How to Grow an Avocado Tree

Next time you enjoy an avocado or use it in a recipe, be sure to save its seed. Growing your own avocado tree is easy and fun. It’s a great project for people of all ages, whether you plant it outdoors in your garden or indoors, and it's a perfect activity for classrooms or at home!

Remove the seed. Carefully cut into the avocado without touching the seed in the center. You can use a knife to make a circular cut around the avocado, about 1.3 cm deep, then twist the two halves in opposite directions to open it. Gently remove the seed and set it aside.

• To avoid waste, you can use the avocado flesh to make guacamole.

Wash the avocado seed. Gently wash it to remove any remaining flesh. Use water and wash by hand, without soap. Be careful not to remove the thin, light brown skin surrounding the seed, as this could damage the seed and make it harder to sprout.

Insert toothpicks into the seed. Hold the seed upright (with the pointed end facing up), and stick four toothpicks evenly spaced around the seed, about 2.5 cm deep. This will help keep the seed balanced in the cup without completely submerging it.

Fill the cup with water. Pour water into a small, narrow container (a cup works best) until it reaches the rim. The top of the cup should be wide enough to comfortably place the seed inside, but not too wide, as the toothpicks might not be long enough to support the seed, causing it to fall into the water.

Place the seed (with the toothpicks) on top of the cup. Position the toothpicks on the rim of the cup so that the seed is submerged halfway in the water. Ensure the pointed end of the seed is facing up and the rounded end is in the water, as this is crucial for the seed to sprout.

Place the avocado seed in a quiet spot with moderate temperature, near a window or somewhere with good light. This is essential for the seed to start sprouting roots and germinating.

Change the water every 1-2 days. This helps prevent harmful substances such as mold, bacteria, and yeast from hindering the germination process. Ensure the bottom part of the avocado seed is always submerged in water.

Be patient as the seed begins to sprout roots. After 2-3 weeks, the brown outer shell will start to dry, wrinkle, and even peel off. The seed will crack open at both the top and bottom, and after 3-4 weeks, the main root will begin to grow at the bottom.

Continue providing water for the plant. Be careful not to disturb or damage the main root. Keep waiting for the avocado seed to sprout more roots. Soon, a small shoot will emerge from the top, and it will open up, beginning to grow into a tree branch with leaves.

Chọn địa điểm. Cây bơ rất kén chọn khí hậu và điều kiện sinh trưởng. Thông thường, cây bơ nên được trồng trong chậu và di chuyển để đáp ứng điều kiện khi thời tiết thay đổi. Bạn chỉ nên trồng cây bơ ngoài trời nếu nhiệt độ không xuống thấp hơn 10 độ C vào bất cứ thời điểm nào trong năm.

Chuẩn bị đất. Cây bơ có thể trồng ở đất có bất cứ độ pH nào, nhưng hàm lượng muối thấp và thoát nước tốt. Đất trồng cây bơ không cần bón nhiều phân cho đến khi cây được một tuổi. Khi đó, bạn dùng loại phân bón 10-10-10 mỗi năm 2 lần để giúp cây phát triển.Nếu không thì bạn có thể dùng đất trồng cây thông thường và đặt thêm ít sỏi vào đáy chậu để giúp thoát nước tốt.

Chuẩn bị chậu. Dùng chậu đất nung rộng khoảng 20-25 cm, đổ đất vào đến cách miệng chậu khoảng 2 cm. Tốt nhất là dùng hỗn hợp gồm một nửa đất mặt và một nửa xơ dừa. San phẳng và nén nhẹ đất, cho thêm đất nếu cần. Khi đã chuẩn bị xong đất, bạn đào một hốc sâu vừa đủ kích cỡ của hạt và rễ cây bơ.

Chuẩn bị hạt. Khi bộ rễ đã cứng cáp và ngọn cây sẵn sàng mọc lại lá (sau khi cắt tỉa ít nhất một lần), cây bơ con của bạn có thể trồng xuống đất được. Lấy hạt đã mọc mầm ra khỏi cốc nước và nhẹ nhàng rút tăm ra.

Trồng hạt bơ. Cẩn thận vùi hạt vào đất sao cho nửa trên của hạt nhô lên khỏi mặt đất. Làm như vậy để đảm bảo cho phần thân dưới của cây con không bị thối rữa dưới đất. Đắp đất nhẹ nhàng xung quanh hạt.

Provide sufficient water for the plant. Water it daily or ensure the soil stays moist. Avoid overwatering to the point where the soil becomes muddy. If the edges of the leaves turn brown, the avocado tree needs more water. If the leaves turn yellow, it indicates overwatering, and you should let the soil dry for one or two days.

Maintain the plant regularly. With consistent care over the years, you'll have a lovely avocado tree that doesn't require much attention. Your family and friends will be impressed by your ability to grow an avocado tree from a seed used in making guacamole.

Buy a high-quality avocado. Remove the flesh from the seed. The easiest way to do this is by cutting around the avocado.

Twist to remove the seed. Use a knife to tap the seed, then twist it, and the seed will come loose.

Identify the pointed end of the seed. This is the top part of the seed.

Choose a planting location. You can refer to the method above for ideas on where to plant the tree. Clear any weeds and debris to prepare for planting.

• If possible, consider planting two trees, as this variety prefers to grow next to each other.

Place the rounded end down. Press the seed into the soil. Cover it with soil. Water lightly and leave it to settle.

Follow the tips provided above. Fertilize once you see the plant emerging from the soil. Do not fertilize too early, as it may hinder root development. You may see fruit in 3-4 years.

