How often to water sweet briar rose in California
In July on the north-central coast, established sweet briar rose in loam needs a deep soak only about once a month or less: about 8.8 gallons each time for a plant 4 feet across. Sweet briar rose, also sold as Rosa eglanteria, is a vigorous species rose from Europe and western Asia that grows 6 to 12 feet tall. Its prickly, arching canes carry leaves that smell of apples. Fragrant single pink flowers open once in late spring or early summer, followed by red-orange hips that last into winter. It suckers into thickets and needs sun and good drainage.
How often to water sweet briar rose, 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 several inches down around a young plant in summer means it needs a deep soak
- Black spots on yellowing leaves point to black spot, a fungal disease, rather than thirst
- Orange pustules under the leaves point to rose rust, and a white powder to powdery mildew
- Yellowing leaves and weak growth over soil that stays wet point to poor drainage
- Suckers rising away from the main plant come from its spreading habit, not from too much water
How to water it
- Water at the base of the canes with drip or a soaker
- Soak the root zone about a foot deep, then let the soil dry well before the next watering
- Plant in full sun with good air circulation, in soil that drains well
- Mulch with compost in late winter or early spring, keeping it off the canes
- Give it room to spread, and cut out suckers where you do not want a thicket
Through the seasons
Water a new rose regularly through its first summer so the roots can spread. Once established on the north-central coast, it gets by on winter rain and an occasional deep soak in dry summers. It leafs out in spring, blooms once in late spring or early summer, and keeps its hips into winter after the leaves drop. Pruning can wait until late winter so the hips stay on display. WUCOLS rates sweet briar rose low water on the north-central coast. WUCOLS has not evaluated it for the Central Valley, the south coast, South Inland, the high desert or the low desert.
In pots
Sweet briar rose grows too big and prickly for most pots. A young plant can still live in a large container for a season or two. Use a loam-based, well-drained mix and a pot with drainage holes. In summer heat, check the mix every couple of days and water once the top 2 inches feel dry. Water until it drains out, then empty the saucer. After leaf drop, water only when the mix has dried.
- A year
- no figure
- Reference
- Sacramento climate table
- Counts
- Plant need, before sprinkler losses
WUCOLS lists Sweet Briar Rose as not evaluated for the Central Valley zone, so no monthly figure is computed here.
Monthly water need by climate zone
Sweet Briar Rose: gallons per square foot per month, by WUCOLS climate zone
| Month | N. Coast | C. Valley | S. Coast | S. Inland | Hi Desert | Lo Desert |
|---|---|---|---|---|---|---|
| Jan | 0.15 | – | – | – | – | – |
| Feb | 0.21 | – | – | – | – | – |
| Mar | 0.35 | – | – | – | – | – |
| Apr | 0.47 | – | – | – | – | – |
| May | 0.58 | – | – | – | – | – |
| Jun | 0.64 | – | – | – | – | – |
| Jul | 0.64 | – | – | – | – | – |
| Aug | 0.6 | – | – | – | – | – |
| Sep | 0.5 | – | – | – | – | – |
| Oct | 0.35 | – | – | – | – | – |
| Nov | 0.19 | – | – | – | – | – |
| Dec | 0.12 | – | – | – | – | – |
| Year | 4.8 | – | – | – | – | – |
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 sweet briar rose. 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 sweet briar rose, 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 sweet briar rose need per day?
In July on the north-central coast, established sweet briar rose needs about 0.3 gallons a day for a plant 4 feet across and about 1.0 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 sweet briar rose change across California?
Yes. WUCOLS rates sweet briar rose separately for each of the six California climate zones: low water in the North-Central Coastal zone, not evaluated in the Central Valley zone, not evaluated in the South Coastal zone, not evaluated 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 do sweet briar leaves smell like apples?
The foliage is naturally apple scented, a trait that sets this rose apart. The scent is strongest when you brush past or handle the leaves.
Does sweet briar rose bloom more than once?
No. It flowers once, in late spring or early summer, with fragrant single blooms about 1 1/2 inches across. The red hips that follow carry the show into winter.
When should I prune sweet briar rose?
Wait until late winter if you want to keep the hips for winter color. Remove dead or crossing canes and unwanted suckers then. Wear thick gloves for the prickly stems.
Is sweet briar rose invasive?
It can be. It suckers into thickets and can become weedy or invasive. Plant it where you can mow or dig around it, and pull stray plants early.
Can you overwater sweet briar rose?
Yes. It needs well-drained soil, and ground that stays wet weakens it. Established plants on the north-central coast need only occasional deep soaks.
Can sweet briar rose grow in shade?
It tolerates part shade, but full sun with good air flow suits it best. Grow it in the sunniest open spot you have.
More plant watering guides
Sources
- WUCOLS IV plant water use classification for Rosa rubiginosa (Rosa eglanteria), 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