How often to water sugar maple in California
In July on the north-central coast, established sugar maple in loam needs a deep watering about every 13 days: about 55 gallons each time under a 10 foot canopy, about 29 gallons a week. Sugar maple is a large deciduous shade tree from eastern North America, famous for its syrup and its brilliant red, orange and yellow fall color. It grows slowly into a dense, spreading crown, often 40 feet or more tall. It needs moist, fertile, well-drained soil and suffers in heat, drought, salt and compacted ground.
How often to water sugar maple, month by month
Type your city above and the days between waterings and the gallons appear here, worked out from your city's climate table. Or read the figures by climate zone further down.
How this is worked out: established roots fill the top 1.5 feet of soil, and you water again when that soil has dried halfway. Loam soil holds about 1.5 inches of water per foot. Water the whole area under the branches, and skip a watering after a good soaking rain.
How to tell it needs water
- Soil dry 4 to 6 inches down beneath the canopy edge signals that sugar maple needs a deep soak
- Leaf edges browning and curling in summer can be leaf scorch, which this maple develops in drought
- Wilting on one side of the crown, with dying branches, can point to Verticillium wilt rather than thirst
- Black, tar-like spots on the leaves are tar spot, a leaf disease rather than a water shortage
- Yellowing leaves over waterlogged soil can indicate poor drainage around the roots
How to water it
- Water across the whole area beneath the canopy and beyond, not just near the trunk
- Soak slowly so moisture reaches 12 to 18 inches down, then let the upper soil dry slightly before the next soak
- Spread a wide ring of organic mulch to keep the root zone cool and moist
- Keep foot traffic, parking and heavy equipment off the root area, since this tree does not tolerate compacted soil
- Plant in fertile, slightly acidic soil that stays moist but drains, away from paving its roots can crack
Through the seasons
Keep a new sugar maple evenly moist through its first two or three summers while roots spread. Established trees still want deep soakings through the dry season, since the species is sensitive to heat and drought. Leaves emerge in spring with drooping clusters of small yellow flowers, then turn red, orange or yellow before falling. WUCOLS rates sugar maple moderate water on the north-central coast, where winter rain usually supplies the dormant tree. WUCOLS marks it as not suited to the Central Valley, the south coast, South Inland, the high desert and the low desert.
In pots
Sugar maple is a big, slow tree that suits a container only while young. Use a deep pot with drainage holes and a rich, slightly acidic mix that holds moisture. Check the mix 2 inches down every few days in summer heat, and water before that layer dries out. Water until excess drains, then empty the saucer. Give the pot afternoon shade, since this maple is sensitive to heat. After leaf fall, keep the mix barely moist through winter.
- A year
- no figure
- Reference
- Sacramento climate table
- Counts
- Plant need, before sprinkler losses
WUCOLS lists Sugar Maple as not suited to this region for the Central Valley zone, so no monthly figure is computed here.
Monthly water need by climate zone
Sugar Maple: gallons per square foot per month, by WUCOLS climate zone
| Month | N. Coast | C. Valley | S. Coast | S. Inland | Hi Desert | Lo Desert |
|---|---|---|---|---|---|---|
| Jan | 0.37 | – | – | – | – | – |
| Feb | 0.53 | – | – | – | – | – |
| Mar | 0.87 | – | – | – | – | – |
| Apr | 1.18 | – | – | – | – | – |
| May | 1.46 | – | – | – | – | – |
| Jun | 1.61 | – | – | – | – | – |
| Jul | 1.61 | – | – | – | – | – |
| Aug | 1.49 | – | – | – | – | – |
| Sep | 1.24 | – | – | – | – | – |
| Oct | 0.87 | – | – | – | – | – |
| Nov | 0.47 | – | – | – | – | – |
| Dec | 0.31 | – | – | – | – | – |
| Year | 12 | – | – | – | – | – |
How this is worked out: the WUCOLS water rating for each zone times that zone’s climate for the month. A dash means WUCOLS does not rate the plant there. The figures are what the plant uses, before sprinkler losses.
Plants with the same water needs 16
Rated not suited to this region in the Central Valley, like sugar maple. Plants that drink alike can share one valve and one schedule.
