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Collinsonia canadensis - L.

Common Name Stone Root - Horse Balm, Richweed
Family Lamiaceae or Labiatae
USDA hardiness 4-8
Known Hazards Minute doses of the fresh leaves can cause vomiting[222], though the root is well-tolerated by the body[238]. Possible blood pressure elevation [301].
Habitats Rich damp woods[43, 222].
Range Eastern N. America - Ontario and Vermont to Florida, west to Wisconsin.
Edibility Rating  
Other Uses  
Weed Potential No
Medicinal Rating  
Care
Fully Hardy Moist Soil Wet Soil Semi-shade
Collinsonia canadensis Stone Root - Horse Balm,  Richweed


Collinsonia canadensis Stone Root - Horse Balm,  Richweed
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Summary


Physical Characteristics

 icon of manicon of flower
Collinsonia canadensis is a PERENNIAL growing to 0.8 m (2ft 7in) by 0.4 m (1ft 4in).
It is hardy to zone (UK) 4. It is in flower in August. The species is hermaphrodite (has both male and female organs) and are pollinated by Insects. Suitable for: light (sandy) and medium (loamy) soils. Suitable pH: acid, neutral and basic (alkaline) soils. It can grow in semi-shade (light woodland). It prefers moist or wet soil.

Synonyms

Collinsonia cuneata. Collinsonia decussata. Collinsonia ovalis. Pleuradenia praecox.

Habitats

Woodland Garden Dappled Shade; Shady Edge; Bog Garden;

Edible Uses

None known

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.

Alterative;  Antispasmodic;  Diaphoretic;  Diuretic;  Sedative;  Tonic;  Vasodilator;  Vulnerary.


The whole plant, but especially the fresh root, is alterative, antispasmodic, diaphoretic, diuretic, sedative, tonic, vasodilator and vulnerary[4, 21, 46, 102, 165]. A tea made from the roots is strongly diuretic, it is valuable in the treatment of all complaints of the urinary system and the rectum and is used in the treatment of piles, indigestion, diarrhoea, kidney complaints etc[4, 222]. It has proved of benefit in the treatment of irritable bowel syndrome, mucous colitis and varicose veins[254]. The root is seldom used on its own but is contained in remedies with other herbs, especially Aphanes arvensis, Eupatorium purpureum and Hydrangea arborescens[238]. The roots contain more than 13,000 parts per million of rosmarinic acid, the same anti-oxidant that is found in rosemary[222]. The fresh leaves are strongly emetic[222]. Some caution is advised, see notes above on toxicity[222]. A poultice of the leaves or roots is applied to burns, bruises, sores, sprains etc[4, 222, 254].

Other Uses

None known

Cultivation details

Prefers a sandy peat in a moist situation but it is easily grown in ordinary garden soils[1] so long as they are not dry[200]. Prefers dappled shade[200]. The whole plant has a strong disagreeable odour and a pungent spicy taste[4]. Another report says that the foliage is strongly aromatic, with a lemon scent[238].

Propagation

Seed - best sown as soon as it is ripe in a cold frame. The seed can also be sown in the spring, though it might be slower to germinate. Prick out the seedlings into individual pots when they are large enough to handle and grow them on in light shade in a greenhouse or cold frame. Plant them out in spring or early summer of their second year. Division in spring[1].

Other Names

If available other names are mentioned here

Found In

Countries where the plant has been found are listed here if the information is available

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

 

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Expert comment

Author

L.

Botanical References

43200

Links / References

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

Readers comment

pete jones   Sat May 27 2006

A decent natural cure for hemmoroids!

Fred Gates   Thu Oct 18 2007

Fresh leaves crushed and applied to your body or clothing makes you invisible to biting insects. That is why it is called citronella. Fred Gates

ken   Tue Apr 1 2008

I think it is miraculous cure for hemorrhoids, serious. Even for chronic cases.

Peter   Sun Apr 26 2009

It's great for sinus infections as it positively impacts the entire mucous membrane system (mouth to down there)

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Subject : Collinsonia canadensis  
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