Is Boston Ivy Poisonous to Touch? What You Need to Know
Boston ivy is a popular climbing vine that is commonly used to cover walls, fences, and other structures with its beautiful green foliage But while its aesthetic appeal is undisputed, many gardeners wonder – is Boston ivy poisonous to the touch? Let’s take a closer look at this plant’s potential toxicity
What Is Boston Ivy?
The Boston ivy plant, Parthenocissus tricuspidata, is a deciduous vine that comes from China and Japan. The name comes from Boston, Massachusetts, where it was first seen in North America in the 1860s. In many parts of the U.S., you can find this quickly-growing plant on college buildings, historic homes, fences, and other places. S.
Boston ivy is adaptable to various soil types and light conditions. It attaches itself to surfaces with small root-like holdfasts and requires no structural support. The leaves are green and shiny in the summer, turning vibrant red in the fall. After the leaves drop in winter, bluish-black berries appear on the vines.
While visually striking, Boston ivy does come with some concerns. Read on to find out whether it poses any risks with direct skin contact.
Is Boston Ivy Poisonous to Touch?
The short answer is yes, Boston ivy can irritate the skin if it is touched. Naturally occurring chemicals like saponic glycosides, oxalates, and cardenolides are found in the whole plant. Some people can have an allergic reaction when they come into contact with the sap, leaves, stems, or berries.
Most Common Reactions
For many people, touching Boston ivy results in only minor irritation at most. Symptoms may include:
- Slight redness
- Itching
- Small rashes
However, those with particularly sensitive skin or known plant allergies should use extra caution around this vine. They are at higher risk for more severe reactions involving:
- Significant swelling
- Blistering
- Extreme itching/discomfort
In rare cases, contact with Boston ivy or its sap has also been known to cause anaphylaxis – a potentially life-threatening allergic response. But this is very uncommon. For most people, Boston ivy touching leads to mild skin inflammation at worst.
What Parts Are Most Irritating?
The most concerning parts of the Boston ivy plant are:
- Sap
- Leaves
- Stems
- Berries
The sap and tiny hairs found on the stems and leaves provoke the majority of adverse skin reactions. Even brushing lightly against the plant can elicit redness, itching, and rashes in sensitive individuals.
Safety Precautions When Handling Boston Ivy
Even though Boston ivy isn’t usually dangerous, it’s still a good idea to be careful when working near it to avoid skin irritation:
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When you prune or handle the vines, you should wear gloves, long sleeves, pants, and goggles. This makes a wall against the irritating substances in the plant cells and sap.
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Thoroughly wash any exposed skin after contact using soap and cool water. Promptly removing sap or residue helps prevent rashes.
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Teach children not to touch or eat any part of the plant. Kids are at higher risk of reaction due to their sensitive skin.
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Keep pets away from lower hanging vines they could reach. Boston ivy may cause stomach upset if eaten.
With sensible precautions, you can safely enjoy the beauty of a Boston ivy covered wall or fence without suffering bothersome allergic responses.
Treating Boston Ivy Rashes
If you do develop an itchy rash from handling Boston ivy, treat it like you would poison ivy:
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Clean the area immediately with soap and cool water to remove any lingering sap or irritants.
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Apply a cold compress, calamine lotion, or hydrocortisone cream to relieve itching and swelling.
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For severe reactions, take an oral antihistamine containing diphenhydramine to reduce inflammation.
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See a doctor for dangerous symptoms like trouble breathing, widespread hives, or extensive blistering. You may need oral steroids.
With prompt treatment, most Boston ivy rashes resolve within a few days. Avoid scratching as this can worsen irritation and risk infection. Be vigilant about protecting your skin when working around this vine going forward.
Safer Ivy Alternatives
If you want to avoid Boston ivy’s poisonous risks, consider these safer ivy alternatives that offer similar aesthetic appeal:
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Virginia creeper – Gorgeous red fall color without irritating sap. Ensure you choose the native variety.
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English ivy – No harsh chemical irritants. Can develop rashes in some when pruning.
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Clematis – Showy flowering vines perfect for trellises. Handle well without sap issues.
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Climbing hydrangea – Provides beautiful blooms and fall foliage without toxicity concerns.
Do some research to find the right non-irritating ivy alternative for your specific landscaping needs and growing conditions. With the proper replacement, you can achieve the look you want without Boston ivy’s bothersome skin effects.
The Bottom Line
While not severely poisonous, Boston ivy can cause redness, swelling, blisters, and rashes when touched by sensitive individuals. To enjoy its benefits without the itchy reaction, take sensible precautions when handling and prune only when covered. For a worry-free alternative, consider less irritating ivy vines. Just be aware of any potential toxicity before planting. Your skin will thank you!
Learn about more poisonous plants and fungi
Ivy doesnt harm the trees it climbs.
Credit: John Bridges / WTML Quick fact
Many people believe that ivy hurts trees, but the truth is that it doesn’t.
Benefits of ivy to wildlife
Ivy has a lot of value for wildlife, supporting more than 50 different species. Its especially important as an essential food source for insects and birds during the autumn and winter months.
- Birds love to nest in evergreen leaves, and insects, bats, and other small mammals use them as shelter.
- It starts to bloom at the end of August and is a good place for animals like bees, wasps, and hoverflies to get late-season nectar.
- When they ripen in the fall and winter, black ivy berries are very high in fat and birds like blackbirds love them.
If you dont have any ivy at home, find a wood nearby and look out for the plant climbing other shrubs and trees. Youll likely find it alive with insects and other wildlife.
Ivy is especially important for some insects before they go into hibernation.
Credit: Rosey Norton / WTML
Is Boston Ivy poisonous? Boston Ivy vs. English Ivy vs. Poison ivy vs. Virginia creeper
FAQ
Is Boston ivy poisonous to the touch?
Boston Ivy, while not as notorious as poison ivy, can still be a skin irritant. The main culprits are the sap and the tiny hairs on the stems and leaves. If your skin brushes against these parts, you might find yourself with an itchy rash. Symptoms to watch for include redness, swelling, and those telltale blisters.
What happens if I touch ivy?
First comes the itching, then a red rash, and then blisters. If you get poison ivy, poison oak, or poison sumac, these signs can show up anywhere from a few hours to a few days after touching the plant oil in the sap of these poisonous plants. The culprit: the urushiol oil. Here are some tips to avoid it.
What is the difference between Boston ivy and poison ivy?
Boston ivy and poison ivy are often confused because both can be climbing vines with leaves of three, but they are distinct plants. Some people may get skin irritations from Boston ivy, which is also known as Parthenocissus tricuspidata. It is not poisonous, though.
Are ivy leaves poisonous to touch?
Poison ivy, poison oak and poison sumac are all very common poisonous plants. Touching any of these plants can result in an irritating, itchy skin rash.