagnate, unless you have a permanent drainage saucer.
Light and Exposure
This plant thrives in full sun or partial shade. It tolerates light shade but flowers more abundantly with at least 4 to 5 hours of direct sunlight daily. In very hot climates, afternoon partial shade protects it from excessive drying.
Soil and Planting
Choose soil rich in organic matter, acidic to neutral, and above all very moist. Work in compost or peat at planting time. This species flourishes at the water's edge, in wet areas, or in an elevated pot with permanent water reserves.
Pruning and Maintenance
Cut back the plant in late winter or early spring before growth resumes. Remove dead and damaged stems. Light pruning during the growing season encourages a bushier form and better branching.
Fertilizing
Enrich the soil with well-decomposed compost each spring. A balanced, diluted fertilizer can be applied monthly during the growing season if your potted plant is in poor soil.
Pests and Diseases
Generally robust, tufted loosestrife mainly fears stagnant excessive moisture which can promote root rot or leaf mold. Ensure good air circulation and thin out the foliage if it becomes dense.
Did you know?
Tufted loosestrife gets its name from the dense, upright clusters of its tiny yellow flowers, resembling an ancient 'thyrsus'. Historically, the Lysimachia genus was associated with the Greek legend of a warrior king pacified by these plants. In Asia, it has long been used in traditional herbal medicine for its supposed relaxing properties.
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
- Dotted loosestrifeLysimachia punctata
- African BoxwoodMyrsine africana
- Eastern sowbreadCyclamen coum
- SowbreadCyclamen hederifolium
- Yellow loosestrifeLysimachia vulgaris
- CowslipPrimula veris
Tips generated and checked by Viridia — adapt them to your local climate.