Queensland KauriAgathis robustanot rated, Central Valleyno Central Valley rating
CherimoyaAnnona cherimolanot rated, Central Valleyno Central Valley rating
Purple Orchid TreeBauhinia variegata (purpurea)not rated, Central Valleyno Central Valley rating
ToogBischofia javanicanot rated, Central Valleyno Central Valley rating
Clustered Fishtail PalmCaryota mitisnot rated, Central Valleyno Central Valley rating
White SapoteCasimiroa edulisnot rated, Central Valleyno Central Valley rating
FilbertCorylus maximanot rated, Central Valleyno Central Valley rating
Spotted GumCorymbia maculata (Eucalyptus maculata)not rated, Central Valleyno Central Valley rating
Dove TreeDavidia involucratanot rated, Central Valleyno Central Valley rating
Royal PoincianaDelonix regianot rated, Central Valleyno Central Valley rating
Triangle PalmDypsis decaryinot rated, Central Valleyno Central Valley rating
Mountain White GumEucalyptus dalrympleananot rated, Central Valleyno Central Valley rating
Rainbow EucalyptusEucalyptus degluptanot rated, Central Valleyno Central Valley rating
Roxburgh FigFicus auriculatanot rated, Central Valleyno Central Valley rating
Indian BanyanFicus benghalensisnot rated, Central Valleyno Central Valley rating
Weeping Chinese BanyanFicus benjaminanot rated, Central Valleyno Central Valley ratingTurn this into minutes on your water days
Every city page has a calculator that takes sugar maple, your sprinkler type and the month, and gives the minutes per water day for that supplier's schedule. Or put it in a zone of the personal watering plan and get all twelve months printed.
Questions people ask
How much water does sugar maple need per day?
In July on the north-central coast, established sugar maple needs about 4.1 gallons a day under a 10 foot canopy and about 16 gallons a day under a 20 foot canopy. Give it in deep waterings spread days apart rather than a little every day, so the whole root zone gets wet.
Does watering for sugar maple change across California?
Yes. WUCOLS rates sugar maple separately for each of the six California climate zones: moderate water in the North-Central Coastal zone, not suited to this region in the Central Valley zone, not suited to this region in the South Coastal zone, not suited to this region in the South Inland zone, not suited to this region in the High and Intermediate Desert zone, not suited to this region in the Low Desert zone. The monthly table above shows how the same rating translates into different gallon amounts as reference evapotranspiration changes.
Can sugar maple grow in California?
WUCOLS rates it only for the north-central coast. It is sensitive to heat, drought and salt. Even there, give it deep soakings through the dry summer.
Why are my sugar maple leaves scorched?
Brown, crisp leaf edges in summer often mean leaf scorch, which this tree develops in drought. Check the soil deep in the root zone and soak it if it is dry. Heat and salt in the soil can add to the damage.
Can I tap my sugar maple for syrup?
Sugar maple can be tapped once it is about 40 years old. It is the only tree used commercially for maple syrup today.
Do sugar maple roots damage sidewalks?
They can. Its roots can crack sidewalks and clog drains and septic systems. Plant it well away from paving and pipes.
Can you overwater a sugar maple?
Yes. It needs moist soil that still drains well, and waterlogged ground harms the roots. Let the upper soil dry slightly between deep soakings.
More plant watering guides
Sources
- WUCOLS IV plant water use classification for Acer saccharum, the University of California survey California agencies use for landscape plan reviewRead August 23, 2026 on wucols.ucdavis.edu
- Model Water Efficient Landscape Ordinance, adopted text and appendices, effective 2025-01-02 · monthly reference evapotranspiration per city, Appendix CRead August 23, 2026 on water.ca.gov/-/media/DWR-Website/Web-Pages/Programs/Water-Use-And-Efficiency/MWELO-Rulemaking/Final-MWELO-Text-and-Appendices_20250103.pdf
- UC Statewide IPM Program, irrigation scheduling using evapotranspirationRead September 30, 2026 on ipm.ucanr.edu/PMG/GARDEN/ENVIRON/evap.html
- Shaw and Pittenger, Landscape Irrigation System Evaluation and Management, UC Cooperative Extension, 2009Read September 30, 2026 on ucanr.edu/sites/default/files/2013-02/160836.pdf
- Pittenger, Water Management in Gardens and Landscapes, UC Riverside, 2017Read September 30, 2026 on ucanr.edu/sites/default/files/2017-03/258022.pdf