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Poison- Ivy

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					                                                                                  H ealth
                                                                                  C anada
                                                                                            S anté
                                                                                            C anada                                             Description                         The plant produces clusters of cream to yellow-
                                                                                                                                                                                    green inconspicuous flowers during the months
                                                                                                                                                                                                                                         the skin. If soap is not available, vinegar (2
                                                                                                                                                                                                                                         tablespoons in 1 cup of water) or alcohol (1/2
                                                                                                                                                                                                                                                                                                Any clothing worn while working in or near
                                                                                                                                                                                                                                                                                                poison-ivy should be carefully removed, washed
                                                                                                                                                                                    of June and July. The berries that appear by         cup to 1/2 cup of water) can be substituted.           in hot, soapy water, and hung outside to dry for
                                                                                                                               Poison-ivy (Rhus radicans L.) is a climbing          September are clustered, globular, waxy, and                                                                several days. Remember to wear gloves while


                                                                                  Effective
                                                                                                                               plant of the sumac family and can be found in        green-to-yellow in colour. The size of the berries   It is important to note that these practices may       handling objects that may be contaminated. Do
                                                                                                                               every province except Newfoundland. It grows         ranges from 3 to 7 mm in diameter. They often        not prevent a reaction, but will likely prevent the    not wash clothing suspected of contamination
                                                                                                                               on sandy, stony or rocky shores, sprouts in          remain on the low, leafless stems of the plant all   infection from spreading.                              with other laundry in order to avoid any further
                                                                                                                               thickets, in clearings and along the borders of      winter.                                                                                                     contamination. Repeated washing may be
Pest Note Pest Note Pest Note Pest Note Pest Note Pest Note Pest Note Pest Note




                                                                                                                               woods. This glossy perennial can spread by seed


                                                                                  Control
                                                                                                                                                                                                                                         If a reaction does develop, one should seek the        necessary.
                                                                                                                               or by producing shoots from its extensive                                                                 advice of a physician for proper treatment. Skin
                                                                                                                               underground stems (rhizomes).                                                                             irritation (itching, red inflammation, blistering of   Cultivation
                                                                                                                                                                                                                                         the skin and, in severe cases, oozing sores)           For effective control of poison-ivy, the
                                                                                                                               The sap of the plant contains an oily resin that                                                          resulting from exposure to poison-ivy normally         reproductive capacities of the plant can be


                                                                                  of
                                                                                                                               causes an irritating inflammation of the skin in                                                          disappears in a week to 10 days.                       disrupted by destroying its roots and stems. By
                                                                                                                               most people. All parts of the plant, including the                                                                                                               digging out and hand picking the roots and stems,
                                                                                                                                                                                    Aerial Vine                 Trailing Vine
                                                                                                                               roots, contain this poisonous resin. Most people
                                                                                                                               develop symptoms 24 to 48 hours after contact.                                                                           Similar Plants                          and working the soil frequently, the ability of the
                                                                                                                                                                                                                                                                                                plant to produce shoots will be minimized.




                                                                                  Poison-
                                                                                                                               The extent of a reaction depends on the
                                                                                                                               individual’s sensitivity and the amount of sap in              Effects of Poison-Ivy                      Poison-ivy is often mistaken for similar plants
                                                                                                                                                                                                                                                                                                Repeated cultivation will eventually eliminate
                                                                                                                                                                                                                                                                                                poison-ivy because the plant does not regenerate
                                                                                                                               contact with the skin.                                                                                    such as poison oak and poison sumac. These can         easily from plant fragments. Since loose seeds
                                                                                                                                                                                    The oily resin can be found in the roots, stems,     also cause Rhus-dermatitis. When in doubt, avoid       may be difficult to detect, remove any dead plant
                                                                                                                               The compound leaves of poison-ivy consist of         leaves and fruit. It causes an irritating            touching an unknown plant until it has been            material from the ground in case some seeds are
                                                                                                                               three pointed leaflets; the middle leaflet has a     inflammation of the skin, called Rhus-dermatitis     clearly identified.                                    still attached to the stems.




