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Hydrangea paniculata

Common name:		Family:	Hydrangeaceae
Author:	Siebold.	Botanical references:	11, 200, 266
Synonyms:
Known Hazards:	None known
Range:	E. Asia - China, Japan.
Habitat:	Bamboo scrub, open forests and by streams[184]. Sparse forests or thickets in valleys or on mountain slopes or tops, at elevations of 300 - 2100 metres in China[266].
Edibility Rating (1-5):	1	Medicinal Rating (1-5):	2

Other Possible Synonyms:	From various places across the web, may not be correct. See below.
	H. paniculata var. intermedia[G] H. paniculata var. praecox[G]
Other Common Names:	From various places around the Web, may not be correct. See below.
	Panicle Hydrangea [DEN1], Panicled Hydrangea [B,P],
Epithets:	From a Dictionary of Botanical Epithets
	paniculata = with panicles;
Systematics:	From a USDA Plants Database
	Order: Rosales. Hydrangea family
Other Range Info:	From the Ethnobotany Database
	China

Physical Characteristics

A decidious shrub growing to 4m by 4m at a fast rate. It is hardy to zone 3 and is frost tender. It is in flower from July to August, and the seeds ripen from September to October. The flowers are hermaphrodite (have both male and female organs) and are pollinated by Bees. We rate it 1/5 for edibility and 2/5 for medicinal use.

The plant prefers light (sandy), medium (loamy) and heavy (clay) soils. The plant prefers acid, neutral and basic (alkaline) soils and can grow in very acid soil. It can grow in semi-shade (light woodland) or no shade. It requires moist or wet soil.

Habitats and Possible Locations

Bog Garden, Woodland, Sunny Edge, Dappled Shade, Shady Edge.

Edible Uses

Rutin.

The flowers contain up to 4.06% rutin[240].

Medicinal Uses

Disclaimer

Blood tonic.

The flowers contain up to 4.06% rutin[240]. This makes them useful for reducing the incidence of recurrent haemorrhages associated with increased capillary fragility, particularly in hypertension[240].
The flowers also contain 2.5% of a phenolic compound[240].

Other Uses

Nails; Paper; Wood.

The bark is used to make Japanese paper[46, 61, 74].
Wood - hard, white, fine grained. Used for small items, nails, walking sticks etc[46, 61, 74].

Cultivation details

Tolerates most soil[200], thriving in a well-drained loamy soil[1], but resenting dryness at the roots[11, 200]. Tolerates boggy soils[74]. Dislikes very alkaline soils[202]. Does well on very acid soils with a pH around 4.5[200]. The colour of the flowers reflects the pH of the soil the plant is growing in, the flowers are pink in a neutral to alkaline soil and blue in an acid soil. Succeeds in full sun or semi-shade[200], but if it is grown in a low rainfall area then it requires shade at the hottest part of the day[11].
Plants are hardy to about -25°c[184] when dormant but the young growth in spring can be killed by late frosts.
A fast-growing plant[202].
A number of cultivars have been selected for their ornamental value[182].
Plants are very tolerant of pruning and can be cut back into old wood if required[188].
This species is notably susceptible to honey fungus[200].

Propagation

Seed - surface sow in a greenhouse in spring[113]. Cover the pot with paper until the seed germinates[78]. When they are large enough to handle, prick the seedlings out into individual pots and grow them on in the greenhouse for at least 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, 8cm long, July/August in a frame. Overwinter in a greenhouse and plant out in late spring[78].
Cuttings of mature wood in late autumn in a frame[200].
Mound layering in spring. Takes 12 months[78].
Leaf-bud cuttings of the current seasons growth in a frame[200].

Cultivars

'': No entries have been made for this species as yet.

Suppliers

For more details of plant suppliers please see our Suppliers Page which lists many more places to look.

