How often to water sugar pine in California
In July in the Central Valley, established sugar pine in loam needs a deep watering about every 20 days: about 55 gallons each time under a 10 foot canopy, about 19 gallons a week. Sugar pine is the tallest and most massive pine in the world, a native of California and Oregon mixed conifer forests. It has long bluish green needles, deeply furrowed reddish brown bark and branches that sweep out from the upper trunk. Huge cones, the longest of any conifer, hang from the branch tips. It wants cool sun to part shade and well-drained soil.
How often to water sugar pine, 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 6 inches down at the edge of a young sugar pine's root ball signals that it needs a deep soak
- Pitch tubes or piles of fine boring dust on the trunk point to bark beetles, which attack drought-stressed pines
- Dead branch tips with brown needles, called flagging, can signal white pine blister rust rather than thirst
- A thinning crown over soil kept wet near the trunk warrants a check for root rot
- Needles yellowing across the crown in a long, hot dry spell suggest the tree is short of water
How to water it
- Water a young tree slowly over its root ball and a ring beyond it with drip or a soaker
- Soak the soil about 2 feet down, then let the upper several inches dry before the next soak
- Plant in deep, well-drained soil in cool sun or part shade, away from lawns that keep the trunk area wet
- Leave fallen needles under the canopy as a mulch that keeps the soil cool
- Move watering outward toward the drip line as the tree grows, keeping the trunk base dry
Through the seasons
A newly planted sugar pine needs deep soakings through its first few summers while its roots spread. Established trees need fewer, deeper summer soakings, since drought stress invites bark beetles. It stays evergreen, and its giant cones mature high in the crown before dropping. Rain usually covers the cool months in the Central Valley. WUCOLS rates sugar pine low water in the Central Valley. WUCOLS marks it as not suited to the north-central coast, the south coast and South Inland. It has not been evaluated for the high desert or the low desert.
In pots
Sugar pine becomes an enormous tree, so a pot is only a short stop for a seedling. Use a deep container with a gritty mix, check it 2 to 3 inches down every few days in summer, and water until it drains. Empty the saucer each time. Keep the pot in morning sun and afternoon shade in hot inland areas. Plant it out young, in a spot with room for a giant.
- A year
- 6.84 gal per sq ft
- Reference
- Sacramento climate table
- Counts
- Plant need, before sprinkler losses
Monthly water need by climate zone
Sugar Pine: gallons per square foot per month, by WUCOLS climate zone
| Month | N. Coast | C. Valley | S. Coast | S. Inland | Hi Desert | Lo Desert |
|---|---|---|---|---|---|---|
| Jan | – | 0.16 | – | – | – | – |
| Feb | – | 0.26 | – | – | – | – |
| Mar | – | 0.43 | – | – | – | – |
| Apr | – | 0.61 | – | – | – | – |
| May | – | 0.83 | – | – | – | – |
| Jun | – | 0.99 | – | – | – | – |
| Jul | – | 1.07 | – | – | – | – |
| Aug | – | 0.95 | – | – | – | – |
| Sep | – | 0.72 | – | – | – | – |
| Oct | – | 0.47 | – | – | – | – |
| Nov | – | 0.22 | – | – | – | – |
| Dec | – | 0.14 | – | – | – | – |
| Year | – | 6.84 | – | – | – | – |
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 low water in the Central Valley, like sugar pine. Plants that drink alike can share one valve and one schedule.
Olive TreesOlea europaea ssp. & cvs.low water, Central Valley1.07 gal/sq ft in July
Fig TreesFicus carica ssp. & cvs.low water, Central Valley1.07 gal/sq ft in July
Crape MyrtleLagerstroemia spp., hybrids & cvs.low water, Central Valley1.07 gal/sq ft in July
AloeAloe spp. & cvs.low water, Central Valley1.07 gal/sq ft in July
Pomegranate TreesPunica granatumlow water, Central Valley1.07 gal/sq ft in July
EucalyptusEucalyptus polyanthemoslow water, Central Valley1.07 gal/sq ft in July
Pine TreesPinus canariensislow water, Central Valley1.07 gal/sq ft in July
JunipersJuniperus spp. & cvs.low water, Central Valley1.07 gal/sq ft in July
Texas Red OakQuercus buckleyilow water, Central Valley1.07 gal/sq ft in July
Portuguese OakQuercus faginealow water, Central Valley1.07 gal/sq ft in July
Soapbark TreeQuillaja saponarialow water, Central Valley1.07 gal/sq ft in July
Necklace TreeSophora affinislow water, Central Valley1.07 gal/sq ft in July
Bailey AcaciaAcacia baileyanalow water, Central Valley1.07 gal/sq ft in July
Silver WattleAcacia dealbatalow water, Central Valley1.07 gal/sq ft in July
Green WattleAcacia decurrenslow water, Central Valley1.07 gal/sq ft in July
Sydney Golden WattleAcacia longifolialow water, Central Valley1.07 gal/sq ft in JulyTurn this into minutes on your water days
Every city page has a calculator that takes sugar pine, 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 pine need per day?
In July in the Central Valley, established sugar pine needs about 2.7 gallons a day under a 10 foot canopy and about 11 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 pine change across California?
Yes. WUCOLS rates sugar pine separately for each of the six California climate zones: not suited to this region in the North-Central Coastal zone, low water 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 evaluated in the High and Intermediate Desert zone, not evaluated in the Low Desert zone. The monthly table above shows how the same rating translates into different gallon amounts as reference evapotranspiration changes.
Why is it called sugar pine?
A sweet resin forms and hardens around fire scars on the trunk, which gave the tree its name. It also bears the longest cones of any conifer.
What is white pine blister rust?
It is a fungal canker disease of five-needle pines, including sugar pine, and it can kill both young and mature trees. Currants and gooseberries are its alternate hosts, so keep them away from a sugar pine. Prune out infected branches early.
Do bark beetles attack sugar pine?
Yes, several bark beetles attack it, and they favor trees weakened by drought, disease or injury. Watch for pitch tubes and boring dust on the trunk. Deep summer soakings help keep a garden tree vigorous.
How big does sugar pine get?
In the wild it reaches 200 feet or more, more massive than any other pine. Garden trees grow smaller but still need a large, open site. Plan for falling cones and a wide root zone.
Can sugar pine grow near a lawn?
A lawn keeps the soil wet near the trunk, and root rot is a known problem for this pine. Keep turf and frequent sprinklers well back from the trunk.
More plant watering guides
Sources
- WUCOLS IV plant water use classification for Pinus lambertiana, 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