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Paeonia japonica - (Makino.)Miyabe.&Takeda.

Common Name Yama-Shakuyaku
Family Paeoniaceae
USDA hardiness 6-9
Known Hazards None known
Habitats Thickets and open deciduous woods in mountains, C. and S. Japan[58].
Range E. Asia - Japan.
Edibility Rating  
Other Uses  
Weed Potential No
Medicinal Rating  
Care
Fully Hardy Moist Soil Semi-shade Full sun
Paeonia japonica Yama-Shakuyaku


http://commons.wikimedia.org/wiki/User:KENPEI
Paeonia japonica Yama-Shakuyaku
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Summary


Physical Characteristics

 icon of manicon of flower
Paeonia japonica is a PERENNIAL growing to 0.5 m (1ft 8in) by 0.5 m (1ft 8in).
It is hardy to zone (UK) 7. It is in flower from Jun to July. The species is hermaphrodite (has both male and female organs) and are pollinated by Insects.The plant is self-fertile.
Suitable for: light (sandy), medium (loamy) and heavy (clay) soils and can grow in heavy clay soil. Suitable pH: acid, neutral and basic (alkaline) soils. It can grow in semi-shade (light woodland) or no shade. It prefers moist soil.

Synonyms

Habitats

Woodland Garden Sunny Edge; Dappled Shade; Shady Edge;

Edible Uses

Edible Parts: Flowers;  Leaves;  Root.
Edible Uses:

Flowers[177]. No further details are given. Young leaves - cooked[177]. Root - chewed[177].

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.

Analgesic;  Antibacterial;  Antiinflammatory;  Antispasmodic;  Diuretic;  Febrifuge;  Sedative.

The root is analgesic, antibacterial, anti-inflammatory, antispasmodic, diuretic, febrifuge and sedative[174]. A tea made from the dried crushed petals of various peony species has been used as a cough remedy, and as a treatment for haemorrhoids and varicose veins[250].

Other Uses

None known

Cultivation details

Requires a deep rich soil, preferably neutral or slightly alkaline[1], doing quite well in sun or light shade[1, 200]. Plants are tolerant of a wide range of soil conditions, but will not survive if the soil becomes waterlogged or is too dry[250]. This species is lime tolerant[200]. Plants grown on sandy soils tend to produce more leaves and less flowers, whilst those growing on clay take longer to become established but produce better blooms[250]. Closely related to P. obovata, this species is not easily cultivated in Britain and tends to be a poor doer here[200]. Plants offered under this name in British nurseries are often P. suffruticosa 'Japanese'[200]. Some botanists now treat this plant as no more than a form of P. lactiflora[250]. A very long-lived plant, specimens can survive in the garden for at least 50 years[200]. Members of this genus are rarely if ever troubled by browsing deer or rabbits[233]. A very greedy plant inhibiting the growth of nearby plants, especially legumes[54]. Strongly resents root disturbance, taking some time to recover after being divided[1]. Peony species are usually self-fertile, though they will also hybridise with other species if these flower nearby at the same time[250]. Plants take 4 - 5 years to flower from seed[200]. They generally breed true from seed[1].

Propagation

Seed - best sown as soon as it is ripe in a cold frame[250]. When sown fresh, the seed produces a root about 6 weeks after sowing with shoots formed in the spring[200]. Stored seed is much slower, it should be sown as soon as possible in a cold frame but may take 18 months or more to germinate[200]. The roots are very sensitive to disturbance, so many growers allow the seedlings to remain in their pots for 2 growing seasons before potting them up. This allows a better root system to develop that is more resilient to disturbance[250]. If following this practice, make sure you sow the seed thinly, and give regular liquid feeds in the growing season to ensure the plants are well fed. We usually prick out the seedlings into individual pots as soon as they are large enough to handle, and then grow them on in a cold frame for at least two growing seasons before planting them out when they are in growth in the spring[K]. Division with great care in spring or autumn. Each portion must have a leaf bud. If the lifted root is stood in shade for several hours it becomes less brittle and easier to divide[200]. Divisions that have several buds will usually flower in the second year, but those that only have one or two buds will take a number of years before they have grown sufficiently to flower[250].

Other Names

If available other names are mentioned here

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 it’s worth checking.

Conservation Status

IUCN Red List of Threatened Plants Status :

Related Plants
Latin NameCommon NameEdibility RatingMedicinal Rating
Paeonia anomalaAnomalous peony, Common Peony13
Paeonia browniiBrown's Peony12
Paeonia caucasica 01
Paeonia delavayiTree Peony, Dian mu dan13
Paeonia emodi 12
Paeonia hybrida 11
Paeonia lactifloraChinese Peony, Peony13
Paeonia luteaTree Peony, Dian mu dan13
Paeonia mascula 01
Paeonia obovata 03
Paeonia officinalisPeony, Common peony12
Paeonia ostiiTree Peony12
Paeonia potaniniiTree Peony12
Paeonia suffruticosaMoutan, Moutan peony, Tree Peony, Japanese Tree Peony12
Paeonia szechuanicaTree Peony12
Paeonia veitchii 03

 

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Expert comment

Author

(Makino.)Miyabe.&Takeda.

Botanical References

58200

Links / References

For a list of references used on this page please go here

Readers comment

Kitty   Sun Aug 9 2009

I have grown this plant for 5 or 6 years in northeastern Indiana Zone 5 with no extra protection. It is healthy, happpy, and ready for division. I was told spring division is better than fall for this species, but fall works more to my advantage. That's why I checked this site - for more info on division. Anyone else have any tips to share on this plant?

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Subject : Paeonia japonica  
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