Web References

[E] Ethnobotany Data (common names, uses, countries) from the Ethnobotany Database.
[B] Data (Latin & Common names, other references) from the BONAP's Synonymized Checklist of the Vascular Flora of the United States, Puerto Rico, and the Virgin Islands.
[G] Data (Common Names, Uses, Distribution) from the USDA/ARS NPGS's GRIN taxonomic database.
[PHARM] Phytochemical Data (common names, uses, countries) from Dr Duke's Phytochemical Database.
[P] Data. (uses, distribution, wetland) from the USDA'a Plants database.
[HP] Links, Photos, Suppliers from Hortiplex Plant Database
[DEN] Data _ Photos (Good Identification info) from the Virginia Tech's Dendrology Deptarments' Tree Fact Sheets.

See the PFAF Links Pages for other sources.

Also try Photos and info from the The Plants Database which has 14,000 images.

References

[1] F. Chittendon. RHS Dictionary of Plants plus Supplement. 1956 Oxford University Press 1951
Comprehensive listing of species and how to grow them. Somewhat outdated, it has been replaces in 1992 by a new dictionary (see [200]).

[11] Bean. W. Trees and Shrubs Hardy in Great Britain. Vol 1 - 4 and Supplement. Murray 1981
A classic with a wealth of information on the plants, but poor on pictures.

[46] Uphof. J. C. Th. Dictionary of Economic Plants. Weinheim 1959
An excellent and very comprehensive guide but it only gives very short descriptions of the uses without any details of how to utilize the plants. Not for the casual reader.

[61] Usher. G. A Dictionary of Plants Used by Man. Constable 1974 ISBN 0094579202
Forget the sexist title, this is one of the best books on the subject. Lists a very extensive range of useful plants from around the world with very brief details of the uses. Not for the casual reader.

[74] Komarov. V. L. Flora of the USSR. Israel Program for Scientific Translation 1968
An immense (25 or more large volumes) and not yet completed translation of the Russian flora. Full of information on plant uses and habitats but heavy going for casual readers.

[78] Sheat. W. G. Propagation of Trees, Shrubs and Conifers. MacMillan and Co 1948
A bit dated but a good book on propagation techniques with specific details for a wide range of plants.

[113] Dirr. M. A. and Heuser. M. W. The Reference Manual of Woody Plant Propagation. Athens Ga. Varsity Press 1987 ISBN 0942375009
A very detailed book on propagating trees. Not for the casual reader.

[182] Thomas. G. S. Ornamental Shrubs, Climbers and Bamboos. Murray 1992 ISBN 0-7195-5043-2
Contains a wide range of plants with a brief description, mainly of their ornamental value but also usually of cultivation details and varieties.

[184] Phillips. R. & Rix. M. Shrubs. Pan Books 1989 ISBN 0-330-30258-2
Excellent photographs and a terse description of 1900 species and cultivars.

[188] Brickell. C. The RHS Gardener's Encyclopedia of Plants and Flowers Dorling Kindersley Publishers Ltd. 1990 ISBN 0-86318-386-7
Excellent range of photographs, some cultivation details but very little information on plant uses.

[200] Huxley. A. The New RHS Dictionary of Gardening. 1992. MacMillan Press 1992 ISBN 0-333-47494-5
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.

[202] Davis. B. Climbers and Wall Shrubs. Viking. 1990 ISBN 0-670-82929-3
Contains information on 2,000 species and cultivars, giving details of cultivation requirements. The text is terse but informative.

[240] Chopra. R. N., Nayar. S. L. and Chopra. I. C. Glossary of Indian Medicinal Plants (Including the Supplement). Council of Scientific and Industrial Research, New Delhi. 1986
Very terse details of medicinal uses of plants with a wide range of references and details of research into the plants chemistry. Not for the casual reader.

[266] Flora of China 1994
On-line version of the Flora - an excellent resource giving basic info on habitat and some uses.

Readers Comments

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Plant information taken from the Plants For A Future - Species Database. Copyright (c) 1997-2003.
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