Willow (Grey)

Do you want to plant a Willow (Grey)? Here you will find all the information you need on how to best plant the Willow (Grey), and on pruning and caring for your Willow (Grey).

General characteristics of a Willow (Grey)

Grey willow is a shrub, or rarely a small tree, whose branches have a grayish, felt-like hairiness. The entire plant has a grayish appearance, which is also reflected in the name: cinerea means ash-colored or ashen. A shrub that can grow up to 10 m tall, it spreads widely and resembles the pussy willow. The leaves are silvery and slightly hairy on the underside. It is a fast-growing species that often grows in damp areas. The grey willow grows mainly in damp areas such as swamps, along rivers, and in moist forests. The catkins are a valuable food source for bees and other insects. 

While willow species are recognizable as a group, the species are not always easy to distinguish. Grey willow is a truly difficult and somewhat variable species. The pussy willow and the eared willow, in particular, strongly resemble grey willow. The former is primarily a tree, larger than the latter in every respect, including leaf length and width. The leaves of the Goat Willow resemble apple leaves, and the stipules on the young branches are larger. The second, the Eared Willow, is smaller in every respect, with a leaf less than 3 cm long, noticeably wrinkled with a wavy margin. The leaf is dull blue-green on top, gray and felty-hairy on the underside. The young branches, in particular, but also the older ones, have short, felty hairs.


How to plant a Willow (Grey)

Plant the cuttings 30-40 cm deep into the soil. Another option is to first place the cuttings in water to help them root.

How to harvest a Willow (Grey)

Freshly pruned branches can be used for planting or rooting.

Caring for and pruning your Willow (Grey)

The willow is a hardy shrub known for its adaptability to various environments, making it relatively easy to care for. Key care requirements include regular watering during dry spells and annual pruning to maintain shape and encourage healthy growth. Special care for the willow is to provide well-draining soil to prevent root rot and ensure there is sufficient space, as it can grow quite large. 

The best pruning periods for willows are early spring, late autumn, and winter. For pollarding, prune at least once every three years. 

Pruning 

Pruning a willow can promote growth and help it maintain its shape. Generally, the best time to prune a willow is during late winter to early spring, when the tree is dormant. This is usually between January and March, depending on the specific climate zone. Pruning a willow during this period minimizes the risk of disease and infection, as the tree is less susceptible to stressors. Furthermore, it's easier to identify branches that need to be removed because the tree's foliage is absent. If you notice your willow is becoming overgrown, showing signs of disease, or simply needs a new shape, now is the ideal time to take action. 

Pollarding 

Pollarding a willow is a traditional pruning method used to rejuvenate the tree and extend its lifespan. The best time to pollard a willow is in late autumn or early winter, usually between November and December. During this period, the tree has shed its leaves and is in a dormant state. Pollarding a willow involves cutting the branches back to the trunk, creating a gnarled, characteristic shape. This process stimulates the growth of new shoots and creates a denser, healthier structure. It is important to remember that not all willows are suitable for pollarding, so it is advisable to seek advice from a professional landscaper before undertaking this step.

Where does a Willow (Grey) grow

Grey willow is strongly associated with moist locations, but not limited to acidic soils like eared willow. We find this species in moist forests, dune slacks, lowland peatlands, along rivers, and in stream valleys. The species is very common in the Netherlands, but is somewhat less common in the northern clay areas. In Belgium, it is fairly common to quite rare. The species also occurs in Europe (except the westernmost part), in the temperate regions of Asia, and in North Africa.


General

Origin
Native
Tree Type Deciduous tree

Length and Age

Length in about 10 years 2 Up to 4 Meter
Reproductive Maturity in How Many Years 0 Up to year
Maximum Age 50 Up to 100 year
Required Space Up to m2
Growth Rate

Reproduction

Tree is Self-Pollinating No
Reproduction Method
To cut (cutting is between 5 and 50 cm)
To be pollarded (the slit is approximately 2m)
Makes seedlings
Reproduction rate

Reproduction rate

1. Very low reproduction rate. The plant hardly spreads, has few seeds or vegetative spread (e.g., trees with heavy seeds).
2. Low reproduction rate. Spread via limited seed production or specific conditions required
3. Average reproduction rate. Regular spread, depending on wind, water, or animals, at a moderate speed (e.g., dandelion).
4. High reproduction rate. Many seeds and multiple spread strategies (wind, birds, vegetative). Quickly colonizes open spaces
5. Very high reproduction rate. Invasive species that spread explosively over large distances (e.g., Japanese knotweed).

Pruning Period

This Tree is Evergreen No
Summer June tot July
Winter October tot March
Leaf Shapes Elongated
Easy to prune Yes

Bark Characteristics Seedling (50-200cm)

Colour

Bud Characteristics Seedling (50-200cm)

Colour
Bud Position
Spread out
Bud Shape
Egg-shaped

Other

Root
Superficial rooting
Bloom
Has catkins
Wind sensitivity Not sensitive to (sea) wind

Diseases

Sensitive to the Following Diseases
Watermark disease (Willow)

Harvest/recognition in winter

The branches and twigs are often crooked, grayish-green or brownish-gray. The youngest twigs are often lightly hairy. The buds are brown, ovoid, small, and lightly hairy. The buds are scattered along the branches. In young specimens, the bark is smooth and grayish; in older specimens, it is rougher and often has large grooves and fissures.

