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How Often To Water Evergreen Trees?
Water new evergreen trees once a week for 2 years and established ones every 2 to 4 weeks in drought. Learn why fall and winter watering matter most.
Water newly planted evergreen trees deeply once a week for their first 2 years. Established evergreens usually need a deep soak only every 2 to 4 weeks during dry spells. Give all evergreens a long drink in late fall before the ground freezes, because they keep losing water all winter.
A starting point, not a rule. Check the soil before each watering and stretch the gap in cool, cloudy weather.
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Evergreens look the same all year, and that is exactly why they need water when other trees do not. Their needles and leaves keep losing moisture through winter, long after maples and oaks have gone to sleep.
This guide covers conifers like spruce, fir, arborvitae, juniper and cypress, plus broadleaf evergreens like holly. Young trees need regular deep water to root in. Your job is to water new evergreens weekly, then water mature ones in dry spells and before winter.
Evergreen tree watering schedule
| Tree age or season | How often |
|---|---|
| First month after planting | 2 to 3 times a week |
| Years 1 to 2 | Once a week, spring to fall |
| Established, normal rain | Usually no extra water |
| Established, dry spell | Every 2 to 4 weeks |
| Late fall and dry winters | Deep soak before freeze, then monthly on mild days |
Arborvitae and spruce prefer more moisture. Junipers and pines handle dry soil best once settled.
How to tell when an evergreen needs water
Dig a small hole 6 to 8 inches deep near the edge of the branches. If the soil is dry at that depth, water. If it is moist, wait.
Evergreens show thirst slowly, so you need to look closely. Needles may fade to a dull gray green, turn brown at the tips, or drop more than usual. On arborvitae, browning often starts on the inside and at the top.
How to water evergreen trees
- Water slowly at the drip line. A soaker hose in a ring under the outer branches is ideal.
- Give about 10 gallons per inch of trunk. This common guide works for each deep watering of a young tree.
- Soak 12 inches deep. Check with a long screwdriver. It should slide in easily after watering.
- Mulch 2 to 3 inches deep. Spread it wide, but keep it a few inches from the trunk.
Signs of overwatering and underwatering
Too much water
- Yellowing needles across the tree
- Soggy soil around the base
- Soft, dark roots
- Slow, thin new growth
Too little water
- Brown needle tips
- Dull, grayish color
- Needles dropping in summer
- Brown patches after winter
Fall and winter watering
The most important watering of the year happens in late fall. Before the ground freezes, give every evergreen a slow, deep soak. This fills the soil around the roots with moisture to carry the tree into winter.
In dry winters with little snow, water once a month on a mild day when the temperature is above about 40°F and the ground is not frozen. Water early in the day so it soaks in before night.
For pines in particular, see our guide to pine trees. Young trees of every kind follow the steps in watering new trees, and evergreen shrubs like boxwood follow new shrubs.
Evergreen Trees watering FAQ
Should I water evergreen trees in winter?
Yes, in dry winters. Water once a month on a mild day when the ground is not frozen, and always give a deep soak in late fall.
How much water does an evergreen tree need?
A common guide is about 10 gallons per inch of trunk diameter for each deep watering, given slowly at the drip line.
Why is my evergreen turning brown?
Dry soil, winter burn and root problems from soggy soil are the most common causes. Check the soil moisture first.
We turn horticulture research and real growing experience into plain-English watering schedules you can actually follow.