Salix acutifolia 'Blue Streak'
Caspian willow
- Height × spread
- 3.5m × 2m
- Position
- Full sun
- Hardiness
- Very cold to -20C (RHS H6)
- Flowers
- Spring
Availability
Please ask in store about availability
Many plants are seasonal. Call 01234 567890 to check current stock.
About this plant
This makes a large shrub or a small tree. The young bark is a curious blue-grey colour since the dark mahogany stems are covered in a blue-white bloom. It can become quite large, reaching around 4m (13ft) height if left to go its own way. There are furry catkins in spring and long slim leaves.
- Flower colour
- Grey
- Foliage colour
- Green
- Stem colour
- Blue, Grey
- Variegated
- No
- Scent
- No
- Shape
- Fan
- Height
- 3.5m
- Spread
- 2m
- Height in 10 years
- 2.5m
- Season of interest
- Spring, Winter
- Flowers in
- Spring
- Evergreen
- Deciduous
- Garden style
- Winter garden, Seaside garden
- Sun or shade
- Likes full sun
- Soil type
- Clay, Loam (normal)
- Soil pH
- All types
- Drainage
- Moisture retentive soil, Well drained soil
- Hardiness
- Very cold to -20C (RHS H6)
- Borders & containers
- Borders
- Use for
- Structural, Bee attraction
- Maintenance
- Easycare – low/no maintenance
- Hazards
- No
- Pet safe
- Yes – listed in our pet-safe plants
Spring
Spring - late · Outdoors
Feed young plants with slow release fertiliser
Spread a slow release fertiliser around the base of the plant to the edge of the foliage spread, so that it can feed the roots. It is helpful for this to be applied for several years.
This is a simple way to provide a nutrient boost until the plant becomes well established.
Spring-Autumn · Outdoors
Water frequently to keep the soil moist
The plant thrives in moist or boggy soil, doesn't tolerate dryness and should be watered frequently, not only after a period of drought, but if the soil begins to dry out spring to autumn. Check plants in pots more frequently, especially in hot weather.
Spring - early · Planting
Prune annually or for reducing size
The plant can either be generally pruned by removing dead or damaged growth and misplaced or crossing branches. When it becomes too large, or if a smaller plant is required, take the plant back to about 3 buds from its base.
Planting & general
Outdoor planting · Planting
Add root growth stimulant to the planting hole
Mycorrhizal fungi helps roots establish quickly, so they absorb water and nutrients more efficiently. It comes as a powder, granule or gel. Add to the planting hole or container, and to the plant's rootball before planting in the hole. For "bareroot" plants use a gel.
Planting
Protect & support young trees
Attach a newly planted tree or tall shrub over 1m to a tree stake to give support and prevent windrock. Use a tree guard to stop tree bark being eaten by animals, especially in areas with deer - removing bark injures a tree and in worst case can kill it.
Found in
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