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Rhus vernix - L.
                 
Common Name Poison Sumach
Family Anacardiaceae
USDA hardiness 3-7
Known Hazards This plant contains toxic substances and skin contact with it can cause severe irritation to some people[11]. The sap is extremely poisonous[11]. The sap contains 3-N pentadecycatechnol. Many people are exceedingly sensitive to this, it causes a severe spreading dermatitis. The toxins only reach the skin if the plant tissues have been damaged, but even indirect contact can cause severe problems[200].
Habitats Wooded swamps, often inundated for part of the year[4, 43, 82].
Range Eastern N. America - Maine to Vermont and Ontario, south to Florida, Missouri and Louisiana.
Edibility Rating  
Other Uses  
Weed Potential No
Medicinal Rating  
Care
Fully Hardy Moist Soil Wet Soil Full sun

Summary

Rhus vernix Poison Sumach


http://commons.wikimedia.org/wiki/File:Rhus_vernix_Ypey40.jpg
Rhus vernix Poison Sumach
USDA Plant Database
   
Physical Characteristics
 icon of manicon of shrub
Rhus vernix is a deciduous Shrub growing to 3 m (9ft 10in).
It is hardy to zone (UK) 3 and is not frost tender. It is in flower in July, and the seeds ripen from Sep to November. The flowers are 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) and are pollinated by Bees.The plant is not self-fertile.
Suitable for: light (sandy), medium (loamy) and heavy (clay) soils and prefers well-drained soil. Suitable pH: acid, neutral and basic (alkaline) soils. It cannot grow in the shade. It prefers moist or wet soil.

Synonyms
R. venenata. Toxicodendron vernix. (L.)Shafer.

Habitats
Woodland Garden Sunny Edge; Dappled Shade; Bog Garden;
Edible Uses
Edible Parts: Oil.
Edible Uses: Oil.

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.

Febrifuge;  Miscellany;  Skin.

Poison sumach has occasionally been used medicinally, though it is an extremely poisonous plant and great caution should be exercised. Any herbal use should only be undertaken under the supervision of a qualified practitioner. See also the notes above on toxicity. The plant has been used in the treatment of fevers, ague, ulcerated bladder, asthma and wasting diseases[257]. The plant has been used as a wash to treat foul ulcers[257].
Other Uses
Dye;  Ink;  Miscellany;  Mordant;  Oil;  Varnish;  Wood.

The leaves are rich in tannin. They can be collected as they fall in the autumn and used as a brown dye or as a mordant[169]. An oil is extracted from the seeds[4]. It attains a tallow-like consistency on standing and is used to make candles. These burn brilliantly, though they emit a pungent smoke[4]. An indelible black ink can be made from the sap[226]. A varnish is obtained from the sap, it is black, lustrous and durable[19, 82].The final product is toxic[226]. Wood - light, soft, coarse grained[82]. It weighs 27lb per cubic foot[235].
Cultivation details
Succeeds in a well-drained fertile soil in full sun[11, 200]. Requires a moist soil[14]. The young growth in spring can be damaged by late frosts. Plants have brittle branches and these can be broken off in strong winds[200]. Plants are also susceptible to coral spot fungus[11]. Plants in this genus are notably resistant to honey fungus[200]. Many of the species in this genus, including this one, are highly toxic and can also cause severe irritation to the skin of some people, whilst other species are not poisonous. It is relatively simple to distinguish which is which, the poisonous species have axillary panicles and smooth fruits whilst non-poisonous species have compound terminal panicles and fruits covered with acid crimson hairs[1, 4]. The toxic species are sometimes separated into their own genus, Toxicodendron, by some botanists[200]. Dioecious. Male and female plants must be grown if seed is required.
Propagation
Seed - best sown in a cold frame as soon as it is ripe. Pre-soak the seed for 24 hours in hot water (starting at a temperature of 80 - 90c and allowing it to cool) prior to sowing in order to leach out any germination inhibitors[200]. The stored seed also needs hot water treatment and can be sown in early spring in a cold frame[200]. When they are large enough to handle, prick the seedlings out into individual pots and grow them on in the greenhouse for their first winter. Plant them out into their permanent positions in late spring or early summer, after the last expected frosts. Cuttings of half-ripe wood, 10cm with a heel, July/August in a frame[200]. Root cuttings 4cm long taken in December and potted up vertically in a greenhouse. Good percentage[78, 200]. Suckers in late autumn to winter[200].
Other Names
Found In
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 NameEdibility RatingMedicinal Rating
Rhus ambigua 00
Rhus aromaticaLemon Sumach, Fragrant sumac42
Rhus chinensisChinese Gall, Chinese sumac23
Rhus copallinaDwarf Sumach, Winged sumac, Flameleaf Sumac, Winged Sumac, Shining Sumac42
Rhus coriariaElm-Leaved Sumach, Sicilian sumac21
Rhus diversilobaWestern Poison Oak, Pacific poison oak02
Rhus glabraSmooth Sumach43
Rhus integrifoliaLemonade Berry, Lemonade sumac20
Rhus microphyllaDesert Sumach, Littleleaf sumac20
Rhus ovataSugar Bush, Sugar sumac21
Rhus potaninii 02
Rhus punjabensis 32
Rhus punjabensis sinica 32
Rhus radicansPoison Ivy01
Rhus sempervirens 21
Rhus succedaneaWax Tree12
Rhus sylvestris 00
Rhus toxicodendronEastern Poison Oak02
Rhus trichocarpa 00
Rhus trilobataSkunk Bush, Basketbush, Squawbush, Three Leaf Sumac42
Rhus typhinaStag's Horn Sumach, Velvet Sumac, Staghorn Sumac42
Rhus wallichii 01
Rhus x pulvinata 42
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Subject : Rhus vernix  

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