Hibiscus 'Hamabo' (Hibiscus syriacus) - flowering shrub - 17 cm pot - Height 45 cm

Yes, the Hibiscus syriacus Hamabo is fully hardy throughout France, including regions with harsh winters. It can withstand temperatures down to -15°C without any special protection once it is well established in the ground. The only thing to bear in mind is that it breaks dormancy very late, often in May: the plant may appear dead in March or April when it is perfectly alive and building up its reserves. A quick scratch of the bark will then reveal green underneath the surface. During the first year, a light mulch around the base protects the crown in the coldest areas of the northeast.

L'Hibiscus syriacus Hamabo is 'one of the latest and longest-flowering shrubs in our temperate gardens. It comes into bloom in July, sometimes as early as late June in southern regions, and continues to produce new flowers until'the first frosts of'autumn, usually in October or November. Each individual flower lasts only'a day, but the plant produces them continuously throughout this period, ensuring an uninterrupted display for three to four months.

L'Hibiscus syriacus Hamabo is a nectar-producing plant highly prized by pollinating insects. Its large, open flowers, with highly accessible stamens, attract large numbers of honeybees and wild bees, bumblebees, as well as many species of butterflies active during the day. Its prolonged flowering from July to October coincides with a period when nectar sources become scarcer in gardens, making it a valuable resource for beneficial wildlife. Planting a Hamabo Hibiscus, t'herefore, is also a way to actively contribute to local biodiversity, while enjoying a'generous floral display.

Hibiscus syriacus Hamabo absolutely requires full sun, ideally at least six hours of direct sunlight per day. A warm exposure, against a south-facing wall or in a sheltered corner, is optimal: the accumulated heat stimulates flowering and brings forward bud break in spring. In partial shade, the plant survives but produces far fewer flowers and can become susceptible to fungal diseases due to insufficient ventilation and warmth. Avoid damp, shaded garden corners, as well as windy corridors that dry out and weaken new shoots.

'Hibiscus syriacus Hamabo adapts to a wide variety of soils, provided they are well-drained. It prefers light to medium, slightly acidic to neutral soils (pH 6 to 7.5), rich in organic matter. Heavy, clayey soils that are waterlogged in winter should be absolutely avoided: the roots cannot tolerate prolonged asphyxiation and root rot is a constant threat. If your soil is compact, loosen it with coarse sand and compost before planting. Hamabo hibiscus tolerates moderately alkaline calcareous soils well, unlike many other flowering shrubs.

The pruning of l'Hibiscus syriacus Hamabo is carried out in late w'inter, ideally between mid-February and late March, just before the plant breaks dormancy. Shorten the previous year's shoots by cutting them two or three buds from their base, or about half their length. This short pruning is the key to d'dense flowering: it stimulates the'growth of many vigorous new shoots, each bearing multiple flower buds. Avoid pruning in l'autumn or summer, as the young, unhardened shoots would be exposed to winter frost.

Yes, H'ibiscus syriacus Hamabo grows very well in a pot on a sunny terrace or balcony, provided you follow a few rules. Choose a container at 'least 30 to 40 cm in diameter with effective drainage holes, and use a quality potting mix enriched with compost. In a pot, watering must be more frequent than 'in the ground, especially in midsummer: check the 'moisture of the substrate two to three times a week during heatwaves. An ap'ply of fertilizer for flowering plants, from May to August, will stimulate flower production.