Willow Forrest
General characteristics of a Willow Forrest
The goat willow (Salix caprea) is a tree in the willow family (Salicaceae). It is also called the water willow. The species is common in Europe and Northeast Asia, and not exclusively in damp locations. The goat willow is one of the species native to the Netherlands. S. caprea is usually seen as a shrub, but it can also be cultivated as a tree. In the wild, S. caprea will eventually develop into a tree.
The leaves are oval, dark green, and slightly hairy on the underside. The scattered leaves of the goat willow appear after flowering. Only the Eared Willow and the Grey Willow have leaves that are somewhat reminiscent of those of the goat willow.
The goat willow is one of the first to flower after winter, making it an important food source for many early insects. The goat willow has catkins covered with long, hairy bracts. They flower in March and April. The goat willow is dioecious. Male catkins are ovoid and initially covered with silvery hairs. Then, densely packed yellow stamens appear. Female catkins are slender, pale green with short, whitish styles. The female catkins are longer than the male. Both male and female flowers have a single nectary.
Characteristics
How to plant a Willow Forrest
Usually supplied as self-rooting cuttings of 1-3 m in length. Plant as deeply as possible, 40-60 cm into the soil, preferably until the soil is moist, ideally from mid-February to late March. There is less chance of the slits taking root in November or December.
How to harvest a Willow Forrest
Freshly pruned branches root easily in the soil or in water.
Caring for and pruning your Willow Forrest
Pruning
Pruning a willow is a crucial step in promoting its growth and maintaining 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 because the tree is less susceptible to stressors. Furthermore, it is easier to identify branches that need to be removed because the tree is defoliated. 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's important to remember that not all willows are suitable for pollarding, so it's advisable to consult a professional landscaper before undertaking this step.
Where does a Willow Forrest grow
In the Netherlands and Belgium, the species is common everywhere. It thrives in sunny to partially shaded, open places (pioneer) on moderately nutrient-rich, fairly dry to moderately moist, light soil (sand, loam, and loess). It grows primarily in forests, wooded areas, hedgerows, and cleared areas.
Its natural range extends throughout Europe, with the exception of the far north and the far south, and extends into northeast Asia. It is a pioneer plant on fallow land. S. caprea is more drought-tolerant than other native willow species. The species also tolerates more lime in the soil. Due to its susceptibility to rust, the species is less suitable as a tree in an urban environment. Its susceptibility to watermark disease is low. Therefore, although beautiful specimens can sometimes be found in nature, S. caprea proves unsuitable as a tree in an urban environment. However, as a native shrub, capable of growing into a tree if necessary, the species is indispensable.
General
| Origin |
Native
|
| Tree Type | Deciduous tree |
Length and Age
| Length in about 10 years | 1 Up to 4 Meter |
| Reproductive Maturity in How Many Years | 0 Up to year |
| Maximum Age | 40 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 | December tot February |
| Leaf Shapes | Egg-shaped |
| Easy to prune | Yes |
Bark Characteristics Seedling (50-200cm)
| Lenticels | Yes |
| Colour |
Bud Characteristics Seedling (50-200cm)
| Colour | |
| Bud Position |
Varied
|
| Bud Shape |
Egg-shaped
|
Other
| Root | Information not available |
| Bloom |
Has catkins
|
| Wind sensitivity | Not sensitive to (sea) wind |
Diseases
| Sensitive to the Following Diseases |
Watermark disease (Willow)
|
Harvest/recognition in winter
The bud scales are yellow-brown to reddish, and also initially hairy but soon become bare. The buds with catkins are noticeably larger. The bark of young trees is smooth and gray with diamond-shaped lenticels. In older trees, vertical fissures develop that connect the lenticels. It has attractive yellow and green catkins between 3 and 7 centimeters long; it grows upwards; in winter, the tree is bare, and the weeping shape of the branches is clearly visible.
Light requirement of the Willow Forrest
Suitable soil types for the Willow Forrest
| Soil type | Suitability |
|---|---|
| light clay |
|
| heavy clay |
|
| sand |
|
| peatland |
|
| Loam |
|
| Moerig op zand |
|
| Lichte zavel |
|
| Zware zavel |
|
Humidity
Suitable acidity level for the Willow Forrest
Nutritional needs of the Willow Forrest
| 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
| 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
| Landscape | Suitability |
|---|---|
| Agroforestry |
|
| Hedge |
|
| Hedge |
|
| Forest |
|
| Feeding hedge |
|
| Back yard |
|
| Small back yard |
|
| Solitary |
|
| Wood wall |
|
Cultural-historical value
Insects
| How many insects typically live on this tree/plant? | 450 |
| Which insect groups live on this tree/plant? |
Bees
Butterflies
Beetles
Bumblebees
|
| Are there insects dependent on this species? | No |
| Which insect species are dependent on this tree/plant? |
Red-tipped Clearwing
Cryptorrhynchus laphatii
Goat Moth
spotted willow leaf beetle
|
Birds
| Average number of birds per tree/plant? | |
| Which bird groups live on this tree/plant? |
tits
|
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?
| Mammal | Suitability |
|---|---|
| Sheep |
|
| Horse |
|
| Cow |
|
| Goat |
|
| Deer |
|
| Beavers |
|
| Badgers |
|
| Squirrel |
|
| Ferret |
|
| Herbivorous rodents |
|
| Dog |
|
| Cat |
|
| Chicken |
|
| Roe deer |
|
| Mouse |
|
| Human |
|
| Pig |
|
| Foxes |
|
| Wild boar |
|
Explanation
Explanation
Edibility
- Toxic: This tree or shrub is toxic to mammals and absolutely unsuitable for consumption.
- Very unsuitable: This tree or shrub is unsuitable for consumption by mammals and can be harmful.
- Unsuitable: This tree or shrub is generally unsuitable for consumption by mammals and can have adverse effects.
- Moderately suitable: This tree or shrub is moderately suitable as food for mammals, possibly with certain risks or limitations.
- Suitable: This tree or shrub is generally suitable as food for mammals, with little to no risks.
- 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
Information not available
Trunk Diameter
(dg) (1.30m) of the basal area median tree.
Information not available
Aboveground Biomass
in whole kgInformation not available
Belowground Biomass
in whole kgInformation 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
| 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 Forrest looks like
This is what a Willow Forrest in bloom looks like
This is what the bud of a Willow Forrest looks like
This is what the leaf of a Willow Forrest looks like