Why Won't My Amazon Sword Grow?

Amazon Sword not growing! Aquariums
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What is an Amazon Sword?

The Amazon Sword (Echinodorus grisebachii) is an aquatic plant native to the Amazon River Basin in South America. It is a popular aquarium plant, often found in aquariums around the world. It is an easy-to-care-for, hardy plant that can reach heights of up to 24 inches, and it features eye-catching, grass-like leaves.

Why Won't My Amazon Sword Grow?

If you’re having trouble getting your Amazon Sword to grow, the first thing you should do is make sure it’s getting the right environment. The Amazon Sword is a tropical plant that does best in water temperatures between 72 and 82 degrees Fahrenheit. If the water temperature is too low, the plant won’t be able to photosynthesize and grow. Additionally, Amazon Swords need plenty of light to grow; they should be kept under full-spectrum lighting for 10 to 12 hours each day.

Proper Nutrition

The Amazon Sword needs proper nutrition to grow. It’s important to provide the plant with the right balance of macronutrients, like nitrogen, phosphorus, and potassium. Too much or too little of any of these can stunt the plant’s growth. The Amazon Sword also needs micronutrients, like iron, magnesium, and zinc, to stay healthy. The best way to ensure your Amazon Sword is getting all the nutrients it needs is by fertilizing the water with a liquid fertilizer. This should be done every two weeks.

Proper Pruning

Pruning is essential for the Amazon Sword to grow properly. Pruning helps the plant to grow in a healthy, attractive way and it can also help to prevent the spread of disease and pests. Pruning should be done every two to three weeks, and it should involve removing any yellow, brown, or dead leaves, as well as any overgrown parts of the plant. This will help to encourage new growth and keep the plant looking its best.

Good Substrate

The substrate, or soil, in the aquarium is also important for the Amazon Sword to grow. The substrate should be rich in organic matter, like peat moss, and it should have a pH between 6.5 and 7.5. Additionally, the substrate should be deep enough to allow the roots to grow, usually at least 8 inches deep. A good substrate will help to provide the plant with the nutrients it needs to thrive.

Planting Depth

When planting the Amazon Sword, make sure to plant it at the right depth. The roots should be completely covered, but the crown of the plant should not be buried. If the crown is buried, it can lead to the plant rotting and it won’t be able to get the oxygen it needs to grow. The plant should also be anchored in the substrate so it doesn’t float away.


If you have other plants in the aquarium, they could be competing with the Amazon Sword for nutrients, light, and space. It’s important to make sure the Amazon Sword is getting enough of all three to grow. If you have other plants that are growing faster than the Amazon Sword, you may need to trim them back or re-arrange the plants in the aquarium to give the Amazon Sword more space.

Pests and Diseases

Pests and diseases can also stunt the growth of the Amazon Sword. If you see any signs of pests or disease, like yellowing or browning leaves, treat the plant immediately. This can help to prevent the spread of the problem to other plants in the aquarium. It’s also important to keep the aquarium clean to reduce the risk of pests and diseases.


If your Amazon Sword isn’t growing, the first thing you should do is make sure it’s getting the right environment. It needs the right temperature, plenty of light, proper nutrition, and a good substrate to thrive. Additionally, you should make sure the plant is planted at the right depth and that it’s not competing with other plants in the aquarium. Finally, watch out for pests and diseases, and treat any problems immediately. With the right care and attention, your Amazon Sword will soon be growing strong and healthy.


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