How often to water naked lady in California
In July in the Central Valley, established naked lady needs about 0.2 gallons a week for a plant 2 feet across. Naked lady is a South African bulb that grows long, strap-shaped leaves through the cool, rainy months. The leaves die back in late spring. In late summer, bare stalks rise from dry ground and open clusters of fragrant rosy-pink trumpets. It thrives on winter rain and needs little or no summer water once settled.
How often to water naked lady, 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: the plant’s WUCOLS rating times your city’s climate for the month, over the area the plant covers. Skip a watering after a good soaking rain.
How to tell it needs water
- Leaves yellowing and dying back in late spring mark the start of dormancy, not a need for water
- Leaves flagging in a long dry winter spell, with soil dry 3 inches down, signal that a growing clump can use a soak
- Bulbs going soft or rotting in a bed that gets summer irrigation point to too much water during dormancy
- Flower stalks rising from bare, dry ground in late summer are normal and need no extra water to open
- Sticky leaves or fine webbing point to aphids, mealybugs or spider mites, not thirst
How to water it
- Plant bulbs in fall with the top of each bulb just above the soil line, in full sun and well-drained soil
- Water once at planting, then let winter rain carry the leaves, adding a soak only in a long dry spell
- When you do water, soak the top 8 inches of soil and let it dry fully afterward
- Turn off irrigation to the clump once the leaves die back in late spring
- Keep naked ladies out of beds that are watered all summer, such as lawns or vegetable plots
Through the seasons
Naked lady runs on a reversed calendar. Leaves emerge in fall and grow through winter, then die back in late spring. The bulbs rest through summer, and in late summer leafless stalks carry the pink flowers. In coastal California it naturalizes on rainfall alone, and the Central Valley calls for very little irrigation either. Desert plantings may need a soak in a dry winter. WUCOLS rates naked lady very low water on the north-central coast, in the Central Valley, on the south coast and in South Inland. It rates low water in the high desert and the low desert.
In pots
Naked lady grows in a large pot if the mix drains fast and the pot can stay dry in summer. Set bulbs with their tops just above the mix in fall. While the leaves are up, water when the top 2 inches of mix are dry. Let it drain freely, with nothing left in the saucer. Stop watering when the leaves yellow in spring. Keep the pot away from summer sprinklers, and expect flower stalks from the dry pot in late summer.
- A year
- 1.71 gal per sq ft
- Reference
- Sacramento climate table
- Counts
- Plant need, before sprinkler losses
Monthly water need by climate zone
Naked Lady: gallons per square foot per month, by WUCOLS climate zone
| Month | N. Coast | C. Valley | S. Coast | S. Inland | Hi Desert | Lo Desert |
|---|---|---|---|---|---|---|
| Jan | 0.04 | 0.04 | 0.08 | 0.08 | 0.3 | 0.31 |
| Feb | 0.05 | 0.07 | 0.08 | 0.09 | 0.37 | 0.37 |
| Mar | 0.09 | 0.11 | 0.11 | 0.13 | 0.58 | 0.61 |
| Apr | 0.12 | 0.15 | 0.14 | 0.16 | 0.76 | 0.78 |
| May | 0.15 | 0.21 | 0.16 | 0.2 | 0.95 | 0.98 |
| Jun | 0.16 | 0.25 | 0.17 | 0.23 | 1.14 | 1.12 |
| Jul | 0.16 | 0.27 | 0.2 | 0.25 | 1.22 | 1.14 |
| Aug | 0.15 | 0.24 | 0.19 | 0.23 | 1.12 | 1.04 |
| Sep | 0.12 | 0.18 | 0.15 | 0.19 | 0.86 | 0.83 |
| Oct | 0.09 | 0.12 | 0.11 | 0.13 | 0.58 | 0.6 |
| Nov | 0.05 | 0.06 | 0.08 | 0.09 | 0.37 | 0.38 |
| Dec | 0.03 | 0.03 | 0.07 | 0.07 | 0.26 | 0.27 |
| Year | 1.2 | 1.71 | 1.55 | 1.84 | 8.51 | 8.43 |
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 2
Rated very low water in the Central Valley, like naked lady. Plants that drink alike can share one valve and one schedule.
Turn this into minutes on your water days
Every city page has a calculator that takes naked lady, 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 should I water naked lady in summer?
In July, established naked lady needs about 0.2 gallons in the Central Valley, 0.1 gallons on the south coast and 0.2 gallons in the South Inland zone each week, for a plant 2 feet across. Water deeply and let the top of the soil dry before the next watering. Skip a watering after a soaking rain.
How much water does naked lady need per day?
In July in the Central Valley, established naked lady needs about 0.0 gallons a day for a plant 2 feet across and about 0.1 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 naked lady change across California?
Yes. WUCOLS rates naked lady separately for each of the six California climate zones: very low water in the North-Central Coastal zone, very low water in the Central Valley zone, very low water in the South Coastal zone, very low water in the South Inland zone, low water in the High and Intermediate Desert zone, low water in the Low Desert zone. The monthly table above shows how the same rating translates into different gallon amounts as reference evapotranspiration changes.
Why does naked lady bloom without leaves?
Its leaves grow in the cool season and die back by late spring. The flower stalks rise in late summer while the bulb is still leafless, which gives the plant its name. Fresh leaves follow in fall.
When should I plant naked lady bulbs?
Plant them in fall with the top of each bulb just above the soil line, 6 to 12 inches apart. Water once to settle the soil. Where winter rain is reliable, it then supplies what the new leaves need.
Is naked lady poisonous?
Yes. The plant is toxic to cats, dogs and horses, and it may be poisonous to people. Keep pets from digging or chewing the bulbs.
How cold can naked lady handle?
The bulbs are hardy to about 15 to 20 degrees F. Protect potted bulbs in a hard freeze, since pots chill faster than the ground.
Can naked lady grow in a lawn?
A watered lawn suits it poorly, because the bulbs want a dry summer rest. Choose a sunny bank, rock garden or border edge that gets little summer water.
More plant watering guides
Sources
- WUCOLS IV plant water use classification for Amaryllis belladonna, 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