Harvest when the avocado fruits are large and round. Avocados do not ripen on the tree. You must pick them and place them in a food bag to let them ripen. Once the fruit becomes soft, it’s ready to eat.

• Be patient. Sometimes you may think your avocado tree isn’t growing because it looks like a stick in the ground. Don’t pull it up! Your young avocado tree is growing! It may need to grow up to 15-20 cm before it produces leaves.
• In winter or cold climates, it’s best to plant the sapling in a medium-sized pot instead of directly in the ground. Place the plant by a window that gets sunlight and keep the soil moist, but don’t overwater it.
• There’s a question about whether avocados need cross-pollination from another tree. This is not always necessary. At least for some varieties, both male and female flowers grow on the same tree, and it can self-pollinate. You can also graft a branch from a fruit-bearing tree onto your own tree (though grafting is a different process).
• Although there were old beliefs that avocado trees couldn’t be successfully grown from seeds (with an exception rate of about 1 in 1,000), and even if they were grown, it would take 7 years before they produce fruit, and the fruit wouldn’t be edible, there have been cases that prove the opposite. A special variety of avocado, the black-skinned avocado from Sabinas-Hidalgo, Tamaulipas, Mexico, grows very quickly when grown from seed and produces delicious fruit. The skin of this avocado is smooth, very thin, and edible, and its peel is highly nutritious.
  • Sabinas-Hidalgo is located about 130km south of the twin cities of Laredo, Texas, USA, and Nuevo Laredo, Tamaulipas, Mexico, across the Rio Grande river. For many years, Texas residents have crossed into Mexico and bought Sabinas avocados at a cheap price (it is still extremely affordable by comparison). When crossing into the US, these avocados must be declared, cut open, and the seed removed. However, some seeds are smuggled back into the city and planted. Currently, many avocado trees bearing fruit are growing in Laredo, Texas, where the soil is ideal – evidenced by the abundance of fruit. It’s best to plant the Sabina avocado tree on the east side of the building, as the intense Texas sun, especially in summer, can cause severe damage to the tree. The Sabina avocado is easy to graft, highly productive, and has a richer taste. This variety is slightly more elastic than most other avocados sold in Texas stores. The leaves of this tree are also typically larger and more prominent. This is a fast-growing, resilient variety that is almost immune to pests.
  • The Sabina avocado has an even better taste if it is slightly heated. The fruit contains oil (100% cholesterol-free), so you can slice it and heat it in a cast-iron skillet without adding any butter or oil. Heat it on the stove until just warm. Sliced tomatoes can also be heated in the same skillet. After a few minutes, place the tomatoes on the avocado, close it with the bottom half of a sandwich, then flip it. Let it sit for about a minute to heat up the sandwich's bottom. Remove it and place whatever toppings you like (lettuce, salsa, onions, etc.), close it with the top half of the sandwich (also heated in the skillet), and you’ll be surprised by the flavor. Warmed avocado tastes richer and more intense. It contains a lot of iron, protein, and other nutrients, making it one of the most perfect natural foods. Although it has a relatively high fat content, it contains no cholesterol.
• Avocados with seeds from certain regions are not allowed to be imported into the United States due to harmful pests, including weevils that infest avocado seeds (Conotrachelus aguacate, Conotrachelus perseae, Heilipus lauri, Zygopinae spp) and Stenoma catenifer, an avocado seed moth. As its name suggests, the larvae of this insect grow inside the avocado seed. For more information, contact the plant protection office in your area. If you are in the US, you can refer to the USDA APHIS website at: http://www.aphis.usda.gov/

• An avocado tree grown from a seed will grow much taller than a grafted one. The branches are fragile and can't bear heavy loads, so avoid hanging anything heavy, like a hammock, as it could break the branches.
• Cold temperatures (below 10ºC) can cause shock to your avocado tree. It’s important to protect it from chilly winds, drafty areas, and window glass. If your tree is in a pot, move it indoors until the weather warms up. For young trees and most potted plants, cover the entire canopy with a thick blanket or plastic during the cold season, at least until the weather improves. Trees with well-established roots can usually survive frost and near-freezing temperatures. For peace of mind, always cover your tree if you're unsure about the weather.
• Poor lighting or improper watering can weaken the trunk and branches, ultimately causing them to break.
• Weak or spindly trunks and branches make the tree more susceptible to breaking. If you don’t prune your tree regularly, the trunk and branches will become long, weak, and crooked. Pruning helps the tree become thicker and stronger, promoting healthier growth.
• Excessive pruning (either too much or too often) can cause the tree to become stunted and not produce leaves. After your first pruning, only trim the new shoots at the tips of the branches and trunk. For the main trunk and branches, pruning encourages denser growth and stronger, healthier leaves.
• Not changing the water or ensuring it’s sufficient when germinating an avocado seed can lead to contaminants forming in the water and/or roots. Mold, rotting roots, and fermented water can quickly poison the plant. Make sure the water stays clean and at the right level.
• If the bottom of the avocado seed dries out, it will be difficult, if not impossible, for the plant to germinate.
• Do not plant the tree directly in the ground until it has developed a strong root system in the pot. Healthy roots and well-drained soil will make the transition to outdoor planting much smoother.
• An avocado tree grown from a seed bought at a store may struggle to produce fruit. While store-bought avocados don’t alter genetically, they require specific conditions to bear fruit. Don’t expect to harvest any fruit from this tree.

• A ripe, whole avocado
• A shallow cup
• Four toothpicks
• Water
• A plant pot
• Gravel for drainage
• Soil