Do willows need a lot of water?

Yes, they thrive in moist to wet soil conditions.

Can I plant a willow near my house?

No, their aggressive root systems can damage pipes and foundations.

Plant guide

Willow.

Salix

Pronounced SAY-liks

Also known as Sallow

Salix babylonica — Photo by Tony Rebelo (CC BY-SA) via iNaturalist

Willows are graceful, moisture loving trees and shrubs known for their sweeping branches and slender leaves. They thrive near water sources and add a soft, elegant texture to any landscape. These plants are fast growers that appreciate plenty of space to spread their roots.

Another photo of Willow — Photo by Rob Cruickshank (CC BY-SA) via iNaturalist

At a glance

Care level: Easy
Plant type: Deciduous tree or shrub
Light: Full sun to partial shade
Indoor light: Bright indirect
Water: Every 2 to 5 days
Mature size: 10 to 25 meters
Growth rate: Fast
Hardiness: USDA 2 to 9
Bloom time: Early to mid spring

Care

Keep the soil consistently moist, as these plants suffer quickly if they dry out completely. Watch for pests like aphids or scale that enjoy the lush foliage. Prune during the dormant season to maintain shape and remove any dead wood.

Watering: Keep the soil constantly damp, never allowing it to dry out.
Feeding: Apply a balanced fertilizer once in early spring.
Pruning: Prune in late winter while the tree is dormant.
Repotting: Repot only if the plant is container grown and root bound.
Soil: Loamy, clay, or silty soil
Soil pH: Acidic to neutral
Temperature: -35 to 30°C
Humidity: 60 to 90%
Drought tolerance: Low
Lifespan: Perennial, typically 30 to 50 years.
Deer and rabbits: Low

Signs it needs repotting

Roots growing out of the drainage holes.
The plant dries out very quickly between waterings.
Stunted growth during the active season.

Safety

People: The bark and leaves are generally considered safe in moderation but may cause stomach upset if ingested in large quantities.
Pets: Willows contain salicin which can be toxic to cats and dogs if ingested.
Children: The long, flexible branches can be a tripping hazard or pose a risk of eye injury during play.
Contact allergens: The sap can cause mild skin irritation in sensitive individuals.
Airborne allergens: Willow pollen is a common seasonal allergen that can trigger hay fever.
Edibility: Willow bark contains salicin, which can cause reactions in people sensitive to aspirin.

How to identify it

Slender, lance shaped leaves
Flexible, drooping branches
Catkin flowers in spring
Thrives in moist soil
Often found near water

Height: 1.5 to 20m
Spread: 1 to 15m
Leaves: green, silver, blue-green, deciduous
Flowers: yellow, green, white, 1 to 5cm
Fruit: brown, white, Late spring

Problems to watch for

AphidsCommon
Willow BlightCommon
CankerUncommon
Root RotUncommon
RustUncommon
Scale InsectsUncommon
Tar SpotUncommon
Leaf ScorchRare

By symptom

Check your willow from a photo

Pocket Botanist looks at a photo of your plant and tells you what's wrong and what to try first.

Growing it

Propagation: cuttings, seed
When to plant: early spring, late autumn
Overwintering: Willows are generally cold hardy and do not require special winter protection. Simply prune away any dead or damaged branches in late winter.
In containers: Willows generally do not thrive in containers due to their massive root systems and high water needs.

Hardwood Cuttings

1. Take a cutting from a healthy branch in late winter.
2. Place the cutting directly into moist soil or a container of water.
3. Keep the cutting consistently wet until roots develop.

Plant willows in areas with poor drainage where other plants struggle to survive.

Grows well with

Dogwood — They share a love for moist soil and look beautiful together in winter.
Sedge — These grasses thrive in the same wet conditions as willow.

Similar species

Poplar — They are related and share a preference for damp, open spaces.

Science

Family: Salicaceae
Genus: Salix
Order: Malpighiales
Class: Magnoliopsida
Native range: Temperate and cold regions of the Northern Hemisphere.
Conservation: Most common willow species are not threatened, though some rare alpine varieties are protected.

Willows are pioneer species that stabilize riverbanks and provide essential cover for aquatic wildlife.

Value to wildlife: early season nectar source, larval host plant
Pollinators: bees, butterflies, beetles
Uses: ornamental landscaping, basket weaving, erosion control, natural medicine

Through the year

JFMAMJJASOND

Flowering

Fruiting

Foliage

Ecological indicators

Light: 7/9
Temperature: 4/9
Salinity: 2/9
Soil reaction: 5/9
Moisture: 8/9
Nutrients: 5/9

Taxonomy resolved against GBIF.

Questions people ask

Do willows need a lot of water?: Yes, they thrive in moist to wet soil conditions.
Can I plant a willow near my house?: No, their aggressive root systems can damage pipes and foundations.

Where the name comes from

The genus name Salix is the classical Latin name for the willow tree. The common name willow comes from the Old English word welig.

Good to know

Willows are famous for their ability to grow in very wet soil.
The wood is lightweight and flexible, making it perfect for cricket bats.
Some species can root from a simple stick pushed into damp ground.

Also in

Plants toxic to cats and dogs

Keep your willow growing

This page is a general guide. Save your plant in Pocket Botanist and you get care reminders timed for this plant, plus a care history that shows what worked.

Get the app

This guide was generated with AI and checked against GBIF taxonomy. It is general information, not horticultural or veterinary advice. Read about how we build these guides.