How often to water baby's breath in California
In July in the Central Valley, established baby's breath in loam needs a deep watering about every 5 days: about 1.5 gallons each time for a plant 2 feet across, about 1.9 gallons a week. Baby's breath is a mounding perennial, 2 to 3 feet tall and wide. From early summer into fall it covers itself in masses of tiny white flowers on thin, branching stems. It grows from large, fleshy roots that resent disturbance and wants full sun with sharply drained, neutral to alkaline soil. It self-sows freely and is invasive in parts of California.
How often to water baby's breath, 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 foot 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 3 to 4 inches down around the crown signals that baby's breath is ready for a soak
- Wilting stems and slowing bloom in a long dry spell can indicate the deep roots need water
- Yellowing stems and a soft crown in soggy soil can indicate overwatering, since it wants sharp drainage
- Fewer new flowers after the first flush often mean the plant needs cutting back, not more water
- Seedlings appearing around the clump show self-sowing, not a watering need
How to water it
- Water at the base of the clump, soaking deeply so moisture reaches the long, fleshy roots
- Let the top several inches of soil dry before the next soaking
- Plant in full sun in sandy or loamy, well-drained soil that is neutral to alkaline
- Leave established plants undisturbed, since digging around them damages the fleshy roots
- On grafted double-flowered plants, cut back above the graft union after bloom
Through the seasons
Keep new plants moist until they root in, then water deeply and less often. Established plants draw on their deep, fleshy roots and handle dry spells, taking a deep soak once the soil has dried well. Flowers run from early summer into fall, and cutting back after the first flush encourages more. The north-central coast is its one low water zone in WUCOLS. In the Central Valley, on the south coast and in South Inland, it rates moderate water. Both the high desert and the low desert are marked as not suited to it. Coastal and valley rain usually carries the dormant roots through winter.
In pots
Baby's breath can grow in a deep container, which also makes it easier to keep seed from spreading. Use a pot deep enough for its fleshy roots, with a gritty, well-drained mix. Check the mix 2 inches down every few days in summer heat and water when it is dry there. Water until excess drains, then empty the saucer. Cut stems back after flowering for another flush. In winter, water lightly while the top is dormant and the roots rest.
- A year
- 17.11 gal per sq ft
- Reference
- Sacramento climate table
- Counts
- Plant need, before sprinkler losses
Monthly water need by climate zone
Baby's Breath: 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 | 0.4 | 0.78 | 0.78 | – | – |
| Feb | 0.21 | 0.65 | 0.81 | 0.87 | – | – |
| Mar | 0.35 | 1.09 | 1.15 | 1.3 | – | – |
| Apr | 0.47 | 1.52 | 1.4 | 1.61 | – | – |
| May | 0.58 | 2.08 | 1.61 | 1.95 | – | – |
| Jun | 0.64 | 2.48 | 1.74 | 2.29 | – | – |
| Jul | 0.64 | 2.67 | 1.98 | 2.51 | – | – |
| Aug | 0.6 | 2.39 | 1.86 | 2.33 | – | – |
| Sep | 0.5 | 1.8 | 1.49 | 1.86 | – | – |
| Oct | 0.35 | 1.18 | 1.15 | 1.33 | – | – |
| Nov | 0.19 | 0.56 | 0.84 | 0.9 | – | – |
| Dec | 0.12 | 0.34 | 0.65 | 0.68 | – | – |
| Year | 4.8 | 17.11 | 15.5 | 18.41 | – | – |
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 moderate water in the Central Valley, like baby's breath. Plants that drink alike can share one valve and one schedule.
