Avocado trees are not difficult to grow in tropical and subtropical climates. In the first few years, they need consistent pruning and fertilizer to grow well, but they will largely take care of themselves once established. The most important care task to remember is watering, as these trees will not flower or produce well without plenty of moisture.
Avocado tree basics
Avocado popularity may seem relatively recent and almost meteoric. However, archaeological research shows these trees have been cultivated for thousands of years.
The first Persea americana trees were domesticated about 4000 years ago in Mexico. They are now grown in warm climates beyond Central America. These plants grow best in hardiness zones 9-11, although you can cultivate them in other areas with special equipment.
Types of avocado trees
There are several different types of avocado trees and, subsequently, avocado fruits. Many of the types regularly available in grocery stores, such as the Haas avocado, are also great for growing in home gardens. But when growing your avocado tree at home, you can access many more options.
Avocado cultivars are split into Type A and Type B, depending on when they flower. Type A avocados start with female flowers, while Type B flowers first with male flowers, switching later on. That means you only need one avocado tree for fruits as they can self-pollinate, but you will see far better yields when you plant two opposite types together.
The most common Type A avocados are Haas, Gwen, and Mexicola Grande. Reed is another option that is less thirsty than the other types. Type B avocados include Fuerte, Winter Mexican, and Sir Prize. It’s best to visit your local nursery to see what types are available, as these are more likely to grow well in your region.
Planting avocado trees
Once you’ve purchased your chosen avocado (or avocados), it’s time to get planting. These trees need plenty of sun and lots of space to accommodate their expansive root systems.
When to plant avocado trees
The best time to plant avocados (or transplant existing trees) is in early spring. This is also when they will become available at your local nursery. As they prefer warmer temperatures, this gives the tree time to get used to its new home and settle before the temperatures drop in fall. If you miss this window, you can also plant at any point in spring, but avoid high temperatures that can stress the roots and inhibit growth.
Where to plant avocado trees
These trees love warm climates and grow best in USDA Zones 9-11. They can be grown in areas out of these zones, but may not produce as well and will need protection in winter. Alternatively, you can consider growing indoors, although fruiting is also unlikely in these conditions.
As avocados are large trees, they need enough space for their roots to expand. It’s best to give them around 15 feet of space on average between other trees in your garden and nearby structures like walls. This amount should be adjusted slightly according to the mature size of your chosen cultivar.
Avocado trees need a sunny planting location to grow vigorously and to produce ample fruit. Look for an open exposure where the leaves will receive sunlight throughout the day.
The ideal soil for avocado trees is nutrient-rich and well-draining. This limits the need to fertilize in later years and prevents any chances of rotting when watered as often as avocado trees need. Also make sure they are given plenty of sun, preferably a full 8 hours of direct light for the best yield.
How to plant avocado trees
To prepare your space for planting, dig a hole around double the width and depth of the avocado container. Mix in high-quality compost to the soil from the hole and fill in again to provide a nutrient-rich and well-aerated base for growth. Gently tease the roots, disturbing as little as possible while positioning them to expand outwards. After planting, water immediately to limit transplant shock.
Avocado tree care
Avocado trees need some extra attention when they are first starting out. However, after several years of growth and when they start producing fruits, they largely take care of themselves.
An avocado tree typically takes about 3 to 4 years to bear fruit if it was grown from a grafted sapling purchased at the nursery. If grown from seed, producing fruit can take 5 to 13 years. The time can vary based on growing conditions, tree health, and avocado variety.
Watering
One of the things avocado trees are well-known for is their high water needs. These are thirsty plants, especially when they are in the process of making their delicious fruits. Plants without adequate water can exhibit drooping, even brown leaves.
In the first years of growth, they will need to be watered often, potentially a few times a week during warm weather. This will slow in winter, but they still shouldn’t be left completely dry for long periods to keep the roots happy.
Make sure you factor rain into your watering schedule. If it has rained recently, you won’t need to water your avocado tree again for a couple of days. In dry seasons, they will need frequent watering if you want to boost yield at the perfect time.
Mulching is a big help when growing avocado trees. This helps keep the roots cool and retains moisture in the soil, slowing evaporation. As these trees are such high water users, mulching is an essential practice.
Fertilizing
In the first few years of growth, a seasonal application of fertilizer is essential in establishing the tree (applied in every season except winter). However, after 4 or 5 years, you can reserve fertilizing for times when the soil lacks nutrients, as indicated by a soil test. If the soil is not nutrient deficient, an application of compost around the soil as a mulch should be enough to keep your avocado tree happy throughout the year.
Citrus tree fertilizers are great options for avocado trees as they contain the right ratio of nutrients, especially higher amounts of nitrogen. If you can’t find a citrus-specific fertilizer, choose one with a higher ‘N’ number in the NPK ratio for the best possible growth.
Growing avocado trees indoors
You may have noticed the rise in interest in growing avocado trees indoors recently. Not only does growing them from seed make a great indoor gardening experiment, but the glossy leaves also make these trees ideal foliage plants for indoor growth.
Unfortunately, as the conditions are not ideal, they will grow incredibly slowly indoors and are unlikely to produce fruits. But giving them at least a few hours of direct sunlight daily will improve growth. You can also move them outdoors in the warmer months to encourage fruiting, bringing them back indoors later to protect them from the cold.
How to prune avocado trees
As avocado trees are so large, pruning is a vital tool in managing their growth and keeping them tidy in your backyard. Early pruning and shaping will also improve branching and encourage new growth, ultimately producing more fruits in the long run.
Soon after harvesting, it’s time to cut your avocado tree back. Use pruning shears or loppers for larger branches and follow these steps:
- Remove branches close to the ground.
- Remove dense sections of leaf growth to improve sunlight penetration lower down on the tree.
- Remove crossing branches and dense growth to increase airflow.
- Cut off damaged or diseased branches as soon as they are spotted to preserve energy and direct it toward fruit development.
Here’s a detailed guide all about how to prune avocado trees.
How to propagate avocado trees
Avocado trees can be grown from seeds or cuttings. Growing from seeds is a popular method thanks to viral online hacks, but it is not totally reliable as fruits will not be the same as the parent plant. Cuttings offer a more certain result but are more technical.
There are three methods of seed propagation to try:
- Water germination: Suspend the seed over water using toothpicks, keep it in a warm sunny spot, and the roots will grow into the water. Move to pot or plant outdoors.
- Wet paper towel: Cover the seed in a wet paper towel in a plastic bag. Keep moist until roots have developed, then replant.
- Soil planting: Plant seed in soil mixture and keep in a warm spot until new growth appears.
To propagate from cuttings, cut a new branch in early spring and remove leaves on the bottom half. Strip the stem slightly, dip it in rooting hormone, and plant it in a pot with coconut coir and perlite. Cover with a plastic bag to maintain humidity around the cutting and roots should develop within a few weeks.
Harvesting avocados
Different types of avocados will be ready for harvest at different times. The fruiting pattern of the tree can also change throughout the years with differences in care. Telling when they are ready for picking is also a difficult task as they will soften most once removed.
As a general guide, wait until you spot one or two fruits dropping off the tree before you get ready to harvest. Size is one of the only indicators available, so try to pick the largest fruits first. Once removed, wrap them in newspaper to speed up the ripening process. They are ready to eat when the flesh is soft, which can be hard to determine depending on your avocado type. Test frequently to avoid missing the window.
Once your avocados are ready, you can slice them to eat alone or add them to salads and sandwiches. The creamy texture is also great for dips and sauces. Try to ripen the fruits in stages to avoid wastage.
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