General Tips
It is important to exercise caution when attempting to kill an avocado tree. Chemical herbicides, when incorrectly used, can cause harm to more than the targeted tree, so approach with care. For example, trees that are located close to water sources should be avoided when using herbicides, as the chemicals can infiltrate the water system.
The age of the tree should be taken into account when killing an avocado tree. Younger trees tend to be easier to control than established ones. Some methods are more effective on different age ranges, so it is worth researching thoroughly before making any decisions.
Digging out the root system of an avocado tree is certainly an option for destruction, but toxic chemicals can also be used for quick results. There are products available on the market specifically designed for killing avocado trees. These can be purchased and applied following the manufacturer’s instructions for maximum effectiveness.
Physical removal of the tree can be used in tandem with chemical destruction techniques. By cutting down the tree, removing the roots and disposing the debris, the growth can be stopped in its tracks. It is important to remember though that any remaining sprouts will need to be taken care of manually, using some form of destruction.
Chemicals
The active ingredient in many weed killers is glyphosate, a synthetic herbicide. Glyphosate kills by blocking the pathways that produce essential proteins necessary for the survival of an avocado tree. The chemical interferes with the weed’s ability to absorb energy from the sun, resulting in its death.
Glyphosate can be purchased from any gardening or home improvement store. It is important to read the directions and safety information before using glyphosate to ensure the product is not mishandled.
For best results, the glyphosate solution should be applied to the top of the soil in areas around the base of the tree. This will ensure the chemical enters into the root system and won’t just wash away in the rain. Do not spray the solution directly onto the foliage of the tree, as this will not be effective.
Alternative Methods
Cutting down the tree is another way to kill it once its age and size is taken into consideration. It is important to cut off the main stem and make sure it is completely removed from the area. All the roots need to be dug out to ensure no energy will reach the tree from the ground and make sure all the branches are detached.
Manually removing seedlings that sprout from the roots of the dead tree is also necessary. Those can be pulled straight from the soil or dug out with a trowel. As soon as the removal of seedlings is finished, the affected area should be covered with a thick layer of mulch or compost, a process known as smothering.
Preventative Measures
Preventing the growth of an avocado tree in the first place is an effective way to avoid having to kill it. Quality mulch should be used to create a barrier that prevents seedlings from sprouting in the first place. As an additional measure, a layer of tarps can be used to keep out sunlight and prevent growth.
If the tree is an inherited one, such as a present from a friend or family member, it should be planted in a protected spot in the garden where it is not likely to spread. The quality of soil should also be taken into consideration and amended with compost if needed to ensure the tree is not deprived of essential nutrients.
Tools
The tools required for killing an avocado tree vary depending on the techniques used. If the tree is cut down, a hand saw is generally needed. For digging up the roots, a trowel or shovel will be necessary. Rope and a pulley system may also be needed if the tree is bigger than five meters.
For chemical-based methods, a sprayer or applicator will be necessary to apply the solution. Safety equipment such as goggles, protective clothing and face masks should be used as well when handling toxic chemicals.
Biological Control
Biological control is one of the more humane methods of killing an avocado tree. The process involves introducing natural enemies of the avocado tree into the environment, such as certain types of nematodes, in order to naturally check the tree’s growth.
The nematodes are released around the base of the tree, where they will eventually make their way into the root system. The nematodes then feed on the root and eventually kill the tree. The process is slow but effective and has minimal impact on the environment, making it a much more sustainable option than chemical or physical destruction methods.
Problem Solving
Sometimes, an avocado tree can spread underground. In this case, the tree should be evaluated for problems such as the presence of inorganic matter, fungal infections or other diseases. If an issue is found, then it should be treated as per instructions from a horticulturalist.
If the tree is healthy but still needs to be removed, then it can be treated with a systemic fungicide. This fungicide will absorb into the root system and act as an insecticide, killing the tree and its surrounding roots. As with the chemical herbicide, it is important to read the instructions and safety information carefully before applying.
Pruning and Cutting
The pruning of an avocado tree is one of the most effective ways to contain its growth. Clear out the excess vegetation and prune the tree following standard horticultural procedures, in order to limit the tree’s foliage and spread. In addition, they can also be cut down to a manageable height.
Cutting an avocado tree is best done after the onset of winter, when the tree is dormant. The cut should be made at the base, making sure to remove the larger and more established branches. Once the tree has been cut, the wood can be chipped and the remaining roots can be dug up, if necessary.
Fertilisers
It is essential to use a balanced fertiliser when managing the growth of an avocado tree. Apply the fertiliser to the base of the tree and the surrounding soil, focusing on the places around the dripline and tree canopy.
It is best to use an organic fertiliser, as this will not harm nearby roots and can even help with soil fertility. Make sure to read the instructions on the package carefully before applying, as too much fertiliser can have harmful effects. Additionally, if weeds are also present in the area, it is important to pull them out or treat them with an herbicide to prevent competition for nutrients.
Diseases
Tree diseases can also be problematic if the tree is not properly taken care of, so preventive measures must be taken in order to reduce the risk of infection. Key signs of infection include discolouration and dark spots on the bark or leaves, as well as wilting. If any of these signs are found, a professional should be consulted immediately.
Accurate diagnosis and targeted treatment is essential when dealing with diseases. Organic fungicides and insecticides can be used, but it is important to verify the safety data given on the label before using. Additionally, the use of microbial inoculants can help reduce the risk of disease and aid in controlling the overall health of the tree.
