Berberis gagnepainii

Family: Berberidaceae

What it is like

Berberis gagnepainii is an evergreen Shrub growing to 2.4 m (7ft) by 2 m (6ft). See above for USDA hardiness. It is hardy to UK zone 5 and is not frost tender. It is in leaf all year, in flower in June, and the seeds ripen from September to October. The species is hermaphrodite (has both male and female organs) and is pollinated by Insects. The plant is self-fertile. Suitable for: light (sandy), medium (loamy) and heavy (clay) soils and can grow in heavy clay and nutritionally poor soils. Suitable pH: mildly acid, neutral and basic (mildly alkaline) soils. It can grow in semi-shade (light woodland) or no shade. It prefers dry or moist soil.

Height (m): 2.4

Where it is found

Thickets and woodlands, 2000 - 4000 metres.

E. Asia - China in Sichuan.

Conservation Status:

Countries/locations it is found in

How it is used

Food

Rating: 2

Fruit - raw or cooked. The fruits are about 10mm long.

Medicine

Rating: 2

Berberine, universally present in rhizomes of Berberis species, has marked antibacterial effects. Since it is not appreciably absorbed by the body, it is used orally in the treatment of various enteric infections, especially bacterial dysentery. It should not be used with Glycyrrhiza species (Liquorice) because this nullifies the effects of the berberine. Berberine has also shown antitumour activity.

Antibacterial: Kills bacteria.

Cancer: Used in the treatment of cancer.

Dysentery: Used in treating dysentery - an infection of the intestines that causes diarrhoea containing blood or mucus.

Other

Rating:

The plant makes an impenetrable hedge that can be trimmed or left to its own devices. A yellow dye is obtained from the root.

Dye: Plants that provide dyes.

Hedge: Plants that can be grown as hedges.

Hedge: Hedge

How it is grown

Prefers a warm moist loamy soil and light shade but it is by no means fastidious, succeeding in thin, dry and shallow soils. Grows well in heavy clay soils. A number of cultivars have been selected for their ornamental value. Hybridizes freely with other members of this genus. Plants can be pruned back quite severely, they resprout well from the base.

Propagating it: Seed - best sown as soon as it is ripe in a cold frame, when it should germinate in late winter or early spring. Seed from over-ripe fruit will take longer to germinate, whilst stored seed may require cold stratification and should be sown in a cold frame as early in the year as possible. The seedlings are subject to damping off, so should be kept well ventilated. When the seedlings are large enough to handle, prick them out into individual pots and grow them on in a cold frame. If growth is sufficient, it can be possible to plant them out into their permanent positions in the autumn, but generally it is best to leave them in the cold frame for the winter and plant them out in late spring or early summer of the following year. Cuttings of half-ripe wood, July/August in a frame. Cuttings of mature wood of the current season's growth, preferably with a heel, October/November in a frame. Suckers, removed in late autumn/early winter and planted out in situ or potted up and planted out in late spring.

Best place to grow: Woodland Garden Dappled Shade; Shady Edge; Hedge;

Habit: Shrub

Hardiness: 4-8

Growth:

Soil: Light (sandy), medium, heavy (clay)

Shade: Semi-shade, no shade

Moisture: Dry, moist

Things to keep in mind

Its other names

Local names

Synonyms

B. acuminata. non Franch.