                                                                                  Ivy
                                                                                                                               much longer stalk than the two side ones. The        or poison-ivy dermatitis. The inflamed areas
                                                                                                                               leaflet edges can be smooth or toothed but are
                                                                                                                               rarely lobed. The leaves vary greatly in size,
                                                                                                                                                                                    frequently develop blisters which are
                                                                                                                                                                                    accompanied by intense itchiness. Contact with
                                                                                                                                                                                                                                                   Control of Poison-Ivy                        Chemical Control
                                                                                                                                                                                                                                                                                                Applying herbicides to control poison-ivy can be
                                                                                                                               from 8 to 55 mm in length. They are reddish          any broken part of the plant may cause a                                                                    effective. One single treatment may be sufficient
                                                                                                                               when they emerge in the spring, turn green           reaction in some individuals. The rash spreads by    Remember: always wear gloves.
                                                                                                                                                                                                                                                                                                but it is possible for regrowth to occur. It may be
                                                                                                                               during the summer, and become various shades         exposure to the sap and not from the sores                                                                  necessary to repeat the treatment as often as
                                                                                                                               of yellow, orange or red in the autumn.              themselves. Therefore, an individual has to          Protective Clothing                                    regrowth appears.
                                                                                                                                                                                    actually come into contact with the sap before       When working in or near poison-ivy, always
                                                                                                                               The plant stems are woody and of two kinds.          developing an allergic reaction.                     wear protective clothing to ensure that no area        Applying herbicides by spot-treatment will help
                                                                                                                               The most frequent kind grows as a trailing vine,                                                          of the skin is exposed to the sap of the plant.        to minimize the chances of the product drifting
                                                                                                                               with upright leafy stalks 10 to 80 cm high. The
                                                                                                                               second kind is an aerial vine that may climb from
                                                                                                                                                                                    Treatment in Case of Skin Contact                    Poison-ivy sap can adhere for long periods to
                                                                                                                                                                                                                                                                                                onto desirable vegetation. Herbicide spot
                                                                                                                                                                                                                                                                                                treatment is also advisable when poison-ivy is a
                                                                                                                               6 to 10 m high on trees, posts or rough surfaces.                                                         clothing, tools, and the hair coats of pets and        lawn weed.
                                                                                                                                                                                    Areas of skin that are suspected of                  livestock. Under hot, humid conditions the sap
                                                                                                                                                                                    contamination should be carefully washed with        becomes inactive in about a week. If conditions
                                                                                                                                                                                    soap and cold water. Cold water should be used                                                              Available Herbicides
                                                                                                                                                                                                                                         are dry, it can retain its harmful effect for a long
                                                                                                                                                                                    because hot water tends to open the pores of the                                                            Domestic class products available to
                                                                                                                                                                                                                                         period.
                                                                                                                                                                                    epidermal layer; the heat would increase the                                                                homeowners for the control of poison-ivy will

                                                                                                      April 1997               Types of Leaves
                                                                                                                                                                                    chances of the resin being deeply absorbed into

                                                                                                      Reformatted April 1999
usually contain one, or will consist of a mixture,                     Remember                          In Case of Accidental Poisoning
of the following active ingredients: amitrole,                                                           ä Call a poison control centre immediately and
simazine, ammonium sulfamate, glyphosate,                                                                seek medical attention.
2,4-D, mecoprop, or dicamba.                                        Before Purchasing a                  ä Take the pesticide container or label with you
                                                                    Pesticide Product                    to the emergency facility or physician.
Domestic pesticides can usually be purchased                        ä Identify the pest correctly.       ä Follow first aid statements on the label.
through garden centres or hardware stores.                          ä Use physical control methods       ä In case of accidental poisoning of
                                                                    and alternatives to pesticides.      pets seek veterinary attention
Purchase only those products whose labels            ä Read the label directions and safety              immediately.
indicate poison-ivy control.                         precautions before buying the product. The label
                                                     must include the name of the pest to be             When Disposing of Pesticides
                   Disposal                          controlled and the treatment location (e.g.,
                                                     indoor, outdoor, garden uses, pet treatment).
                                                                                                         Do not reuse empty pesticide
                                                                                                         containers. Wrap and dispose of in household
                                                     ä Purchase only the quantity of product needed      garbage.
CAUTION: DO NOT BURN POISON-IVY                      for the treatment.
as this may release the poison in the form of tiny   ä Alternatively, you may choose to hire a           Unused or partially used pesticide products
droplets carried by the ash and dust particles in    licensed pest control operator.                     should be disposed of at provincially or
the smoke. A severe reaction may occur if a                                                              municipally designated household hazardous
sensitive person inhales or is exposed to this       When Using a Pesticide                              waste disposal sites.
smoke.                                               ä Carefully read all label instructions and
                                                     precautions before using pesticides.                Use Common Sense
Dead poison ivy plants can still cause dermatitis    ä Do not drink, eat or smoke while applying         ä These are general recommendations.
and must be handled with care. Dispose of them       pesticides.                                         ä Consult the label for specific instructions.
by placing them in a garbage bag. Make sure          ä Persons and pets should vacate the area           ä When in doubt, contact a professional.
that bags containing poison-ivy remains are well     during treatment. Cover or remove aquaria.
identified and disposed of with the household        ä If kitchen area is to be treated, cover or
garbage.                                             remove food, dishes and utensils.
                                                                                                                                                            Pest Management Regulatory Agency
                                                                                                                                                            2250 Riverside Drive
Another method is to bury the remains deep into
the ground. Sufficient depth is important to
                                                     After Handling a Pesticide                                                                             Ottawa ON K1A 0K9
                                                     ä Always wash your hands thoroughly after
ensure there is no regrowth.
                                                     handling any pesticide product.                                                                        Pest Management Information Service
                                                     ä Do not permit persons or pets to contact                                                             Telephone: 1-800-267-6315
                                                     treated surfaces until residue has dried
                                                                                                                                                            From outside Canada: (613) 736-3799*
                                                     completely.
                                                     ä Provide adequate ventilation of treated areas
                                                                                                                                                            *Long distance charges apply.
                                                     after use.                                                                                             Fax: (613) 736-3798
                                                     ä Wipe clean all surfaces that comes in direct                                                         Internet: www.hc-sc.gc.ca/pmra-arla
                                                     contact with food, such as counters, tables and
                                                     stovetops, including indoor and outdoor surfaces.
                Clusters of Fruits                   ä Always store pesticides out of reach of
                                                     children and pets and away from food and
                                                     beverages.

				
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