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Summary
Bloom Color: Yellow. Main Bloom Time: Early summer, Mid summer. Form: Rounded, Vase.
Physical Characteristics
Zanthoxylum clava-herculis is a deciduous Shrub growing to 3 m (9ft 10in) at a medium rate.
See above for USDA hardiness. It is hardy to UK zone 6. It is in leaf from March to January, in flower from May to June, and the seeds ripen from September to October. The species is dioecious (individual flowers are either male or female, but only one sex is to be found on any one plant so both male and female plants must be grown if seed is required). . The plant is not self-fertile.
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 can grow in semi-shade (light woodland) or no shade. It prefers moist soil.
UK Hardiness Map
US Hardiness Map
Synonyms
Zanthoxylum carolinianum. Zanthoxylum catesbianum. Zanthoxylum clavatum.
Plant Habitats
Woodland Garden Sunny Edge; Dappled Shade; Shady Edge;
Edible Uses
The following report is for Z. americanum, it is probably also applicable to this species[K]. Seed - used as a condiment. A pepper substitute[106]. The fruit is rather small, about 4 - 5m in diameter[229], but is produced in dense clusters which makes harvesting easy[K]. Each fruit contains a single seed[229].
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.
Antirheumatic Antispasmodic Diuretic Dysentery Irritant Odontalgic Stimulant
This species is quite widely used in herbal medicine, it has the same properties as Z. americanum, but is said to be more active[4]. All parts of the plant, but especially the bark and roots, contain the aromatic bitter oil xanthoxylin[4]. This has a number of applications in medicine[4]. The fruit has a similar medicinal action to the bark[4]. The bark and roots are irritant, odontalgic and antirheumatic[213]. Along with the fruit they are diaphoretic, stimulant and a useful tonic in debilitated conditions of the stomach and digestive organs[4]. They produce arterial excitement and are of use in the treatment of fevers, ague, poor circulation etc[4]. The fruits are considered more active than the bark, they are also antispasmodic, carminative, diuretic and antirheumatic[4, 213, 222]. The pulverized root and bark are used to ease the pain of toothache[213, 222]. One report says that it is very efficacious, but the sensation of the acrid bark is fully as unpleasant as the toothache[213]. Chewing the bark induces copious salivation[222]. Rubbing the fruit against the skin, especially on the lips or in the mouth, produces a temporary loss of sensation[K]. A tea or tincture of the bark has been used in the treatment of rheumatism, dyspepsia, dysentery, heart and kidney troubles etc[222]. A tea made from the inner bark has been used to treat itchy skin[213].
References More on Medicinal Uses
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Other Uses
Wood - light, soft, weak and close-grained[82, 229]. It weighs 31lb per cubic foot[227]. Too small for commercial use[229].
Special Uses
References More on Other Uses
Cultivation details
Landscape Uses:Border, Massing. Prefers a good deep well-drained moisture retentive soil in full sun or semi-shade[1, 11, 200]. Plants are hardy to at least -15°c[200]. The leaves are often persistent until the following spring when the new leaves are produced[82]. Dioecious. Male and female plants must be grown if seed is required. Flowers are formed on the old wood[206]. Special Features:North American native, Attracts butterflies, Inconspicuous flowers or blooms.
References Carbon Farming Information and Carbon Sequestration Information
Temperature Converter
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Plant Propagation
Seed - best sown in a greenhouse as soon as it is ripe in the autumn. Stored seed may requires up to 3 months cold stratification, though scarification may also help[113]. Sow stored seed in a cold frame as early in the year as possible. Germination should take place in late spring, though it might take another 12 months. Prick out the seedlings into individual pots when they are large enough to handle and grow them on in a cold frame for their first winter. Plant them out in early summer. Cuttings of half-ripe wood, July/August in a frame. Root cuttings, 3cm long, planted horizontally in pots in a greenhouse. Good percentage[78]. Suckers, removed in late winter and planted into their permanent positions[113].
Other Names
If available other names are mentioned here
Native Range
NORTHERN AMERICA: United States (Oklahoma, Alabama, Arkansas, Florida, Georgia (southeast), Louisiana, North Carolina (east), South Carolina, Virginia (east), Mississippi, Texas)
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 :
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
L.
Botanical References
200274
Links / References
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