Cactus: Key Characteristics, Habitat, Uses and Interesting Facts

A cactus is not like any other plant you will find in your garden. It grows in hot deserts, rocky lands and dry hillsides where most plants cannot survive. It has no flat leaves. It has spines instead. It stores its own water inside its thick stem and can go weeks without a single drop of rain. Some cactus plants live for over a hundred years. They come in all shapes and sizes and they are found in many parts of the world. There is truly a lot to know about this tough and fascinating plant.

Table of Contents:

• What Exactly is a Cactus
• Where do Cactus Plants Grow
• How does a Cactus Live Without Water
• Interesting Facts about Cactus
• Why Are Cactus Plants Useful

What Exactly is a Cactus

A cactus is a plant that belongs to a group called Cactaceae. There are more than 1,700 types of cactus in the world. They come in all shapes and sizes, some are short and round like a ball, some grow tall like a tree and some even hang down like a vine. Most cactus plants grow in deserts. But they are not all the same. Each type is a little different in the way it looks and the place it grows.

Where do Cactus Plants Grow

Cactus plants are mostly found in North and South America. Mexico and the dry parts of the United States are home to many well-known types of cactus. Some species also grow in parts of Africa. In India, you will often see cactus plants in gardens and homes. People keep them as decorative plants. They also grow on dry, rocky hillsides in some parts of the country. They are not originally from India, but they grow well here because of the warm weather.

How does a Cactus Live Without Water

This is the most interesting thing about a cactus. It saves water inside its thick, fleshy stem. When it rains, the plant soaks up as much water as it can. It holds that water for weeks or even months. The outer layer of the stem is waxy, so water does not escape easily. Instead of flat leaves, a cactus has spines. Flat leaves would let too much water evaporate in the heat. Spines do not lose water. They also keep animals away so they do not eat the plant. The roots of a cactus spread out wide near the top of the soil. This way, even a small amount of rain gets collected quickly before it dries up.

Interesting Facts about Cactus

Here are some facts about cactus that most people do not know:

• The saguaro cactus can grow up to 12 metres tall. That is about as high as a four-storey building.
• Some cactus plants live for more than 150 years.
• Cactus plants bloom with flowers. The flowers can be pink, red, yellow, or white. Some of them only open at night.
• The prickly pear cactus gives a fruit that people eat. It is sweet and good for your health. The flat green pads of this cactus are also cooked as a vegetable in Mexico.
• Small birds like the elf owl make their nests inside tall cactus plants. The walls of the cactus keep the nest cool even in the desert heat.
• Not every cactus is prickly. Some types have very tiny or soft spines that you can barely feel.

Why are Cactus Plants Useful

Cactus plants are very important in dry areas. They give food and shelter to many desert animals. Insects feed on their flowers. Birds live inside their stems. In places where almost nothing else grows, a cactus can be the only source of food and water for wildlife. For people, cactus plants are used as food, herbal medicine and even as garden plants. Some cactus extracts are now used in health drinks and skin care products. They also show us something worth remembering, that with the right adjustments, life can survive even in very hard conditions.