Aristolochia tomentosa - Dutchman's Pipe

Family:	Aristolochiaceae
Habit:	Perennial
Height:	10
Width:	1
Synonyms:
Range:	South-eastern N. America - North Carolina too Florida, west to Texas, Kansas and Illinois.

Aristolochia tomentosa (Dutchman's Pipe) is a Perennial which grows to a height of 10m and a width of 1m . It has a fast growth rate. It has a hardness rating of 8.
Dutchman's Pipe will flower in January to February. The flowers from this plant are hermaphrodite (has both male and female organs) and they are pollinated by Flies

Soil Information

Dutchman's Pipe will grow in light (sandy),medium (loamy),hard (clay) soil. It is / is important for the soil to be well drained.
The soil prefers the following PH / acid levels :
- pH of less than 6, Acidic soils
- pH between 6 and 8, Neutral soils
- pH greater than 8, Basic soils
Dutchman's Pipe prefers either dry or moist soils

Ideal Planting Locations

Dutchman's Pipe can grow in semi or areas with no shade.

Moist woods[200] along rich river banks[222].

Planting places suited to this plant described below.

• Grows within a woodland garden
• Works within dappled Shade

Cultivation Details

Prefers a well-drained loamy soil, rich in organic matter, in sun or semi-shade[1, 200], but succeeds in ordinary garden soil[134]. Plants are hardy to at least -10°c[200]. A fast-growing climbing plant, attaching itself by means of twining around other plants, it has been recommended for covering pergolas[200]. Most species in this genus have malodorous flowers that are pollinated by flies[200].

Edible Uses*

* See disclaimer
Edible Rating: 0/5
None known

Medicinal Uses*

* See disclaimer
Medicinal Rating: 2/5
This species has medicinal activity that is similar to but weaker than A. serpentaria[222]. - these activities are listed below[K]. The Virginia snakeroot is attracting increasing interest for its medicinal virtues and as a result is becoming uncommon in the wild. It merits consideration for cultivation in forest areas[222]. It is used in a number of proprietary medicines for treating skin, circulatory and kidney disorders[238]. The plant contains aristolochic acid which, whilst stimulating white blood cell activity and speeding the healing of wounds, is also carcinogenic and damaging to the kidneys[254]. The root is harvested in the autumn and dried for later use[238]. The root is antidote, anti-inflammatory, bitter tonic, diaphoretic, diuretic and stimulant[1, 2, 4, 21, 46, 200]. Traditionally it was chewed in minute doses or used as a weak tea to promote sweating, stimulate the appetite and promote expectoration[4, 222]. The native North Americans considered it to have analgesic properties and used an infusion internally to treat rheumatism, pain - but especially sharp pains in the breast, and as a wash for headaches[257]. This plant should be used with caution, it is irritating in large doses and can cause nausea, griping pains in the bowels etc[4, 21, 222]. It should only be used internally under the supervision of a qualified practitioner[238]. The bruised root is placed in hollow teeth for treating toothache[207]. An extract of the root can be drunk to relieve stomach pains[207]. The boiled root, or a decoction of the whole plant, can be used to treat fevers[213]. The chewed root or crushed leaves was applied to snakebites[207, 213]. This species was the most popular snakebite remedy in N. America[213]. It has also been applied externally to slow-healing wounds and in the treatment of pleurisy[238].

• Antidote - Counters poisoning.
• Bitter - Increases the appetite and stimulates digestion by acting on the mucous membranes of the mouth. Also increases the flow of bile, stimulates repair of the gut wall lining and regulates the secretion of insulin and glucogen.
• Diaphoretic - Induces perspiration.
• Expectorant - Clears phlegm from the chest by inducing coughing.
• Febrifuge - Reduces fevers.
• Odontalgic - Treats toothache (temporary measure only) and other problems of the teeth and gums.
• Stimulant - Excites or quickens activity of the physiological processes. Faster acting than a tonic but differing from a narcotic in that it does not give a false sense of well-being.
• Tonic - Improves general health. Slower acting than a stimulant, it brings steady improvement.

Propagation

Seed - best sown in a greenhouse as soon as it is ripe in the autumn. Pre-soak stored seed for 48 hours in hand-hot water and surface sow in a greenhouse[134]. Germination usually takes place within 1 - 3 months at 20°c[134]. Stored seed germinates better if it is given 3 months cold stratification at 5°c[200]. When large enough to handle, prick the seedlings out into individual pots and grow them on in the greenhouse for their first winter. Plant out in late spring or early summer after the last expected frosts. Division in autumn[200]. Root cuttings in winter[200].

Known Hazards

We have no specific details for this species but most members of this genus have poisonous roots and stems[179]. The plant contains aristolochic acid, this has received rather mixed reports on its toxicity. According to one report aristolochic acid stimulates white blood cell activity and speeds the healing of wounds, but is also carcinogenic and damaging to the kidneys[254]. Another report says that it is an active antitumour agent but is too toxic for clinical use[218]. Another report says that aristolochic acid has anti-cancer properties and can be used in conjunction with chemotherapy and radiotherapy and that it also increases the cellular immunity and phagocytosis function of the phagocytic cells[176].

Other Uses

None known

Cultivars

no recorded cultivars

References

The New RHS Dictionary of Gardening. 1992.
Huxley. A.
Author: Huxley. A.
Rating:
Publisher : Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
Date of Publication : 1992

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