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Summary

Physical Characteristics

Philadelphus delavayi is a deciduous Shrub growing to 4 m (13ft) by 3 m (9ft).
See above for USDA hardiness. It is hardy to UK zone 6. It is in flower from June to July. The species is hermaphrodite (has both male and female organs) and is pollinated by Insects.
Suitable for: light (sandy), medium (loamy) and heavy (clay) soils and can grow in heavy clay and nutritionally poor soils. Suitable pH: mildly acid, neutral and basic (mildly alkaline) soils and can grow in very alkaline soils.
It can grow in semi-shade (light woodland) or no shade. It prefers moist soil.

UK Hardiness Map US Hardiness Map

Synonyms

Habitats

Woodland Garden Sunny Edge; Hedge;

Edible Uses

None known

References More on Edible Uses

Medicinal Uses

Plants For A Future can not take any responsibility for any adverse effects from the use of plants. Always seek advice from a professional before using a plant medicinally.

None known

References More on Medicinal Uses

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Other Uses

Hedge Hedge Soap

The leaves are rich in saponins[169], when crushed and mixed with water they produce a lather that is an effective cleaner, used on the body, clothes etc. You can wash your hands by merely picking a couple of leaves or a bunch of blossom, wetting your hands and then rubbing the plant material vigorously as if it was a bar of soap[K]. This soap is a very gentle cleaner that does not remove the body's natural oils, but does remove dirt. It is not very effective against oil[K]. Plants can be grown as an informal hedge or screen[200].

Special Uses

Hedge Hedge Scented Plants

References More on Other Uses

Cultivation details

An easily grown plant, succeeding in any moderately fertile soil, and also in thin soils over chalk[200]. Grows well in heavy clay soils. Tolerates poor soils[200]. Succeeds in semi-shade but prefers a position in full sun where it will flower more freely[182, 200]. Grows well on the woodland edge or in a glade[200]. Hardy to about -15°c[184]. Some named forms have been developed for their ornamental value[182]. The flowers are sweetly orange-scented[245]. Plants are very tolerant of pruning, one third of the stems can be cut down to the ground each year in order to promote fresh growth and heavier flowering[202].

References Carbon Farming Information and Carbon Sequestration Information

Temperature Converter

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The PFAF Bookshop

Plants For A Future have a number of books available in paperback and digital form. Book titles include Edible Plants, Edible Perennials, Edible Trees, and Woodland Gardening. Our new book to be released soon is Edible Shrubs.

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Propagation

Seed - best if given 1 months cold stratification[113]. Sow February in a light position in a cold frame. When they are large enough to handle, prick the seedlings out into individual pots and grow them on in the greenhouse for their first winter. Plant them out into their permanent positions in late spring or early summer, after the last expected frosts. Cuttings of half-ripe wood, 7 - 10cm long side-shoots, July/August in a shaded frame. Plant out in spring. High percentage[78]. Cuttings of mature wood of the current year's growth, 15 - 25cm with a heel, December in a sheltered bed outdoors. Fair to good percentage[78]. Layering in summer. Very easy.

Other Names

If available other names are mentioned here

Native Plant Search

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Found In

Countries where the plant has been found are listed here if the information is available

Weed Potential

Right plant wrong place. We are currently updating this section. Please note that a plant may be invasive in one area but may not in your area so itâ€™s worth checking.

Conservation Status

IUCN Red List of Threatened Plants Status :

Related Plants

Latin Name	Common Name	Habit	Height	Hardiness	Growth	Soil	Shade	Moisture	Edible	Medicinal	Other
Philadelphus coronarius	Mock Orange, Sweet mock orange	Shrub	4.0	4-8	F	LMH	SN	M	0	0	1
Philadelphus lewisii	Mock Orange, Lewis' mock orange	Shrub	3.6	4-8		LMH	SN	M	0	1	3
Philadelphus microphyllus	Littleleaf Mock Orange	Shrub	1.2	5-9		LMH	SN	DM	1	0	1
Philadelphus pubescens	Hoary mock orange	Shrub	5.0	5-9		LMH	SN	M	0	0	1
Philadelphus purpurascens		Shrub	4.0	5-9		LMH	SN	DM	0	0	1
Philadelphus x virginalis	Mock Orange	Shrub	3.0	5-8	M	LMH	SN	M	0	0	1

Growth: S = slow M = medium F = fast. Soil: L = light (sandy) M = medium H = heavy (clay). pH: A = acid N = neutral B = basic (alkaline). Shade: F = full shade S = semi-shade N = no shade. Moisture: D = dry M = Moist We = wet Wa = water.

Philadelphus delavayi - Henry.