Common brighteyes
Reichardia picroides · Asteraceae
The gardener's calendar
Ideal time to plant common brighteyes: set it out when the soil is neither frozen nor waterlogged, and water generously as it establishes.
ID card
- Family
- Asteraceae
- Type
- Annual or biennial herbaceous plant
- Foliage
- Deciduous
- Flowering
- Spring to early summer (April-June)
- Mature size
- 30 to 60 cm in height
- Growth
- Fast
- Hardiness
- Moderate, prefers temperate to warm climates
- Origin
- Mediterranean and Atlantic regions of Europe
Care
Light exposure
Cousteline appreciates sunny situations, or even partial shade in very hot regions. A minimum of 5 to 6 hours of direct sunlight promotes beautiful flowering. It tolerates lower light conditions but will be less vigorous.
Soil
This plant adapts to most soils, provided they are well-drained. It appreciates poor to average soils and even tolerates chalky soils. Avoid stagnant moisture which would promote root rot.
Watering
Water moderately during the growth and flowering phases, letting the soil dry out slightly between waterings. Once established, Cousteline is fairly tolerant of drought. Reduce watering in winter.
Fertilizer
An application of balanced or low-nitrogen fertilizer in early spring is usually sufficient. Over-fertilized plants tend to develop more foliage at the expense of flowering.
Pruning and deadheading
Regularly remove spent flowers to extend flowering and prevent excessive self-seeding. Light pinching in spring can encourage a fuller, more compact form.
Diseases and pests
Cousteline is generally hardy. Watch for powdery mildew in conditions of stagnant humidity and ensure good air circulation around the foliage. Slugs and snails may be interested in young shoots, particularly in spring.
Did you know?
Cousteline takes its common name from the Occitan term « coustel » meaning knife, referring to the sharp shape of its elongated leaves. Once used in traditional southern herbalism for its supposed tonic properties, this discreet plant remains today appreciated by Mediterranean gardeners for its robustness and rustic appearance.
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
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- SneezewortAchillea ptarmica
- Canadian goldenrodSolidago canadensis
- WormwoodArtemisia absinthium
Tips generated and checked by Viridia — adapt them to your local climate.