The Botanical Diary
S
Shrubs

Syrian Hibiscus

Hibiscus syriacus
Also known asrose of Sharon, shrub althea

The national flower of South Korea, known as Mugunghwa (hibiscus)

Regions
Centre, South, West
Colour
pink, white, ліловий, двокольоровий
Syrian Hibiscus (rose of Sharon, shrub althea)
🌸
Bloom
July–October
☀️
Light
Full sun
💧
Watering
Moderate
📏
Height
2–3 m
❄️
Hardiness
Zone 5b

The Rose of Sharon, or Syrian Hibiscus, is a charming shrub that has graced gardens for centuries. It originates from the warm regions of Asia but has long won the hearts of gardeners worldwide with its undemanding nature and generous flowering. In July, when most spring blooms have already faded, this hibiscus begins its true show, producing pink, white, lilac, and bicoloured flowers right up until the first frosts.

This is a true queen of the summer garden—the elegant flowers with their feathery stamens and incomparable grace await you each morning. Plant breeders have developed dozens of varieties, from simple single blooms to fully double forms, from solid colours to striking colour combinations. Some cultivars can truly be regarded as natural sculptures, so exquisite are their forms. In a sunny location, the shrub transforms into a cloud of flowers, and its natural grace makes it indispensable in landscape design.

In the garden, the Rose of Sharon finds its rightful place alongside butterfly bush, lavatera, or roses—these plants complement one another beautifully in colour and structure. It looks equally splendid in graceful compositions of Western European-style gardens and in traditional Ukrainian settings, where it has been cherished for generations. The shrub will cope with less than ideal conditions, content with moderate watering and a sunny spot.

Interestingly, in South Korea this hibiscus is regarded as the national flower and is called Mugunghwa. For the Ukrainian gardener, this is wonderful news—a plant that connects us with distant cultures, takes up little space, yet offers a wealth of joy and colour from summer until autumn.

Location & soil

Syrian Hibiscus — planting & location

LightFull sun
Soil typeСуглинок, рН 6–7,5
Planting timeApril або October
Plant spacing1,5–2 m
Planting depthAt root collar level

Flowers from summer until frost

Water needs

How to water Syrian Hibiscus

IntensityModerate
FrequencyEvery 7 days (в)
Volume12–15
MethodAt the base

Avoid waterlogging

Annual care

Fertilizing and pruning: Syrian Hibiscus

Spring fertilizingNitrogen (April)
Summer fertilizingPhosphorus and potassium (August)
Autumn fertilizingNo feeding required
Pruning timeApril (до набухання бруньок)
Pruning typeShaping

Cut back by one-third to stimulate flowering

Cold hardiness

Syrian Hibiscus — winter hardiness & care

Hardiness zoneZone 5b
Winter coverHorticultural fleece plus peat mulch 15 cm deep
Cover timingNovember
Plant protection

Diseases and pests of Syrian Hibiscus

Diseases
Chlorosisвертіцільоз
Pests
AphidWhitefly
Garden design

What grows well with Syrian Hibiscus?

Буддлея, лаватера, рожа