Light requirement of the Willow (Grey)

The Willow (Grey) thrives best under these light conditions.
  • Full sun
  • Partial shade

  • Suitable soil types for the Willow (Grey)

    In this overview, you can find which soil types are best for the Willow (Grey) to grow.
    Soil type Suitability
    light clay
    heavy clay
    sand
    peatland
    Loam
    Moerig op zand
    Lichte zavel
    Zware zavel

    Humidity

    A (ground)water level indicates how deep the groundwater usually is below the surface. The higher the Roman numeral, the deeper the groundwater.
    I
    II
    III
    IV
    V
    VI
    VII
    VIII

    Suitable acidity level for the Willow (Grey)

    Each soil type has a certain acidity level, measured in pH values. You can plant the Willow (Grey) in soil that falls within this range:
    0.0
    0.5
    1.0
    1.5
    2.0
    2.5
    3.0
    3.5
    4.0
    4.5
    5.0
    5.5
    6.0
    6.5
    7.0
    7.5
    8.0
    8.5
    9.0

    Nutritional needs of the Willow (Grey)

    Some soil types offer more nutritional richness than others.
    1.0
    1.5
    2.0
    2.5
    3.0
    3.5
    4.0
    4.5
    5.0
    5.5
    6.0
    6.5
    7.0
    7.5
    8.0
    8.5
    9.0
    1. Very nutrient-poor soil
    2. Very nutrient-poor to nutrient-poor soil
    3. Nutrient-poor soil
    4. Nutrient-poor to moderately nutrient-rich soil
    5. Moderately nutrient-rich soil
    6. Moderately nutrient-rich to nutrient-rich soil
    7. Nutrient-rich soil
    8. Extremely nutrient-rich soil
    9. Very extremely nutrient-rich soil

    Humidity

    Does Willow (Grey) like to have its roots in extremely dry (1.0) or wet (9.0) soil?
    1.0
    1.5
    2.0
    2.5
    3.0
    3.5
    4.0
    4.5
    5.0
    5.5
    6.0
    6.5
    7.0
    7.5
    8.0
    8.5
    9.0
    1. Extremely dry soils
    2. Extremely dry to dry soils
    3. Dry soils
    4. Dry to dry/moist soils
    5. Dry/moist soils
    6. Dry/moist to moist soils
    7. Moist soils
    8. Moist to wet soils
    9. Wet soils

    To be applied in landscapes

    0 = not filled in, 1 = unsuitable, 5 = very suitable
    Landscape Suitability
    Agroforestry
    Hedge
    Hedge
    Forest
    Feeding hedge
    Back yard
    Small back yard
    Solitary
    Wood wall

    Cultural-historical value

    0 = not filled in, 1 = low, 9 = high

    Insects

    How many insects typically live on this tree/plant? 450
    Which insect groups live on this tree/plant?
    Bees
    Butterflies
    Hoverflies
    Beetles
    Bumblebees
    Are there insects dependent on this species? No
    Which insect species are dependent on this tree/plant?

    Birds

    Average number of birds per tree/plant?
    Which bird groups live on this tree/plant?

    Mammals

    Average number of mammals per tree/plant?
    Which mammal groups live on this tree/plant?
    Are there mammals dependent on this species? No
    Which mammal species are dependent on this tree/plant?

    Bloom Period

    Summer March Up to April

    Tree Species

    Tree species that this tree prefers to grow with

    Suitable for mammals?

    toxic, 1 = unsuitable, 5 = very suitable
    Mammal Suitability
    Beavers
    Badgers
    Squirrel
    Ferret
    Goat
    Herbivorous rodents
    Deer
    Dog
    Cat
    Chicken
    Cow
    Human
    Mouse
    Horse
    Roe deer
    Sheep
    Pig
    Foxes
    Wild boar

    Explanation

    Explanation

    Edibility

    • Toxic: This tree or shrub is toxic to mammals and absolutely unsuitable for consumption.
    1. Very unsuitable: This tree or shrub is unsuitable for consumption by mammals and can be harmful.
    2. Unsuitable: This tree or shrub is generally unsuitable for consumption by mammals and can have adverse effects.
    3. Moderately suitable: This tree or shrub is moderately suitable as food for mammals, possibly with certain risks or limitations.
    4. Suitable: This tree or shrub is generally suitable as food for mammals, with little to no risks.
    5. Very suitable: This tree or shrub is very suitable as food for mammals, safe, and of high nutritional value.


    Trunk Height

    Average Trunk Height (hg) of the basal area median tree

    from - to, in whole meters, average

    Information not available

    Trunk Diameter

    (dg) (1.30m) of the basal area median tree.

    from - to, in whole centimeters, average

    Information not available

    Aboveground Biomass

    in whole kg

    Information not available

    Belowground Biomass

    in whole kg

    Information not available

    Substance Binder

    Which substances can be bound or absorbed?
    CO2
    Particulate matter

    Carbon Attraction (kf)

    (dg) (1.30m) of the basal area median tree Deciduous Trees (Kf = 0,48)

    Warming Resistance

    This tree is well resistant to the warming (plus 3 degrees) of our climate and fits into the future of our climate (heat and drought resistant). Yes
    CO2
    Particulate matter

    CO2

    0. not filled in
    1. no storage
    2. low storage
    3. moderate storage
    4. high storage
    5. very high storage

    Fine Dust

    0. not filled in
    1. no capture capacity
    2. low capture capacity
    3. moderate capture capacity
    4. high capture capacity
    5. very high capture capacity

    This is what an adult tree Willow (Grey) looks like

    A mature grey willow tree
    Grey willow in winter

    This is what a Willow (Grey) in bloom looks like

    Catkins of the grey willow tree ( feminin )
    Catkins of the grey willow tree ( masculin )
    Catkin of the grey willow tree

    This is what the leaf of a Willow (Grey) looks like

    Leaf of the grey willow tree
    Leaf of the grey willow tree - left - and the forrest willow tree - right -