Carex(Sedges) Plant: Care & Growing Guide

Carex is sedges, grass-like plants that are usually found in wetlands. Although from the same family, carex is a perennial plant that can be grown indoors, unlike grasses. There’s an old saying that helps when it comes to differentiating them: ‘sedges have edges’ rushes are round, and grasses are hollow right up from the ground.

Carex is an annual grass-like plant native to North America. It has long slender leaves and stems which can be up to 30 inches tall. The flowers are small and white. There are many different species of carex. One species grows along streams and lakes. This is the most common type of carex found in Southern California. Another species grows in dry areas. A third species grows in wet places.

The Carex genus includes about 150 species of herbaceous perennial plants. Most species occur in temperate regions of the northern hemisphere but some extend southward into tropical areas. Sedges are annual herbs growing from rhizomes. Their leaves are basal, erect, and often branched. Each leaf blade is divided into two leaflets that are opposite each other. The inflorescence consists of one or more spikelets. The spikelets contain several flowers arranged in a cluster at the apex of the spike. The flowers are small, bisexual, and radially symmetrical.

  • Common Name– Carex
  • Botanical Name– c. morrowii
  • Family– Cyperaceae
  • Light– Partial shade
  • Soil– Garden soil
  • Water– Keep the soil moist but not wet.
  • Fertilizer– Balanced fertilizer
  • Problems– Rare
  • Propagation– Root ball division
  • Native Area– Central America, South America

Carex(Sedges) Plant Care

Carex is an important group of plants. It includes many species of grasses, sedges, rushes, and other plants. Most of the plants in this group have long stems which can be up to six feet tall.

Many of the plants have leaves that look like blades of grass. Others have leaves shaped like reeds. All of the plants need water but some do better than others. Sedges and rushes will grow well if you give them plenty of water.

Grass needs less water. You should keep your lawn watered during dry periods. If it gets too much water, the grass will get soggy. This makes it difficult for the roots to absorb nutrients from the soil. When the weather turns cold, cut back on watering your lawn. Watering only once every two weeks is enough. After the first frost, stop watering completely. Wait until spring before you start again.


When you plant Sedges in your garden, make sure to place the roots about 1 inch deep in moist soil that is rich in humus and has plenty of sunlight. The plant will need bright sun and lots of water during its growing period. Once mature, your plant should be placed in a sunny spot but out of direct sunlight.


Organically rich soil, Carex does well indoors. In a bright, warm, and humid environment. If you live in an arid environment, place them on pebble trays and group them with other plants. They are easy-going plants that add a splash of color to any space.


Carex plants need to be watered regularly. If you do not water your plants enough, they will die. You can tell if your plants need more water by looking at their leaves. When the leaves appear dry and crumpled, it is probably time to give the plants some water. However, too much water could cause the roots of your plants to rot.

Humidity and Temperature

It grows well in containers and can be used to make landscaping materials. Plants need moisture, air, light, and warmth to survive. If you keep your plants too wet, they will rot. If you do not give them enough water, they will wilt.

Too much heat can cause plants to get sunburned. They also need air circulation to breathe properly. You should try to maintain a constant level of moisture and warmth for each container. Watering needs to change depending on the type of soil your plants are in. You must check the soil daily to see if it is moist enough.

Check the leaves of the plant first. Then look at the roots. If they are dry, add some more water. If there is no sign of moisture, let the pot sit out in the sun until the leaves become turgid. Be careful that you don’t overdo it! Do not leave the pots outside overnight. After several hours, put them back inside.


The plants need fertilizer to thrive. Use a liquid fertilizing solution made from a mixture of fish emulsion and water. Read label directions carefully before using. Mix one part fish emulsion with three parts water. Add a few drops of dish soap if needed.

Apply fertilizer at the recommended rate by spraying it directly onto the leaves and stems. Do not use too much fertilizer; over-fertilization will cause wilting. Water regularly.

Potting and Repotting

Carex (sedges) plants need repotting every two years. Sedges can be grown from seedlings indoors if you live where it is cold enough to do so. If you live in an area where your soil stays warm all year long, you can buy potted sedge plants. You will want to pot your sedges in compost-rich soil such as peat moss or sphagnum moss.

Do not let the roots dry out. Water deeply and infrequently. When the leaves start to die back, cut off the dead parts and repot the remaining healthy ones. To keep the roots moist, place a saucer beneath the container.

Remove any old stems before replanting the with new stems. After the first winter, remove the top half inch of the root ball and replace the soil mixture with fresh soil. This will help prevent disease problems. In some areas, sedges are prone to fungal diseases. Check your local nursery to see whether they sell special fungicides for use against these types of diseases. Do not fertilize until spring. Fertilizers should be applied at about the same rate used for houseplants.


Prune Sedges to keep them from getting too large. Cut back the tops of the sedge plants so you can see their growth pattern. Remove all dead stalks and leaves. If your soil is sandy, add some organic matter such as peat moss. Water well until new growth begins. Keep pruned Sedges watered during dry periods.


This is a simple propagation method for sedge plants. You will need to collect seed from an existing specimen or buy it at a local nursery. Then you can start your own collection. When you first sow the seeds, some will germinate immediately. If you keep the soil moist, most of the remaining seeds should sprout within two weeks. In a few months, you will have a large number of healthy plants ready to be planted out into their permanent home.

Common Pests and Diseases

Carex can be affected by many pests and diseases. Many plant diseases can kill plants easily. Other problems include slugs, snails, aphids, whiteflies, and weeds. A few insects also cause trouble for Carex.

The plant is susceptible to many different types of pests and diseases. Sometimes just one pest can cause big damage to your plants. For example, slugs eat the leaves of

Slugs are not very good at it because the roots of the plant keep moving around, so they cannot get close to enough food. However, if you do not control the problem, you will lose all of your plants.


How many species of Carex are there?

There are about 300 different kinds of Carex. It is one of the largest genera of plants. Most Carexes flower from May through October. This family includes sedges, rushes, grasses, mosses, ferns, and horsetails.

Where is Carex native to?

Carex is a genus of plants that grow in cold climates. There are about 100 species of Carex. Most of them live where there is snow all winter long.