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Hypericum calycinum - L.                
                 
Common Name Rose Of Sharon
Family Hypericaceae
Synonyms
Known Hazards None known
Habitats Grassy places and open woods to 1800 metres[184].
Range W. Asia - Turkey. Naturalized in Britain.
Edibility Rating  
Medicinal Rating  
Care
Fully Hardy Well drained soil Moist Soil Full shade Semi-shade Full sun

Summary       

Physical Characteristics       
 icon of manicon of shrub
Hypericum calycinum is an evergreen Shrub growing to 0.3 m (1ft) by 1 m (3ft 3in) at a fast rate.
It is hardy to zone 6. It is in leaf 12-Jan It is in flower from Jun to September, and the seeds ripen from Sep to October. The flowers are hermaphrodite (have both male and female organs) and are pollinated by Insects, self.The plant is self-fertile.


USDA hardiness zone : Coming soon


Suitable for: light (sandy), medium (loamy) and heavy (clay) soils, prefers well-drained soil and can grow in heavy clay and nutritionally poor soils. Suitable pH: acid, neutral and basic (alkaline) soils and can grow in very alkaline soils.
It can grow in full shade (deep woodland) semi-shade (light woodland) or no shade. It prefers dry or moist soil and can tolerate drought.

Hypericum calycinum Rose Of Sharon


http://commons.wikimedia.org/wiki/User:Franz_Xaver
Hypericum calycinum Rose Of Sharon
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Habitats       
Woodland Garden Sunny Edge; Dappled Shade; Shady Edge; not Deep Shade; Ground Cover;
Edible Uses                                         
None known
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
Other Uses
Dye.

A good ground cover plant[182, 208], succeeding in the heavy shade of trees and in dry shade[190, 200]. Very vigorous, it can swamp out small plants. For the densest cover plants should be cut to ground level each April[197]. A yellow-orange dye is obtained from the flowers.
Cultivation details                                         
Easily grown in any reasonably good well-drained but moisture retentive soil.[1] Succeeds in dry soils[200] and in chalky soils[11]. Grows well in heavy clay soils. Succeeds in sun or shade but flowers better in a sunny position[11]. Grows well even in the shade of tall trees[1, 20, 31]. Tolerates poor soils and also drought when it is established[184]. A very cold-hardy plant, tolerating temperatures down to about -25°c[184]. A very ornamental but very invasive plant, spreading by means of stolons[1, 182]. Seldom sets seed in Britain, probably due to our wet autumns[182]. Plants are often afflicted with rust disease[182, 200]. Plants in this genus are notably resistant to honey fungus[200].
                                                                                 
Propagation                                         
Seed - sow spring in a greenhouse and only just cover the seed. Germination usually takes place within 1 - 3 months at 10°c. 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 10 - 12 cm with a heel, July/August in a frame. Plant out in the following spring[200]. Cuttings of mature wood, 12 - 17cm with a heel, October/November in a sheltered position outdoors. Plants root by the spring. Good percentage[78]. Division in spring as new growth commences[78]. Very easy, larger clumps can be replanted direct into their permanent positions, though it is best to pot up smaller clumps and grow them on in a cold frame until they are rooting well. Plant them out in the spring.
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Expert comment                                         
 
      
Author                                         
L.
                                                                                 
Botanical References                                         
1117200
                                                                                 
Links / References                                         

[1]F. Chittendon. RHS Dictionary of Plants plus Supplement. 1956
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.
A classic with a wealth of information on the plants, but poor on pictures.
[20]Riotte. L. Companion Planting for Successful Gardening.
Fairly good.
[31]Brown. Shade Plants for Garden and Woodland.
[78]Sheat. W. G. Propagation of Trees, Shrubs and Conifers.
A bit dated but a good book on propagation techniques with specific details for a wide range of plants.
[182]Thomas. G. S. Ornamental Shrubs, Climbers and Bamboos.
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.
Excellent photographs and a terse description of 1900 species and cultivars.
[190]Chatto. B. The Dry Garden.
A good list of drought resistant plants with details on how to grow them.
[197]Royal Horticultural Society. Ground Cover Plants.
A handy little booklet from the R.H.S.
[200]Huxley. A. The New RHS Dictionary of Gardening. 1992.
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
[208]Thomas. G. S. Plants for Ground Cover
An excellent detailled book on the subject, very comprehensive.

Readers comment                                         
 
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Subject : Hypericum calycinum  
             

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