Hibiscus syriacus 'Gandini Santiago' FLOWER TOWER PURPLE (syn. PURPLE PILLAR)

Hibiscus syriacus 'Gandini Santiago'
Hibiscus syriacus 'Gandini Santiago' FLOWER TOWER PURPLE (syn. PURPLE PILLAR)
SIZE/TYPE medium-sized shrub
 taller shrub
LEAVES deciduous broadleaf
COLOUR OF FLOWERS combined:lilac and deep red
BLOOMING TIME July - September
LOCATION full sun
SOIL TYPE any (acidic to alkaline)
SOIL MOISTURE REQUIREMENTS evenly moist (dislikes drought)
USDA zone (lowest) 5   (down to -29°C)
FOR ZONE 5+6 Code of winter protection zone 5+6
FOR ZONE 7 Code of winter protection zone 7
BELONGS TO CATEGORIES Deciduous broadleaf
Summer blooms
Hedging plants
náhled fotonáhled fotonáhled foto
Rose-of-Sharon deserves more attention for its abundant flowering in summer. These maintenance-free shrubs come from eastern Asia and are the inevitable ingredient of every summer garden which they highlight with a wide range of coloured flowers. There has been a number of cultivars available since its discovery. They have various bloom colours, shapes and sizes, as well as variegated leaves.

The columnar-growing rRose-of-Sharon originated from unnamed seedlings at the Italian nursery Gandini, where the owner showed them to Maria and Adrienne van Aart of the Dutch nursery Van Aart Boomkwekerijen in 2013. They agreed to take some plants back to Holland for further examination and propagation. After two years they selected 15 plants which gave rise to 3 beautiful varieties and later on a new series was created for them: FLOWER TOWER. FLOWER TOWER PURPLE is the very first of them which was selected by the Italian nursery owner Francesco Gandini yet before the Dutch visit, and initially sold named as ‚Gandini Santiago‘ PURPLE PILLAR. It was granted EU patent No. 38302 in 2014.

FLOWER TOWER PURPLE is an upright and slender growing variety of rose-of-Sharon with large, single flowers with a few toussled sepals in the centre. They are lilac-pink with a large maroon eye which takes up more than 50% of the flower surface, producing numerous rays across the petals towards the margins. Their diameter is 8-10 cm and they come out from mid-July until September if the bush is strong enough. Their quantity and size is directly proportional to the age and strength of the plant. They come out reliably every year in July and don’t stop blooming until all buds have gone - sometimes by end September.

It has very decorative leaves that are unique. They are shallowly lobed, palmate, mid to dark green and coarsely toothed. If they turn yellow in summer the plant manifests too much water at the roots. They are either over-watered or planted in too heavy soil where it has not established yet.

Pruning is an issue that always gets me started here. Hard pruning leads to larger flowers, that's true, but also production of long, immature, flexible twigs. The only cut I recommend is such that rejuvenates old plans – prune it hard in early spring by 50-75 % and let it grow for another 10 years or so. Slender and columnar habit of the FLOWER TOWER hibiscus makes it ideal for flowering hedges.

Rose-of-Sharon is quite adaptable of soil type. It can take drought but does not look good if dry for too long. It loves moisture fully established plants thrive on occasional flooding in summer, but you cannot transplant it into standing water. Old plants dislike peat. Selective fertilizers enhancing flowering are convenient but not crucial. Place it in full sun only. Fully hardy to min. -27 °C (USDA zone 5) and not suitable for pots.

Last update 04-04-2023
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Hibiscus syriacus 'Gandini Santiago' FLOWER TOWER PURPLE (syn. PURPLE PILLAR) height 100-125 cm, width 20-30 cm
Hibiscus syriacus 'Gandini Santiago' FLOWER TOWER PURPLE (syn. PURPLE PILLAR) height 125-150 cm

THE PRICES INCLUDE VAT of 15%. For quick conversion you can use 1 CZK = approx. 0.04 EUR


Hibiscus syriacus
Hibiscus syriacus
  • STANDARD QUALITY - Plants of this group are 1st class quality with number of branches and overall density adequate to their size and age, considering they were container grown.
  • DE LUXE QUALITY - This label guarantees a luxurious quality of manually selected plants that, compared to their height and age, are exceptionally dense and beautiful.
  • EXTRA - These plants are usually mature and bigger specimens with exceptional overall appearance.
  • STANDARD (as described in the plant form) means a tree with a trunk of 190-210 cm and a crown at the top, unless specified differently. The commercial size for trees is their girth measured in the height of 1m from ground.
  • HOBBY - These plants are of the same quality as our standard-quality plants but younger and therefore cheaper.
  • SHRUB - a woody plant with branches growing bushy from the ground level.
  • HALF-STANDARD or MINI-STANDARD - a small tree with shorter trunk, its size is usually specified.
  • FEATHERED - These are trees with branches growing already from the base of the trunk and up along the stem.
  • GRASSES and PERENNIALS - Sizes given usually read the diameter of the pot or the clump, as specified.
LARGE PLANTS over 150 cmspecimens, screening and hedging shrubs

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