Poisonous plants that will have you in itches
Poison ivy. Just the thought of it makes you want to scratch. Actual contact creates an incessantly itchy, red rash that can swell into blisters — all from a seemingly harmless plant loaded with an irritant known as urushiol (you-ROO-shee-all) oil. The leaves — all three of them — stems, roots, flowers, and berries contain the oil.
Also found in poison oak, urushiol is absorbed into the skin within minutes after contact. The rash can appear hours or even days later and last from one to three weeks.
Clothing, garden tools, and anything else that touches the plant can transfer urushiol to multiple areas of human skin by contact. Animals are not affected, although they can carry the oil to humans.
Both poison ivy and poison oak are common in the Highland Lakes with poison ivy being the most widespread, said Highland Lakes Master Naturalist Martelle Luedecke. Both plants are found locally as vines and shrubs. They are most often in overgrown and undeveloped areas.
An easy way to identify them is to remember this little ditty: “Leaves of three, let them be.” Both plants grow their leaves in groups of three. Poison ivy leaves have smooth or small, tooth-like edges, while poison oak leaves are fuzzy on both sides and have lobes or large, toothed edges.
The antidote for poison ivy is jewelweed.
“God, being cool like He is, places jewelweed generally right next to or in close proximity of the poison ivy,” Luedecke said.
To use jewelweed as an antidote, crush it up then rub it on areas that might have come into contact with poison ivy.
A few other home remedies for soothing poison ivy or poison oak rash include:
- After initial contact with plant, scrub the affected area with soap and water to remove the oil but do not take a bath. Bathing can transfer the oil to other areas.
- Use colloidial oatmeal in a lukewarm bath or mix it with small amounts of water to make a paste and apply to rash areas to relieve itching.
- Mix together equal parts buttermilk, salt, and vinegar. Apply it to the rash to relieve itching.
- Make a paste of baking soda and water and apply it to the affected area to relieve itching.
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