Updated: June 27, 2023

Mandarin plants, also known as mandarin orange trees, are a popular choice for home gardeners and citrus enthusiasts. These trees are not only aesthetically pleasing with their evergreen foliage and fragrant blossoms, but they also produce delicious and nutritious fruits. However, growing mandarin plants requires patience and understanding of their stages of growth. In this article, we will explore the different stages of growth that mandarin plants go through and provide tips on how to care for them at each stage.

Stage 1: Seed Germination

The first stage in the life cycle of a mandarin plant is seed germination. Mandarin seeds can be obtained from mature fruits or purchased from nurseries. To improve germination rates, it is recommended to use fresh seeds that have been removed from ripe fruits. Once you have obtained the seeds, follow these steps to promote successful germination:

  1. Seed Preparation: Rinse the seeds thoroughly to remove any pulp or residue. Some gardeners prefer to soak the seeds in water overnight before planting.

  2. Seed Planting: Fill a small pot with well-draining potting soil and make a shallow hole in the center. Place the seed in the hole and cover it lightly with soil. Water the pot gently until the soil is moist but not saturated.

  3. Germination Environment: Place the pot in a warm location with indirect sunlight. Covering the pot with a plastic bag or using a mini greenhouse can help create a humid environment that encourages germination.

  4. Patience: Germination can take anywhere from 2 weeks to several months, so be patient and monitor the soil moisture regularly.

Stage 2: Seedling Development

Once the mandarin seeds have successfully germinated, they will enter the seedling stage. This stage is characterized by the emergence of small green shoots from the soil. Here are some key points to consider when caring for mandarin seedlings:

  1. Light: Provide the seedlings with bright, indirect sunlight. If natural light is inadequate, consider using fluorescent grow lights placed a few inches above the plants.

  2. Temperature and Humidity: Maintain a warm and humid environment for optimal growth. The ideal temperature range for mandarin seedlings is between 70-85°F (21-29°C).

  3. Watering: Keep the soil consistently moist but not waterlogged. Overwatering can lead to root rot, so it’s important to strike a balance.

  4. Fertilization: After the first few weeks, you can start fertilizing the seedlings with a balanced citrus fertilizer at half the recommended strength. Follow the instructions on the fertilizer package for proper application.

  5. Transplanting: As the seedlings grow, they will outgrow their initial pots. Transplant them into larger containers once they have developed a well-established root system.

Stage 3: Vegetative Growth

During the vegetative growth stage, the mandarin plant focuses on developing its foliage and establishing a strong root system. This stage typically lasts for several months to a year, depending on the variety and growing conditions. Here are some key considerations during this stage:

  1. Sunlight: Mandarin plants thrive in full sun, so provide them with at least 6-8 hours of direct sunlight per day. If growing indoors, place them near a south-facing window or supplement with grow lights.

  2. Watering: Water regularly, ensuring that the soil remains evenly moist but not saturated. Adjust watering frequency based on environmental factors such as temperature and humidity.

  3. Pruning: To promote healthy growth and shape the tree, prune any dead or diseased branches. Pruning should be done during late winter or early spring before new growth appears.

  4. Fertilization: Feed the mandarin plant with a citrus-specific fertilizer every 6-8 weeks during the growing season. Follow the instructions on the fertilizer package for proper application.

  5. Pest and Disease Control: Monitor the plant regularly for signs of pests or diseases, such as aphids, scale insects, or citrus leaf miner. Use organic or chemical controls as necessary to prevent infestations.

Stage 4: Flowering and Fruit Development

The flowering stage is an exciting time in the life of a mandarin plant. It signifies that the tree is mature enough to produce flowers and eventually fruits. Here’s what you need to know:

  1. Pollination: Mandarin plants are self-fertile, meaning they don’t require cross-pollination from other trees. However, bees and other pollinators can improve fruit set and yield. Encourage pollinators by planting bee-friendly flowers nearby.

  2. Fruit Thinning: To ensure the development of healthy and well-sized fruits, consider thinning the excess blossoms when they begin to form small fruit. This allows the tree to focus its energy on fewer fruits, resulting in better quality harvest.

  3. Protection from Extreme Temperatures: Protect the tree from frost or extreme temperatures during flowering and fruit development. Covering the tree with a frost cloth or bringing potted plants indoors can help prevent damage.

  4. Harvesting: Depending on the variety, mandarin fruits typically ripen in late fall to early winter. Harvest them when they are fully colored and easily detach from the tree.

By understanding and nurturing mandarin plants through their various stages of growth, you can enjoy a bountiful harvest of delicious and juicy fruits. Remember to provide them with proper care, including adequate sunlight, water, nutrition, and protection from pests and diseases. With patience and dedication, your mandarin plant will reward you with not only a beautiful addition to your garden but also a delicious treat for you and your family to enjoy.