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Digitaria

life science Maturity 11-13 Next article →

Digitaria is a group of plants in the grass family. These plants grow in warm and tropical places. Some also live in cooler areas. You might know them by other names. People call them crabgrass, finger-grass, or fonio. The name Digitaria comes from the Latin word digitus. This word means finger. This is because the plants have long parts that look like fingers.

Large-crabgrass-11258-seedhead2
Large-crabgrass-11258-seedhead2

Many of these grasses are very useful for food. The seeds of fonio are very important. Fonio includes species like Digitaria exilis and Digitaria iburua. These are staple crops in many parts of Africa. People can eat the seeds in several ways. They can toast the seeds for a snack. They can also grind them into a fine flour. Some people make porridge or even beer from them.

Large-crabgrass-11258-seedhead2
Large-crabgrass-11258-seedhead2

In North America, some species can be tricky. Large crabgrass is also called hairy crabgrass. Another type is called smooth crabgrass. These plants often grow in lawns and gardens. They are considered weeds by many people. They grow best in lawns that are thin. They like spots with little water or fertilizer. They also like soil that does not drain well.

Large-crabgrass-11258-seedhead2
Large-crabgrass-11258-seedhead2

Crabgrass has a very fast way of growing. One single plant can make 150,000 seeds in one season. The seeds start to grow in late spring. They spread out in a wide circle. They grow faster than the grass in a healthy lawn. In the autumn, these plants die off. This leaves large empty spots in the grass. These spots are perfect for new seeds next year.

Large-crabgrass-11258-seedhead2
Large-crabgrass-11258-seedhead2

It is helpful to know how to care for a lawn. Using chemicals to kill weeds is one way. However, biological control is often a better choice. Crabgrass is often a sign of a weak lawn. It shows that the lawn needs more water. It also shows that the lawn needs more fertilizer. A healthy lawn can outcompete the crabgrass. This happens because the crabgrass dies every autumn.

Large-crabgrass-11258-seedhead2
Large-crabgrass-11258-seedhead2
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File:Large-crabgrass-11258-seedhead2.jpg
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