Northern starflower
Lysimachia borealis · Primulaceae
The gardener's calendar
Ideal time to plant northern starflower: set it out when the soil is neither frozen nor waterlogged, and water generously as it establishes.
ID card
- Foliage
- Deciduous
- Blooming
- Spring to early summer (May-June)
- Adult size
- 15 to 30 cm in height
- Growth
- Slow to moderate
- Hardiness
- Very hardy (down to -30°C)
- Origin
- Boreal and subarctic regions of the northern hemisphere
- Soil type
- Acidic to neutral, humus-rich, well-drained
- Exposure
- Partial shade to full shade
Care
Watering
Northern starflower prefers moist substrate but never waterlogged. Water regularly during the growing season, especially during dry periods. In winter, reduce watering as the plant enters dormancy. Maintain moderate atmospheric humidity.
Light Exposure
Place the plant in partial shade or under forest cover. It tolerates shaded areas but appreciates soft, indirect light. Avoid direct intense sunlight which can scorch its delicate foliage.
Soil
Prepare a substrate rich in organic matter and acidic, similar to leaf mold or peat. Drainage must be good to prevent root rot. A layer of straw or fallen leaves reproduces its natural forest conditions.
Fertilizer
A light application of balanced fertilizer in spring is sufficient. The plant generally thrives on the organic matter present in enriched soil. Avoid excessive applications which would promote soft growth at the expense of flowering.
Pruning and Cleaning
No real pruning is necessary. Simply remove dead leaves in late winter and spent flowers to encourage better vigor. The plant naturally develops into a compact tuft.
Diseases and Pests
This plant is generally very resistant. Monitor excessive moisture which could promote rot. In poorly drained soil, fungal issues may appear. Good drainage and adequate air circulation are enough to prevent problems.
Did you know?
Northern starflower gets its name "trientale" from its leaves arranged in whorls, evoking a particular geometry. This delicate plant colonizes the boreal forests of North America, Europe, and Asia, where it blooms with tiny white or pale pink flowers, often overlooked by hikers but precious for forest ecosystems.
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.