Jacobaea aquatica
Jacobaea aquatica · Asteraceae
The gardener's calendar
Ideal time to plant jacobaea aquatica: set it out when the soil is neither frozen nor waterlogged, and water generously as it establishes.
ID card
- Foliage
- Deciduous
- Flowering
- June to September
- Adult size
- 24 to 40 inches tall
- Growth
- Fast
- Hardiness
- Low hardiness (32 to 41 °F)
- Origin
- Central and southern Europe
- Soil type
- Moist to very moist
Care
Regular and generous watering
Jacobaea aquatica demands constantly moist to wet soil: it's a hygrophilic plant. Water regularly during the growing period, never allowing the substrate to dry out. In pots, maintain high humidity and consider a permanent water saucer.
Light and exposure
Place this plant in semi-shaded to sunny conditions depending on your climate. It tolerates partial shade but prefers good light for abundant flowering. Protect it from drying winds.
Removal of dead parts
Remove faded flowers throughout the season to encourage continuous blooming. At the end of winter or in spring, cut back dried stems at the base to promote new growth.
Rich and humus-bearing soil
Choose a light substrate enriched with organic matter (potting mix, compost) that retains moisture. Overly compact or poorly draining soil can, however, promote rot: balance water retention with slight aeration.
Moderate nutrition
Apply a balanced fertilizer or one slightly rich in potassium once or twice a month during growth and flowering (May to September). Reduce applications in winter or dormancy periods.
Prevention of fungal diseases
High humidity can encourage powdery mildew or rot if ventilation is insufficient. Air regularly and avoid misting foliage late in the afternoon. Quickly remove any affected foliage.
Did you know?
Jacobaea aquatica, formerly classified in the Senecio genus, is a wetland plant that has adapted to Europe's marshy zones. Its bright yellow flowers attract pollinators and it has long been used in water gardens and marshes for its ornamental qualities and its remarkable ability to grow in waterlogged conditions that are difficult for most plants.
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.
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Tips generated and checked by Viridia — adapt them to your local climate.