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Conservatory Info
Conservatory Info

8 Plants You May Not Want in Your Conservatory (Part 1 of 2)


Roses are red, violets are blue, other flowers should never be ingested by you. So when you decide to use your conservatory as a greenhouse or an indoor garden, be mindful of the plants you want to grow because some are dangerous when accidentally eaten by curious or mistaken jaws.




This evergreen shrub is known as a pest in many parts of Europe because of its invasive nature. Still, it's red, white, pink, or purple flower clusters make it seem like a perfect addition to any greenhouse. However, its flowers are as beautiful as deadly. Ingesting any part of this plant can lead to death but only after it causes drooling, excessive tearing, and low blood pressure. Even honey collected from rhododendron flowers are toxic enough to cause dizziness, weakness, excessive perspiration, nausea, and vomiting among others.





Aside from its sweet smell, the lily-of-the-valley's bell-shaped flowers can add charm to any garden. Young girls might particularly like this plant as it's not very difficult to imagine fairies hiding under the white petals. It would be best to keep this out of any child's reach, however, because every part of this lovely plant is toxic. Ingesting this plant can cause headaches, hallucination, irritability, and red blotches on the skin. But it can also lead to coma or death following heart failure and slow pulse rate.





Hydrangeas are commonly used in weddings because of their elegance and beauty. The flowers come in various and vivid colours, making them a great addition to any bouquet or garden. However, these gorgeous flowers are also the most poisonous part of the hydrangea shrub. Hydrangeas contain a particular cyanogenic glycoside, which releases cyanide when raw plant material is chewed on. Cyanide poisoning can cause difficulty in breathing and headache followed by coma and then eventually cardiac arrest even at low doses.





This tall plant with pink, red, purple, and white drooping flowers not only adds height to your garden but also attracts bees. Just be sure not to attract anyone into eating any part of this plant especially leaves of the upper stem because these contain deadly chemicals, which may cause death at high doses.


Knowing how to distinguish non-toxic and toxic plants from each other will help you determine where you should grow these plants if you decide to have them in your conservatory. Watch out for our next post for other plants you may not want in your conservatory and visit This Old House for the full list of deadliest garden plants.

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