How often to water foxberry in California
In July on the north-central coast, established foxberry in loam needs a deep watering about every 13 days: about 8.8 gallons each time for a plant 4 feet across, about 4.6 gallons a week. Foxberry, also called lingonberry, is a low, mat-forming evergreen shrub with small glossy leaves and tart red berries. Its shallow roots sit near the soil surface and spread by rhizomes into a widening patch. It needs consistently moist, acidic soil, but soggy, waterlogged ground favors root rot.
How often to water foxberry, 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 the plant covers, and skip a watering after a good soaking rain.
How to tell it needs water
- Soil dry at the surface above foxberry's shallow roots signals it needs water sooner than a deeper rooted shrub
- Leaves curling or dulling in hot sun can indicate the shallow root zone has dried out
- Wilting or blackened stems over soil that stays saturated can indicate root rot from overwatering
- Leaf yellowing across the patch in heavy, slow draining soil can indicate the roots are sitting too wet
How to water it
- Water foxberry's shallow root zone with drip or a fine spray rather than a deep soak meant for larger shrubs
- Keep the top few inches of soil consistently damp without letting water pool around the crown
- Use acidic, peaty soil amended with organic matter, since foxberry struggles in heavy clay
- Mulch with pine needles or bark to protect the shallow roots and hold surface moisture
- Widen the watered area as rhizomes spread the patch outward
Through the seasons
A newly planted foxberry needs consistent moisture while its shallow roots spread into the bed. Established plants keep their glossy leaves year round and need steady moisture rather than deep, spaced-out soakings. Cultivated plants bloom twice, in early spring and again in midsummer, and ripen berries in late summer and fall. Do not let the soil dry out completely, since dry soil concentrates salts these roots are sensitive to. Winter rain can help meet its needs on the north-central coast, where it grows in gardens. WUCOLS rates foxberry moderate water on the north-central coast and has not evaluated it for the Central Valley. WUCOLS marks it as not suited to the south coast, South Inland, the high desert and the low desert.
In pots
Foxberry suits a wide, shallow container filled with acidic, well-drained mix, since its roots stay near the surface. Check the top inch often during California summer heat, as a pot in full sun can dry out quickly. Water until it drains through the holes, then empty the saucer so the shallow roots do not sit in standing water. Feed with an acid-forming fertilizer suited to its plant family. In winter, water less as growth slows, keeping the evergreen leaves from drying out completely.
- A year
- no figure
- Reference
- Sacramento climate table
- Counts
- Plant need, before sprinkler losses
WUCOLS lists Foxberry as not evaluated for the Central Valley zone, so no monthly figure is computed here.
Monthly water need by climate zone
Foxberry: 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 evaluated in the Central Valley, like foxberry. Plants that drink alike can share one valve and one schedule.
Formosa Sugar PalmArenga englerinot rated, Central Valleyno Central Valley rating
Chilean Feather BambooChusquea culeou (C. breviglumis)not rated, Central Valleyno Central Valley rating
BlackbrushColeogyne ramosissimanot rated, Central Valleyno Central Valley rating
Glaucous Scorpion VetchCoronilla valentina glaucanot rated, Central Valleyno Central Valley rating
Willowleaf CotoneasterCotoneaster salicifoliusnot rated, Central Valleyno Central Valley rating
Madagascar SagoCycas thouarsii (SHADE)not rated, Central Valleyno Central Valley rating
Irish HeathDaboecia cantabricanot rated, Central Valleyno Central Valley rating
Butterfly PalmDypsis lutescens (Areca)not rated, Central Valleyno Central Valley rating
Umbrella BambooFargesia murielaenot rated, Central Valleyno Central Valley rating
Blue Fountain BambooFargesia nitida (Sinarundinaria nitida) (BAMBOO)not rated, Central Valleyno Central Valley rating
Prickly HeathGaultheria mucronata (Pernettya mucronata)not rated, Central Valleyno Central Valley rating
OtterbossieGossypium harknessiinot rated, Central Valleyno Central Valley rating
Box-leaved HollyIlex crenatanot rated, Central Valleyno Central Valley rating
Bellyache BushJatropha gossypiifolianot rated, Central Valleyno Central Valley rating
Mountain LaurelKalmia latifolianot rated, Central Valleyno Central Valley rating
Barbados CherryMalpighia glabranot rated, Central Valleyno Central Valley ratingTurn this into minutes on your water days
Every city page has a calculator that takes foxberry, 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 foxberry need per day?
In July on the north-central coast, established foxberry needs about 0.7 gallons a day for a plant 4 feet across and about 2.6 gallons a day for a plant 8 feet across. Give it in deep waterings spread days apart rather than a little every day, so the whole root zone gets wet.
Does watering for foxberry change across California?
Yes. WUCOLS rates foxberry separately for each of the six California climate zones: moderate water in the North-Central Coastal zone, not evaluated 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.
Why are my foxberry leaves turning brown at the edges?
Check whether the shallow root zone has dried out, since these roots sit close to the surface. Reflected heat near pavement or a sunny wall can worsen this quickly. A consistent moisture check matters more than a deep soak here.
Can foxberry handle regular garden soil?
It prefers acidic, peaty soil similar to other members of its family. Standard alkaline garden soil can limit growth even with careful watering. Amending the bed before planting works better than adjusting water afterward.
Why is my foxberry not producing berries?
Most cultivars need a different pollinizer cultivar planted nearby to set a good crop. Frost during bloom can also ruin flowers. Check pollination and frost before assuming a watering problem.
Is foxberry the same plant as lingonberry?
Yes, foxberry and lingonberry are common names for the same species. Cowberry is another name used in some regions. Care and watering needs are identical regardless of the name used.
Can foxberry grow in a hot inland California yard?
It is not rated for hot inland or desert conditions in this guide. A cooler, humid coastal setting suits its shallow, moisture sensitive roots better. Consider a shaded, well ventilated spot if grown outside its rated zone.
Why do my foxberry stems look blackened near the soil line?
This can point to root rot from soil that stays too wet, especially in heavy ground. Check drainage before giving the shallow roots more water. Improving drainage often matters more than a fungicide.
More plant watering guides
Sources
- WUCOLS IV plant water use classification for Vaccinium vitis-idaea, 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