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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    (3 of 5)
Other Uses    (0 of 5)
Weed Potential No
Medicinal Rating    (2 of 5)
Care (info)
Frost Hardy Well drained soil Moist Soil Full sun
Mahonia swaseyi Texas Mahonia, Texas barberry


Mahonia swaseyi Texas Mahonia, Texas barberry

 

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Summary


Physical Characteristics

 icon of manicon of shrub
Mahonia swaseyi is an evergreen Shrub growing to 2.5 m (8ft 2in).
See above for USDA hardiness. It is hardy to UK zone 8. It is in leaf all year, in flower from April to May. The species is hermaphrodite (has both male and female organs) and is 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: mildly acid, neutral and basic (mildly alkaline) soils. It cannot grow in the shade. It prefers dry or moist soil.

UK Hardiness Map US Hardiness Map

Synonyms

Plant 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].

References   More on Edible Uses

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  Dysentery  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].

References   More on Medicinal Uses

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Other Uses

None known

Special Uses

Attracts Wildlife

References   More on Other Uses

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].

References   Carbon Farming Information and Carbon Sequestration Information

Temperature Converter

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The PFAF Bookshop

Plants For A Future have a number of books available in paperback and digital form. Book titles include Edible Plants, Edible Perennials, Edible Trees,Edible Shrubs, Woodland Gardening, and Temperate Food Forest Plants. Our new book is Food Forest Plants For Hotter Conditions (Tropical and Sub-Tropical).

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Plant 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.

Other Names

If available other names are mentioned here

Native Range

NORTHERN AMERICA: United States (Texas (c.))

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 NameHabitHeightHardinessGrowthSoilShadeMoistureEdibleMedicinalOther
Mahonia aquifoliumOregon Grape, Hollyleaved barberry, Oregon Holly Grape, Oregon HollyShrub2.0 4-8 FLMHFSNDM333
Mahonia bealeiBeale's barberry, Leatherleaf MahoniaShrub2.0 5-8 SLMHFSNM320
Mahonia confusa Shrub1.5 6-9  LMHFSM32 
Mahonia flavida Shrub2.0 7-10  LMHFSNM20 
Mahonia fortuneiFortune's MahoniaShrub2.0 7-9 SLMHFSNM32 
Mahonia fremontiiMahonia, Fremont's mahoniaShrub2.5 7-10 SLMHNDM322
Mahonia ganpinensis Shrub0.0 -  LMHSNM12 
Mahonia gracilipes Shrub1.5 6-9  LMHFSM22 
Mahonia gracilisMexican BarberryShrub1.5 7-10  LMHNDM20 
Mahonia haematocarpaMexican Barberry, Red barberryShrub3.6 7-10  LMHNDM322
Mahonia japonica Shrub2.0 5-9  LMHFSNM32 
Mahonia lomariifoliaChinese hollygrapeShrub5.0 8-9 MLMHSNM320
Mahonia napaulensis Shrub2.5 5-9  LMHSNM321
Mahonia nervosaOregon Grape, Cascade barberryShrub0.6 5-9 SLMHFSNDM323
Mahonia neviniiNevin's barberryShrub2.4 7-10  LMHNDM322
Mahonia pinnataCalifornia Barberry, Wavyleaf barberry, Island barberry, Creeping Holly GrapeShrub1.8 7-8 FLMHSNM322
Mahonia pumilaDwarf BarberryShrub0.3 6-9 SLMSNDM323
Mahonia repensCreeping Oregon Grape, Creeping barberry, Grape OregonShrub0.3 4-8 SLMHSNDM334
Mahonia trifoliolataMexican Barberry, AlgeritaShrub2.0 6-9  LMHNDM324
Mahonia x media Shrub2.0 6-9  LMHFSNM320

Growth: S = slow M = medium F = fast. Soil: L = light (sandy) M = medium H = heavy (clay). pH: A = acid N = neutral B = basic (alkaline). Shade: F = full shade S = semi-shade N = no shade. Moisture: D = dry M = Moist We = wet Wa = water.

 

Expert comment

Author

(Buckley.)Fedde.

Botanical References

11270

Links / References

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

Readers comment

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

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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