WateringTimesWatering plan, $19
Viburnum rhytidophyllum, WUCOLS IV

How often to water leatherleaf viburnum in California

In July in the Central Valley, established leatherleaf viburnum in loam needs a deep watering about every 8 days: about 8.8 gallons each time for a plant 4 feet across, about 7.6 gallons a week. Leatherleaf viburnum is an evergreen shrub from China with long, wrinkled, dark green leaves that are fuzzy on both sides. Flat clusters of yellowish white flowers open in late spring from buds formed the previous summer and fall, and bright red berries can last into winter. It likes average to moist, acidic, well-drained soil and shelter from winter winds.

ShrubRated for 4 of 6 zones

How often to water leatherleaf viburnum, month by month

Your city
Plant width
4 ft
Your soil

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.

Every month, on your water days. The personal plan prints this for leatherleaf viburnum and the rest of your yard, on the days your water supplier allows.Get the plan for $19

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.

Which soil do you have?

Dig down a few inches, take a handful of moist soil and squeeze it.

  • Sandy: gritty, falls apart when you open your hand, will not form a ball.
  • Loam: forms a soft ball that crumbles when you poke it.
  • Clay: forms a firm, sticky ball and squeezes out into a ribbon between thumb and finger.

Still not sure? Pick loam. Most garden beds sit between sand and clay.

How to measure plant width

A shrub with its width marked from one side to the other and the circle under it shaded blue

Measure across the plant, from the tips of the leaves on one side to the tips on the other.

Water the whole area the plant covers, shown in blue. The gallons here cover that area.

A wider plant means more gallons each watering, not more waterings. While it is young, measure again each spring.

How to tell it needs water

  • Push a finger beside the stems: dry soil past the second knuckle in summer means leatherleaf viburnum wants water
  • Big leaves drooping and curling in afternoon heat suggest thirst
  • Leaf margins browning after a hot, windy spell can follow dry soil
  • Yellowing between the veins in alkaline soil points to soil chemistry, not water

How to water it

  • Water deeply at the root zone with drip or a soaker
  • Let the upper few inches dry before watering again
  • Plant in average to moist, acidic, well-drained soil
  • Shelter it from cold, drying winter winds
  • Keep watering through late summer, when next year's buds form

Through the seasons

Give a new shrub steady water through its first summer. Established plants want moderate, deep watering in the dry months, including late summer, when flower buds form for next spring. It stays evergreen, blooms in late spring and holds red berries into winter. On the north-central coast, in the Central Valley, on the south coast and in South Inland, WUCOLS gives leatherleaf viburnum a moderate water rating. The high desert and the low desert have no WUCOLS evaluation for it.

In pots

Leatherleaf viburnum can grow in a large container for some years if the pot is wide and heavy. Use an acidic, well-drained mix. When the upper couple of inches feel dry, soak until water runs out the base. In summer, check pots every few days, since the big leaves use water fast. Do not leave water in the saucer. In winter, water when the mix dries and rain falls short.

1 Your climate zone six WUCOLS zones, each from its own reference city
2.67gal per sq ft in JulyModerate water use in the Central Valley zone
A year
17.11 gal per sq ft
Reference
Sacramento climate table
Counts
Plant need, before sprinkler losses
0.671.32.02.70.4JAN0.65FEB1.09MAR1.52APR2.08MAY2.48JUN2.67JUL2.39AUG1.8SEP1.18OCT0.56NOV0.34DEC0.671.32.02.70.4JFM1.52AMJ2.67JAS1.18OND
Gallons per square foot per month, Central Valley. Peak 2.67 in Jul, 17.11 a year.

Monthly water need by climate zone

Leatherleaf Viburnum: gallons per square foot per month, by WUCOLS climate zone

MonthN. CoastC. ValleyS. CoastS. InlandHi DesertLo Desert
Jan0.370.40.780.78––
Feb0.530.650.810.87––
Mar0.871.091.151.3––
Apr1.181.521.41.61––
May1.462.081.611.95––
Jun1.612.481.742.29––
Jul1.612.671.982.51––
Aug1.492.391.862.33––
Sep1.241.81.491.86––
Oct0.871.181.151.33––
Nov0.470.560.840.9––
Dec0.310.340.650.68––
Year1217.1115.518.41––

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 leatherleaf viburnum. Plants that drink alike can share one valve and one schedule.

Similar plants that need less water 16

Rated lower than leatherleaf viburnum in the Central Valley. Worth a look for a new bed or a lawn replacement.

Minutes for your sprinklers

Turn this into minutes on your water days

Every city page has a calculator that takes leatherleaf viburnum, 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 leatherleaf viburnum in summer?

In July, established leatherleaf viburnum in loam needs a deep watering about every 8 days in the Central Valley, about every 11 days on the south coast and about every 9 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 leatherleaf viburnum need per day?

In July in the Central Valley, established leatherleaf viburnum needs about 1.1 gallons a day for a plant 4 feet across and about 4.3 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 leatherleaf viburnum change across California?

Yes. WUCOLS rates leatherleaf viburnum separately for each of the six California climate zones: moderate 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 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.

When does leatherleaf viburnum bloom?

It blooms in late spring. The flower buds form the summer and fall before and are ornamental all winter. Do not prune them off.

Does leatherleaf viburnum have berries?

Yes, bright red berries follow the flowers and can last into winter. They add color in the cool months. Leave them on the shrub.

What soil does leatherleaf viburnum need?

It prefers average to moist, acidic, well-drained soil. Alkaline soil may cause yellow leaves. Add acid mulch.

Is leatherleaf viburnum good for hedges?

Yes, it works in mixed shrub borders and as a hedge. Its large leaves give a bold look. Space plants to allow air flow.

Why did my leatherleaf viburnum lose leaves in winter?

Cold winter wind can cause dieback. Plant it where it is sheltered. Prune damaged growth in spring.

More plant watering guides

Sources