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Paeonia delavayi - Franch.
                 
Common Name Tree Peony, Dian mu dan
Family Paeoniaceae
USDA hardiness 5-9
Known Hazards None known
Habitats Shady, moist areas of pine forests, in forest clearings and among scrub at altitudes of between 3,050 - 3,650 metres[250].
Range E. Asia - China in Yunnan and Likiang.
Edibility Rating  
Other Uses  
Weed Potential No
Medicinal Rating  
Care
Fully Hardy Moist Soil Semi-shade Full sun

Summary

Paeonia delavayi Tree Peony, Dian mu dan


Paeonia delavayi Tree Peony, Dian mu dan
   
Physical Characteristics
 icon of manicon of shrub
Paeonia delavayi is a deciduous Shrub growing to 1.6 m (5ft) by 3 m (9ft).
It is hardy to zone (UK) 6 and is not frost tender. It is in flower in June. The flowers are hermaphrodite (have 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 and can grow in very 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.
Edible Uses:

The following use is for P. suffruticosa. It quite probably also applies to this closely-related species.[K - see 214]. Flowers - cooked[46, 61, 177]. The fallen flower petals are parboiled and sweetened for a teatime delicacy, or can be cooked in various dishes[183].
Medicinal Uses


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Analgesic;  Antibacterial;  Antiinflammatory;  Antispasmodic.

The bark obtained from the root has an antimicrobial effect upon various bacteria, including Escherichia coli, typhoid, cholera, Staphylococcus aureus, streptococcus hemolyticus and Pneumococci[250]. The root is also anti-inflammatory and has been used with success in the treatment of arthritic joint swelling[250]. The root is also analgesic, sedative and anticonvulsant, it has a high success rate in the treatment of dysentery and can also be used to treat allergic rhinitis[250]. The plant is used internally in the treatment of fevers, boils, menstrual disorders, nosebleeds, ulcers, irritability and gastro-intestinal infections[238]. This remedy should only be used under the supervision of a qualified practitioner[238]. The herb acts as a synergist when used with liquorice (Glycyrrhiza spp)[218]. 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
An easily grown and undemanding plant[250], it prefers a deep rich soil, preferably neutral or slightly alkaline[1], doing quite well in sun or light shade[1]. Prefers a limy soil and a sheltered position[200]. Grows well in heavy clay soils and on chalk[184].Plants are tolerant of a wide range of soil conditions, but will not survive if the soil becomes waterlogged or is too dry[250]. 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]. Hardy to about -20°c[184], plants do better in the north of Britain than they do in the south and are generally best if given an open northerly aspect[11]. A very ornamental and long-lived plant[1], it grows rapidly and produces lots of lateral shoots[250]. It grows best in areas with long hot summers[1] and requires an airy position because it is very subject to fungal attack[11]. Plants in this genus are notably susceptible to honey fungus[200]. This species comes into growth early in the year but unlike P. suffruticosa it does not seem to be subject to damage by late frosts[11]. It is probably best still given a position sheltered from the early morning sun. The branches are brittle and very subject to wind damage, especially when young[200]. This species is closely related to P. lutea[11]. 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. The plant does not really need much pruning apart from removing dead or diseased stems. It is, however, very tolerant of pruning and can be cut right back to ground level if it requires rejuvenation[200]. 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]. This species will often self-sow freely when well sited[250]. Plants take 4 - 5 years to flower from seed[200]. They generally breed true from seed[1]. Cultivated in China as a medicinal plant[214].
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].
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 anomala 13
Paeonia browniiBrown's Peony12
Paeonia caucasica 01
Paeonia emodi 12
Paeonia hybrida 11
Paeonia japonicaYama-Shakuyaku11
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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Botanical References
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Subject : Paeonia delavayi  

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