Updated: July 22, 2023

Sensitivity plants, also known as touch-me-nots or mimosa pudica, are fascinating plants that have the unique ability to respond to touch or external stimuli. They belong to the family Fabaceae and are native to Central and South America. Sensitivity plants have delicate leaves that fold inward or droop when touched, giving them a distinctive characteristic.

There are several different types of sensitivity plants, each with its own unique features and growing requirements. In this article, we will explore some of the most common types of sensitivity plants and learn more about their characteristics.

1. Mimosa Pudica

Mimosa pudica is the most well-known type of sensitivity plant. It is often grown as a houseplant due to its fascinating leaf-folding ability. When the leaves are touched or exposed to heat, they instantly fold inward and droop, giving the appearance of a wilted plant. This response is an evolutionary adaptation that helps protect the plant from potential threats.

Mimosa pudica has beautiful pinkish-purple flowers that bloom in clusters. It requires bright indirect light and regular watering to thrive. It is important not to overwater the plant as it can be susceptible to root rot.

2. Neptunia Oleracea

Neptunia oleracea, also known as water mimosa or sensitive neptunia, is another type of sensitivity plant. It is a semi-aquatic perennial herb that grows in wetland areas. Unlike Mimosa pudica, Neptunia oleracea does not have the same leaf-folding response but instead exhibits sensitivity through its movement in water.

When submerged in water, the leaves of Neptunia oleracea move and close together, creating a protective barrier against potential threats. This movement is believed to be a defense mechanism against herbivores and aquatic predators.

Neptunia oleracea requires a consistently moist environment and is often grown in water gardens or aquariums. It can be propagated through seeds or cuttings.

3. Desmodium Gyrans

Desmodium gyrans, commonly known as the telegraph plant, is a unique type of sensitivity plant that exhibits movement in response to light. Unlike other sensitivity plants that respond primarily to touch, Desmodium gyrans has small leaflets that move up and down in rhythm when exposed to light.

The movement of Desmodium gyrans is similar to the Morse code, hence the name “telegraph plant.” This unique characteristic has fascinated botanists for many years and continues to be studied for its underlying mechanisms.

Desmodium gyrans requires bright indirect light and regular watering. It is often grown as a houseplant or in outdoor gardens with partial shade.

4. Biophytum Sensitivum

Biophytum sensitivum, also known as the little tree plant or sensitive plant, is a small herbaceous plant that belongs to the sensitivity plant family. It is native to tropical regions of Asia and Africa.

Biophytum sensitivum displays sensitivity through its movement and leaf-folding response when touched or exposed to external stimuli. The leaflets fold upward and droop when touched, similar to other sensitivity plants.

This plant requires bright indirect light and regular watering to thrive. It is often grown as a houseplant or as part of a terrarium due to its compact size.

Conclusion

Sensitivity plants are fascinating botanical wonders that showcase nature’s incredible adaptability. Mimosa pudica, Neptunia oleracea, Desmodium gyrans, and Biophytum sensitivum are just a few examples of the different types of sensitivity plants that exist.

Whether it’s through leaf-folding, movement in water, or response to light, these plants have evolved unique mechanisms to protect themselves from potential threats. Understanding the characteristics and growing requirements of sensitivity plants can help plant enthusiasts appreciate and care for these remarkable plants in their own homes or gardens.