Water Alerts:
Our watering alerts will start the week of April 1. Watering alerts are sent via email every Monday morning and run mid-April through late October.
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Water Not Needed – Recent or predicted rainfall exceeding 1.5 inches this week. Trees have enough water.
Consider Watering– Trees may need water, depending on the forecast. Check trees for signs (wilting leaves and/or dry soil) and water as needed. See watering guide and FAQs below for more guidance on how to water.
Must Water – Not enough rainfall is observed or forecasted this week. Young trees must be watered.Watering alerts are determined using Northeast Ohio Regional Sewer District’s observed and predicted precipitation amounts, drought monitoring, and local forecasts for the Cleveland area. (need to modify)
How to Water:
Healthy trees start with consistent care — and watering is one of the simplest yet most important ways you can help them thrive. With the Cleveland region’s hot summers and variable rainfall, young and newly planted trees depend on regular watering to establish strong roots and withstand stress from heat, drought, and urban conditions.
Especially in the first two to three years after planting, trees rely on you to supplement what rain does not provide. Trees should be watered consistently from early spring to late fall (April 1 – October 31), up to 25 gallons of water (approximately 1.5 inches of rainfall) per week. Whether you’re caring for a tree in your yard, neighborhood, or local park, every gallon makes a difference.
Watering Essentials:
The easiest way to water trees is to slowly soak the soil around the roots and base with a garden hose. Ensure the water penetrates deeply rather than running off the surface. Water once per week under normal conditions, increasing to two or three times weekly or as needed during droughts or extreme heat. Avoid wetting the leaves or trunk—direct water only to the root zone for better absorption. For a simple alternative, repeatedly fill and empty a 5-gallon bucket at the tree’s base until the soil is thoroughly moistened.
Trees need approximately 10 gallons of water per inch of base trunk diameter, per week. Cleveland Tree Coalition often plants trees that are at least 1.50” in caliper (i.e. the trunk’s diameter is at least 1.5 inches), and thus require 15 gallons of water per week. But many trees may need up to 25 gallons of water (approximately 1.5 inches of rainfall), per week.
It is essential to water slowly, especially when the ground is hard and dry. Water should soak into the soil; if too much is applied too quickly, it will run off. If possible, place a hose a foot or so from the base of the tree and turn it on to a slow trickle. Let it run for about 30 minutes (set a timer for yourself), occasionally moving the hose nozzle to water the entire root zone of the tree. If you have a small sprinkler head, you can use that to cover a wider area – but again, turn it on low. You can also water with a five-gallon bucket that you have drilled 3-4 holes in the bottom, about the diameter of a pencil lead. Place the bucket at the base of the tree, fill it to the top with water, let it drain, move it slightly, and refill it – up to five times.
Frequently Asked Questions (FAQs):
When to water?
1
Water early spring to late fall (April 1 – October 31). The best time of day to water is early morning or late evening. Watering during the day results in losing much of the water to evaporation.
How much?
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Trees need approximately 10 gallons of water per inch of base trunk diameter, per week. We often plants trees that are at least 1.50” in caliper (i.e. the trunk’s diameter is at least 1.5 inches), and thus require 15 gallons of water per week. But many trees may need up to 25 gallons of water (approximately 1.5 inches of rainfall), per week.
Mulch keeps the water in the soil feeding the roots by slowing evaporation. Place a mulch ring around the tree following the 3-3-3 rule: create a ring of mulch about 3 feet wide and 3 inches deep, leaving a 3-inch space right around the tree trunk. Remember to donut mulch, not volcano mulch – piling mulch against the trunk results in poor tree health.
Should I mulch around my tree?
3
The best way to ensure a young tree stays healthy after planting is to keep it well watered. When unsure, choosing to water is often the best choice. If you are still concerned, you can check soil moisture. Moist or damp soil is fine. If the soil feels dry, water the tree thoroughly. Water should soak into the soil. Although overwatering is not common, trees should never sit in a puddle of water for an extended period. This can lead to root damage.