Hibiscus Syriacus (common name Rose of Sharon) is one of three types of hibiscus, the others being the hot climate loving Hibiscus Rosa Sinensis (common name Tropical Hibiscus) and hardy perennial hibiscus (or rose mallow) which dies back to the ground each year.
Hibiscus Syriacus is the largest and hardiest of the three and grows happily in the UK in any sunny spot. Hibiscus Syriacus are prolific bloomers and usually begin flowering in August and will continue to brighten up the garden right through to October. These are easy-going, low maintenance plants whose beautiful flowers are irresistible to bees and other pollinators. With their late arrival, the fresh new blooms will delight the bees, keen to try something new as other flowering plants, exhausted from flowering their hearts out through June and July, begin to wan.
Hibiscus Syriacus are deciduous shrubs that tend to get their new leaves rather late in the spring. They reach heights and widths of about 3 metres x 2 metres and can be grown either as a tree or shrub. You can shape Hibiscus as you wish. It can be pruned hard in early spring – which also encourages larger flowers.
Foliage is an attractive dark green and the flowers can be white, pink, lavender and blue, depending on the variety. Plant ideally in full sun as this produces the best blooms. August, while they are in flower, is the perfect time to choose your hibiscus. For tips on planting at this time of the year, read our Tips for Planting in Hot Weather.
Hibiscus Syriacus Oiseau Bleu has an irresistible lilac purple flower and contrasting burgundy heart.
Hibiscus Syriacus Duc De Brabant (Rose Mallow) has deep pink double flowers.
Hibiscus Syriacus Woodbridge has single pink flowers with a deeper pink blotch at its centre.
The very striking Hibiscus Syriacus Monstrosus produces white flowers that have a contrasting maroon centre while white flowering Hibiscus Syriacus Red Heart has a blood red centre. Lots more on Hibiscus the website including Hibiscus Syriacus Ardens for lavender tones.