DahliasDahlia spp.moderate water, Central Valley2.67 gal/sq ft in July
FernsNephrolepis cordifolia (SHADE IN DESERT)moderate water, Central Valley2.67 gal/sq ft in July
DayliliesHemerocallis spp. & cvs.moderate water, Central Valley2.67 gal/sq ft in July
BegoniasBegonia & ssp. & cvs. (shade in the desert)moderate water, Central Valley2.67 gal/sq ft in July
Calla LiliesZantedeschia aethiopica SHADE IN DESERTmoderate water, Central Valley2.67 gal/sq ft in July
SageSalvia officinalis and cvs.moderate water, Central Valley2.67 gal/sq ft in July
Bicolor MonkshoodAconitum cammarummoderate water, Central Valley2.67 gal/sq ft in July
Garden MonkshoodAconitum napellusmoderate water, Central Valley2.67 gal/sq ft in July
Carpet BugleAjuga reptans (shade)moderate water, Central Valley2.67 gal/sq ft in July
Snowdrop WindflowerAnemone sylvestrismoderate water, Central Valley2.67 gal/sq ft in July
Mountain SandwortArenaria montanamoderate water, Central Valley2.67 gal/sq ft in July
Swamp MilkweedAsclepias incarnatamoderate water, Central Valley2.67 gal/sq ft in July
Orange MilkweedAsclepias tuberosamoderate water, Central Valley2.67 gal/sq ft in July
Greater MasterwortAstrantia majormoderate water, Central Valley2.67 gal/sq ft in July
Hardy BegoniaBegonia grandismoderate water, Central Valley2.67 gal/sq ft in July
Wax BegoniaBegonia semperflorensmoderate water, Central Valley2.67 gal/sq ft in JulySimilar plants that need less water 16
Rated lower than baby's breath in the Central Valley. Worth a look for a new bed or a lawn replacement.
AgapanthusAgapanthus orientalislow water, Central Valley1.07 gal/sq ft in July
GeraniumsPelargonium x hortorum and cvs.low water, Central Valley1.07 gal/sq ft in July
SalviaSalvia greggii ssp., cvs. & hybridslow water, Central Valley1.07 gal/sq ft in July
IrisesIris germanicalow water, Central Valley1.07 gal/sq ft in July
SucculentsEcheveria spp. & cvs.low water, Central Valley1.07 gal/sq ft in July
Russian SagePerovskia spp. & cvs.low water, Central Valley1.07 gal/sq ft in July
YarrowAchillea millefolium (non-native hybrids)low water, Central Valley1.07 gal/sq ft in July
Mountain AlyssumAlyssum montanumlow water, Central Valley1.07 gal/sq ft in July
Silver SageSalvia argentealow water, Central Valley1.07 gal/sq ft in July
Purple MulleinVerbascum phoeniceumlow water, Central Valley1.07 gal/sq ft in July
Silvery YarrowAchillea clavennaelow water, Central Valley1.07 gal/sq ft in July
Fern Leaf YarrowAchillea filipendulinalow water, Central Valley1.07 gal/sq ft in July
California Native YarrowAchillea millefolium (CA native cultivars)low water, Central Valley1.07 gal/sq ft in July
Woolly YarrowAchillea tomentosalow water, Central Valley1.07 gal/sq ft in July
Perennial HollyhockAlcea rosea cvs.low water, Central Valley1.07 gal/sq ft in July
Mountain Lady's MantleAlchemilla alpinalow water, Central Valley1.07 gal/sq ft in JulyTurn this into minutes on your water days
Every city page has a calculator that takes baby's breath, 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 often should I water baby's breath in summer?
In July, established baby's breath in loam needs a deep watering about every 5 days in the Central Valley, about every 7 days on the south coast and about every 6 days in the South Inland zone. Sandy soil holds less water, so waterings come closer together. Clay stretches them. Check the soil before each watering and skip one after a soaking rain.
How much water does baby's breath need per day?
In July in the Central Valley, established baby's breath needs about 0.3 gallons a day for a plant 2 feet across and about 1.1 gallons a day for a plant 4 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 baby's breath change across California?
Yes. WUCOLS rates baby's breath separately for each of the six California climate zones: low water in the North-Central Coastal zone, moderate water in the Central Valley zone, moderate water in the South Coastal zone, moderate water 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.
Is baby's breath invasive in California?
Yes. It self-sows freely and is considered invasive in parts of California and elsewhere in North America. Cut stems back after flowering to limit seed, and avoid planting it near open land or beaches.
Does baby's breath irritate skin?
It can. Handling it can irritate the skin, and repeated handling may irritate the eyes, nose and sinuses. Wear gloves when cutting large amounts for arrangements.
Why shouldn't I move my baby's breath?
It grows from large, fleshy roots that are easily damaged. Established plants are best left in place. If you want more, start new plants rather than dividing old ones.
Can you overwater baby's breath?
Yes. It needs well-drained soil, and a crown kept soggy can rot. Water deeply, then let the soil dry well.
How do I get more flowers from baby's breath?
Shear the stems after the first flowering to encourage another round. On grafted double forms, keep your cuts above the graft. Keep the soil from drying out completely while new stems grow.
More plant watering guides
Sources
- WUCOLS IV plant water use classification for Gypsophila paniculata, 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