Tips on How to water your tree

Photo credit: Trusty Joe


Learning how to water a tree is one of the best ways to keep it healthy and stress-free, especially during the hotter months of the year. But did you know that the most common watering mistake is actually too much water?

Whether it’s too much or too little, watering can be tricky if you don’t know how to do it. Follow this guide to ensure your Bios Urn® tree thrives.


Tips on how to water a tree

What time of day to water

During a typically hot afternoon, up to half of the water can be lost to evaporation. The best time to water is in the morning or evening, so the roots have a chance to absorb most of the water.

However, there’s no magic schedule for watering trees. How often you should water will depend on the size of your tree, soil conditions, and weather conditions. Newly planted trees require much more water than established ones, we go into more detail about this below.

The best way to determine whenyour tree needs water is to check the soil. What you’re aiming for is moist — not soggy — soil. In the absence of rain or moisture, check the soil with a garden trowel to a depth of two inches (5 cm). If the soil is dry to the touch, your tree needs water.

The quantity of water

For established trees, the rule is generally 10 gallons of water (approximately 38 liters) for each inch (2.5 cm) of the tree’s diameter. You can use a ruler at knee height to measure or just use your best guess.

How to water a tree

Perhaps the most important element of watering when it comes to trees is the “how”. Slow and deep is your best bet, which is why drip lines are the preferred method of watering (although spray from a garden hose will certainly work). Drip irrigation also loses less water to evaporation compared with overhead watering or sprinkler systems.

Deep watering allows the critical root zone to take up adequate moisture. When setting up a drip line, be sure it extends to the entire area beneath the tree’s canopy and to a depth of 10 inches (25 cm) if possible.

Bios Urn Blog: How to water a tree

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Aim for consistency

Allowing the soil to completely dry out — or allowing it to stay soggy — will result in a tree that is stressed and therefore more prone to disease and infestation. Keeping the soil consistently moist is essential to healthy trees.

Choosing the right tree species

In regions where drought is typical, choose drought-tolerant species when planting new trees. Drought-tolerant trees are adapted to dry climates and will not only grow better, but help you to conserve water as well. Remember that you can use the Bios Urn with the own tree of your choice.

Newly planted trees

Young trees are still establishing their root systems and therefore need more water. Water newly planted trees once a day for the first couple of weeks after planting, and once a week after that during the growing season.

Remember to check the soil to ensure you are not over watering. Once the roots begin to extend beyond the root ball, you can water on a normal schedule.

Mulch is your best friend

Mulch is a highly effective way to keep the soil from drying out quickly, especially during excessive heat. Applying mulch 2-4 inches deep (5-10 cm) will help conserve moisture and regulate the soil temperature.

Water year round

Don’t forget to water your tree in the winter during dry spells. Just because they are dormant doesn’t mean your trees aren’t growing. Water when air and soil temperatures are above 40 degrees F (4.5ºC) and when there is no snow cover. Your trees will thank you later!


Do you have any tips to add on how to water a tree? We would love to hear from you in the Comments section below!

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You may also enjoy reading How can I make sure my tree grows.

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