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Dieffenbachia

life science Maturity 7-9 Next article →

Dieffenbachia is a genus of tropical flowering plants. They belong to the Araceae family. These perennial herbaceous plants are native to the New World Tropics. This region includes areas from Mexico and the West Indies down to Argentina. Many people grow them as ornamental houseplants. They are popular because they can tolerate shade well. Their straight stems and leaves with white spots make them very attractive.

Dieffenbachia inflorescence
Dieffenbachia inflorescence

The plant has a unique chemical defense system. Inside the cells are tiny, needle-shaped crystals. These crystals are called raphides and are made of calcium oxalate. If a person or a pet chews a leaf, these needles are released. This causes a temporary burning sensation and erythema, which is redness of the skin. It can also cause edema, or swelling, in the exposed tissues. Most people only experience mild symptoms from eating them. However, the effects can include intense numbing and excessive drooling.

Dieffenbachia cross section
Dieffenbachia cross section

Because of these effects, the plant has several common names. One name is "dumb cane." This refers to the temporary inability to speak caused by the irritation. Another name is "mother-in-law's tongue." This name is also sometimes used for Sansevieria species. While these names sound scary, they are often urban legends. Stories that the plant is a deadly poison are not true. Most cases can be treated with antihistamines, analgesics, or medical charcoal.

Dieffenbachia cross section
Dieffenbachia cross section

Scientists have studied how these plants live in the wild. In Costa Rica, researchers noticed a link between the plant and animals. The strawberry poison frog, known as Oophaga pumilio, relies on Dieffenbachia. The frogs deposit almost 89% of their tadpoles in the leaf axils. This means the frog population changes based on how many plants are around. In the La Selva Biological Station, the plant population changed quickly. By 2012, only 28% of the plants from 2002 were still there.

Dieffenbachia inflorescence
Dieffenbachia inflorescence

This decline in plants was caused by an animal called the collared peccary. The collared peccary is a small, pig-like animal. These animals feed on Dieffenbachia and other plants in the forest. This shows how one animal can affect an entire ecosystem. When the peccaries became more abundant, the plants decreased. This cycle shows how closely plants and animals are connected in nature.

History tells us how the plant received its scientific name. Heinrich Wilhelm Schott named the genus. He was the director of the Botanical Gardens in Vienna. He chose the name to honor his head gardener, Joseph Dieffenbach. Joseph Dieffenbach lived from 1790 to 1863. Today, there are about 60 recognized species in this genus. Some specific varieties are very famous. The cultivars 'Camille' and 'Tropic Snow' have won the Royal Horticultural Society's Award of Garden Merit.

Dieffenbachia inflorescence
Dieffenbachia inflorescence

Growing Dieffenbachia at home requires specific care. They need warm temperatures and filtered sunlight. They do best in moderately moist, well-aerated soil. Some experts say they need water about twice a week. If the leaves turn yellow, it might mean the soil lacks nutrients. You might see old leaves roll up and fall off. This is a normal process to make room for new growth.

Dieffenbachia cross section
Dieffenbachia cross section
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File:Dieffenbachia inflorescence.jpg
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File:Dieffenbachia cross section.jpg
Dieffenbachia cross section.jpg
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