As an arborist business, we know that watering trees in landscaped areas is essential to their long-term survival. Water delivers a range of nutrients to trees, first through the roots then up and across to the branches and leaves. Without enough hydration, trees stop growing, their foliage wilts and dies, and they are more vulnerable to attacks from pests and diseases.
We also know it can be difficult to figure out your trees, including the amount of water they need, and how often they need it. That’s why we’ve got a handy starter guide for all things tree watering below.
For personalised advice, contact our team at Uppercut Tree Services today.
First, Check the Moisture Level
Have you just planted a new tree or trees? Or are you looking to refresh your care routine for an established tree? Either way, it’s a good idea to understand how much water it’s actually getting, based on the current level of moisture in the surrounding soil.
Just dig a few inches into the soil and pick up a handful of dirt.
- Does the soil quickly crumble and flake out of your hand? Dry soil like this means your trees need more water.
- Does the soil adhere to your skin? Sticky soil is properly hydrated, and your trees are likely all good.
- Is the soil moist, and dripping through your fingers? Your tree is getting too much water.
Once you have an idea of the soil hydration levels, it’s time to consider the needs of your tree in more detail. There are a number of factors to keep in mind, including the tree’s species, size, and soil environment.
We recommend paying close attention to the tree’s age, i.e. when it was planted. Newly planted trees and already-established trees often have different watering needs.
Requirements for Newly Planted Trees
A newly planted tree has been alive for a few months or less. For several months, it maintains what we call the root ball, or a compressed mass of roots at the base. While these roots are still growing and extending outwards, they should be watered deeply and frequently.
How Much Water do my Trees Need?
Whether you have a new or established tree, you should aim for ‘deep watering’. This means the moisture is not only reaching the trunk and topsoil but going down through the soil to the mass of roots underneath. Newly planted trees in particular need dedicated deep watering. Start by watering the area near where the root ball is, then after a few months, expand your watering to the entire area under the canopy.
How Often Should I Water my Trees?
We recommend watering your newly planted tree at least once a week, and ideally, every two or three days, particularly in the first few weeks while it’s growing a lot. Frequent water sessions are especially important in very hot or dry conditions, as your tree may be unusually parched. However, make sure to always avoid water-logging the soil.
How Should I Water Them?
To guarantee decent deep watering, establish a slow but steady stream of water through a drip irrigation system, or a sprinkler turned on for extended periods of time. Alternatively, you could set up a hose, or even a bucket. Put some holes in the bottom of your bucket, position it in the trunk, and fill it up with water. This water will slowly trickle down the trunk to the roots.
Requirements for Established Trees
Once a tree is fully grown or close to it, its network of roots underground will be extensive. Often, the longest root below the soil will cover more distance than the longest branch in the canopy above. However, most of these roots will still be located in the upper 12-18 inches of soil.
How Much Water do my Trees Need?
An established tree doesn’t need as much water overall as a new one. But you will probably need to hydrate an even wider area than before, as your aim will be to water up to – and a few feet beyond – the tree’s drip line or the area directly below the longest branches. Also try to soak the soil to a depth of 10 or more inches, just to make sure those roots are covered. You can use a soil probe or a shovel to check how far down the water is going.
How Often Should I Water my Trees?
Established trees are generally happy with one or two deep watering sessions a week, at least during drier periods. In rainy or cold seasons, they receive more natural moisture and won’t need as much watering.
How Should I Water Them?
Common watering techniques such as drip irrigation systems, sprinklers and hoses are also great for established or older trees. Your aim should be to apply a slow, deep source of water that penetrates the root zone without running off and being wasted. Also try leaving a little bit of space near the trunk free of water, as this will help prevent rot.
Want More Advice on the Best Way To Water Trees? Get In Touch!
There are many ways to optimise – or accidentally sabotage – the watering routine for your tree. In addition to the tips above, we recommend sticking to a consistent watering schedule, as patchy watering can cause stress to your tree. Try watering outside in the heat of day, ideally in the morning, as water evaporation will be minimal. Also, try scattering mulch near the tree trunk.
Ultimately, your plan for tree watering and maintenance will depend on a number of factors, including not only the attributes of your tree but the general climate and weather conditions in your area. If you’d like more targeted advice, please get in touch with our friendly team below.
