True chiffon texture
Petaloid stamens fill the centre without hiding the flower’s elegant funnel.
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Family: Malvaceae · Pot: 19 cm · Height: 55 cm

Hibiscus syriacus ‘Notwoodtwo’ White Chiffon® illuminates the late garden with flowers that appear carved from white silk. Five broad outer petals frame a softly filled centre of smaller petaloid organs, adding depth without weighing down the corolla. Against the upright green crown, the white remains visible at distance and becomes especially atmospheric in gentle evening light.
As a vertical accent in a sunny border, flowering hedge or large container, it supplies height without dense evergreen weight. Late bloom links summer with autumn and creates a second peak among ornamental grasses and long-season perennials.
RHS Award of Garden Merit — a current official distinction for ‘Notwoodtwo’ WHITE CHIFFON®.
Three distinct details explain the horticultural value of White Chiffon®.
Petaloid stamens fill the centre without hiding the flower’s elegant funnel.
New growth continues setting buds after many spring shrubs have finished.
Its vase-shaped crown supplies vertical structure while leaving room for lower planting at the base.
Why you will love it: Semi-double white flowers illuminate the late border like small fabric rosettes on an upright crown.
Use at the rear of a sunny border against dark foliage or a warm wall so the semi-double white flowers glow in evening light; do not compress the mature crown between evergreen masses.
Salvia yangii, Miscanthus sinensis ‘Morning Light’ and Echinacea ‘Magnus’ share bright freely drained soil; silver texture and rosy discs make the clean white flowers readable at distance.
Full sun for dense growth and plentiful buds; morning sun is useful in extreme heat.
Provide moderate but deep water once established. Avoid both chronic drought and heavy saturated soil.
Hardy to roughly −20 °C or below depending on site and clone; late spring emergence is entirely normal.
An ornamental cultivar, not intended for consumption.
Full sun for dense growth and plentiful buds; morning sun is useful in extreme heat.
Provide moderate but deep water once established. Avoid both chronic drought and heavy saturated soil.
Fertile, well-drained soil from slightly acid to alkaline. A warm sheltered site ripens the wood more effectively.
Apply compost and a balanced feed as new growth starts; avoid excess nitrogen that produces length rather than flowers.
It flowers on new growth. In late winter thin weak stems and shorten the framework to improve branching.
It loses its leaves and remains woody. Do not assume the bare plant is dead before its characteristically late spring growth.
The first season builds roots and a woody base even when spring emergence appears slow. Current-season shoots will carry the late flowers, so there is no reason to remove them prematurely.
Vertical branching becomes denser and, as days shorten, semi-double white flowers illuminate increasing numbers of crown positions.
At full maturity the crown reaches about 2.4–3.7 m in height and 1.8–3 m in spread. Final planting distance must follow that scale rather than the plant’s current young volume.
Side elevation: An indicative natural silhouette using published mature dimensions, not the plant’s current delivery size.
The seasonal cycle of Hibiscus syriacus ‘Notwoodtwo’ WHITE CHIFFON® is a deciduous hardy woody shrub; its bare winter form is natural.
‘Notwoodtwo’ arose from Dr Roderick Woods’ long-term programme at Great Shelford, England. The original genetic pool involved open pollination among unidentified H. syriacus seedlings, from which forms with pure white colour and internal petaloid organs were selected.
This clone was maintained from cuttings at Woodbridge from at least 1988. Repeated asexual culture confirmed five large white outer petals around smaller petaloid staminodes, together with vigorous upright growth; the cultivar was protected under USPP12612.
As WHITE CHIFFON® it became one of the clearest original expressions of the Chiffon Series and joined Proven Winners. The RHS retains an Award of Garden Merit for the exact ‘Notwoodtwo’, linking Woods’ historic selection with continuing garden evaluation.
In ‘Notwoodtwo’, five normal petals form a clear outer plane while part of the staminal whorl develops as smaller petaloid staminodes. The size difference between the two zones creates depth without closing the white flower into a solid ball.
With visible anthocyanin absent, microscopic tissue–air interfaces scatter much of the visible spectrum. The flower is therefore bright without a ‘white’ pigment and appears warmer under low evening light.
Six exact answers about placement, watering, pruning and seasonal behaviour for White Chiffon®.
It can grow in a very large pot, but a mature scale of 2.4–3.7 m × 1.8–3 m makes open ground the better long-term choice. In a pot, monitor moisture and root space more frequently.
Full sun for dense growth and plentiful buds; morning sun is useful in extreme heat. Keep an open visual field around its mature 1.8–3 m spread so the cultivar’s particular crown remains clearly legible.
Provide moderate but deep water once established. Avoid both chronic drought and heavy saturated soil.
White Chiffon® flowers on current-season shoots. Wait for buds to swell in late winter or early spring, then remove dead, weak or crossing wood.
The flower has no white pigment; it scatters much of the visible spectrum. As evening light becomes warmer, the petals’ visual impression changes with it.
White Chiffon® is deciduous and remains outdoors. A bare crown is normal and spring emergence is late; assess stem life when buds begin to swell.