Updated: July 12, 2023

Stevia is a popular natural sweetener that has gained popularity in recent years due to its zero-calorie content and its ability to replace sugar in various food and beverage products. As more people are becoming health-conscious and seeking alternatives to sugar, stevia has become a go-to choice for many. Growing your own stevia plant can be a rewarding experience, but it’s important to understand how quickly it grows to ensure you have a steady supply of this sweet herb.

Understanding Stevia

Stevia, also known as Stevia rebaudiana, is a perennial plant native to South America. It belongs to the Asteraceae family and is related to common herbs like daisies and marigolds. The leaves of the stevia plant contain naturally occurring compounds called steviol glycosides, which are intensely sweet.

The sweetness of stevia is estimated to be 200-300 times sweeter than sugar, making it an attractive substitute for those looking to reduce their sugar intake. Additionally, stevia has a low glycemic index, meaning it does not cause a significant increase in blood sugar levels.

Germination and Early Growth

When growing stevia from seeds, germination can take anywhere from 7 to 21 days. It’s important to note that stevia seeds have a relatively low germination rate, so it’s recommended to plant several seeds to increase your chances of success. Starting the seeds indoors in seed trays or pots with a well-draining soil mixture can help provide the optimal conditions for germination.

Once the seeds have germinated and the seedlings have developed their first true leaves, they can be transplanted into larger pots or directly into the garden. It’s crucial to provide adequate spacing between plants as stevia plants can grow quite bushy and require room for proper air circulation.

Growth Rate

Stevia plants have a moderate growth rate, and under optimal conditions, they can reach a height of 1 to 3 feet (30 to 90 centimeters). The growth rate can vary depending on several factors, including environmental conditions, soil quality, and care provided.

In general, stevia plants will start to grow vigorously during the warmer months of spring and summer. They thrive in well-draining soil with a slightly acidic pH of around 6.5. Providing them with full sun exposure for at least 6 hours a day will ensure optimal growth.

Care and Maintenance

To encourage healthy growth and maximize the yield of your stevia plants, certain care and maintenance practices should be followed:

Watering

Stevia plants have shallow roots, so it’s important to ensure they receive adequate water without overwatering. The soil should be kept consistently moist but not waterlogged. Regular watering is especially important during dry spells or hot weather.

Fertilization

Stevia plants benefit from regular fertilization to provide them with essential nutrients. Using a balanced fertilizer with equal proportions of nitrogen, phosphorus, and potassium (NPK) can help promote healthy growth. It’s advisable to follow the manufacturer’s instructions regarding the application rates and frequency of fertilization.

Pruning

Pruning stevia plants is not necessary for their growth but can help maintain their shape and encourage bushier growth. Pinching off the tops of young plants when they reach around 6 inches (15 centimeters) in height can promote branching and result in a fuller plant.

Pests and Diseases

Stevia plants are generally resistant to pests and diseases. However, like any plant, they can still be susceptible to certain issues. Common pests that may affect stevia include aphids, whiteflies, and spider mites. Regular inspection and prompt action can help prevent significant damage. In case of disease or infestation, organic pest control methods are recommended to avoid any chemical residues on the leaves.

Harvesting Stevia

Stevia plants can be harvested once they have reached a mature stage and have developed a substantial amount of leaves. The best time to harvest is just before the plant flowers, as this is when the sweetest leaves are produced.

To harvest stevia, simply cut off the stems just above the soil line. You can either harvest the entire plant or selectively pick leaves as needed. Once harvested, the leaves can be dried and crushed into a fine powder or used directly to sweeten various dishes and beverages.

Conclusion

Growing your own stevia plant can be a rewarding experience, especially for those looking to reduce their sugar intake and have a fresh supply of natural sweetener on hand. Understanding the growth rate of stevia plants and providing them with proper care and maintenance will ensure healthy growth and a bountiful harvest. With patience and attention to detail, you can enjoy the benefits of this versatile herb in your own garden.