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Mahonia swaseyi - (Buckley.)Fedde.
                 
Common Name Texas Mahonia, Texas barberry
Family Berberidaceae
USDA hardiness 7-10
Known Hazards None known
Habitats Besides rocky streams in Texas. Endemic to the Edwards Plateau in Texas, where it grows on limestone ridges and canyons at elevations of 150-600 metres[270].
Range South-western N. America.
Edibility Rating  
Other Uses  
Weed Potential No
Medicinal Rating  
Care
Frost Hardy Well drained soil Moist Soil Full sun

Summary

Mahonia swaseyi Texas Mahonia, Texas barberry


Mahonia swaseyi Texas Mahonia, Texas barberry
   
Physical Characteristics
 icon of manicon of shrub
Mahonia swaseyi is an evergreen Shrub growing to 2.5 m (8ft 2in).
It is hardy to zone (UK) 8. It is in leaf 12-Jan It is in flower from Apr to May. The flowers are hermaphrodite (have both male and female organs) and are pollinated by Bees.It is noted for attracting wildlife.
Suitable for: light (sandy), medium (loamy) and heavy (clay) soils and prefers well-drained soil. Suitable pH: acid, neutral and basic (alkaline) soils. It cannot grow in the shade. It prefers dry or moist soil.

Synonyms

Habitats
Woodland Garden Sunny Edge; Dappled Shade;
Edible Uses
Edible Parts: Fruit.
Edible Uses: Coffee.

Fruit - raw but more usually cooked in preserves[183]. Pleasantly acid, it can also be dried and used as raisins[183]. Unfortunately, there is relatively little flesh and a lot of seeds[K]. The fruit, which can be dry or juicy, is up to 15mm in diameter[183, 270]. The roasted seed is a coffee substitute[183].
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.

Antibacterial;  Antitumor;  Tonic.

Berberine, universally present in rhizomes of Mahonia species, has marked antibacterial effects[218] and is used as a bitter tonic[213]. Since it is not appreciably absorbed by the body, it is used orally in the treatment of various enteric infections, especially bacterial dysentery[218]. It should not be used with Glycyrrhiza species (Liquorice) because this nullifies the effects of the berberine[218]. Berberine has also shown antitumour activity[218]. The root and root bark are best harvested in the autumn[213].
Other Uses
None known
Cultivation details
Unlike most members of the genus, this species requires a dry, perfectly drained position in full sun, a gritty slightly acid soil is best[200]. It does well in a hot, dry position[200] and grows best on a sunny south facing wall[11]. It requires as sunny a position as possible[11, 200]. This species is not hardy in the colder areas of the country, it tolerates temperatures down to between -5 and -10°c[200]. This plant has been recommended for improvement by selection and breeding as an edible fruit[183]. Closely related to M. haematocarpa, differing mainly in having broadly ovate bracts up to 8mm long[11]. It is also closely related to M. nevinii[200].
Propagation
Seed - best sown as soon as it is ripe in a greenhouse[78]. It usually germinates in the spring[K]. 'Green' seed (harvested when the embryo has fully developed but before the seed case has dried) should be sown as soon as it is harvested and germinates within 6 weeks[K]. Stored seed should be sown as soon as possible in late winter or spring. 3 weeks cold stratification will improve its germination, which should take place in 3 - 6 months at 10°c. Prick out the seedlings when they are large enough to handle and grow them on in the greenhouse for at least their first winter. Plant them out in late spring or early summer and consider giving them some protection from the cold for their next winter. Division of suckers in spring[78]. Whilst they can be placed direct into their permanent positions, better results are achieved if they are potted up and placed in a frame until established[11]. Leaf cuttings in the autumn.

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Other Names
Found In
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
Mahonia aquifoliumOregon Grape, Hollyleaved barberry, Oregon Holly Grape, Oregon Holly33
Mahonia bealeiBeale's barberry, Leatherleaf Mahonia32
Mahonia confusa 32
Mahonia flavida 20
Mahonia fortuneiFortune's Mahonia32
Mahonia fremontiiMahonia, Fremont's mahonia32
Mahonia ganpinensis 12
Mahonia gracilipes 22
Mahonia gracilisMexican Barberry20
Mahonia haematocarpaMexican Barberry, Red barberry32
Mahonia japonica 32
Mahonia lomariifoliaChinese hollygrape32
Mahonia napaulensis 32
Mahonia nervosaOregon Grape, Cascade barberry32
Mahonia neviniiNevin's barberry32
Mahonia pinnataCalifornia Barberry, Wavyleaf barberry, Island barberry, Creeping Holly Grape32
Mahonia pumilaDwarf Barberry32
Mahonia repensCreeping Oregon Grape, Creeping barberry, Grape Oregon33
Mahonia trifoliolataMexican Barberry, Algerita32
Mahonia x media 32
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Expert comment
 
Author
(Buckley.)Fedde.
Botanical References
11270
Links / References
For a list of references used on this page please go here
Readers comment
 
Elizabeth H.
Robert Harms Sat Dec 17 2005

A Phenological and Morphological Study of Berberis in Hays County (Central Texas) Detailed study of B. swaseyi, B. trifoliolata and hybrids

Elizabeth H.
Robert Harms Mon May 29 2006

Berberis in Central Texas, a morphological and phenological study Detailed study of B. swaseyi, B. trifoliolata and hybrids. This replaces the earlier link to Robert Harms, 2005.

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Subject : Mahonia swaseyi  

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