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Commonly known as European alder, Grey alder
A very hardy plant which will prosper in the coldest, wettest position
Deciduous - dark-green leaves to 10cm (4in) long, grey-white and hairy beneath.
Height - 20m (70ft)
Spread - 10m (30ft)
Tree - yellow-brown male catkins 10cm (4in) long in groups of 3 or 4 are produced in winter and early spring before the leaves followed, in summer, by fruit 1.5cm (½in) long.
Hardy - very cold winter - Hardy in all of UK and northern Europe. Plant can possibly withstand temperatures down to -20°C (-4°F)
Additional Features - Good to know - useful as a windbreak
Pests & Diseases - Phytophthora root rot.
Place of origin - Europe, Caucasus.
Hardiness - Fully hardy
Soil Conditions - Fertile well drained soil
Tree Shape - Broadly conical
Trees - Care Guide
- How to plant a tree - Video Tip ondemand_video
- How to plant a tree
- Checking ties - Video Tip ondemand_video
- Restaking fallen young tree - Video Tip ondemand_video
- Fallen old tree - Video Tip ondemand_video
- Spring pruning - Video Tip ondemand_video
- Removing side shoots - Video Tip ondemand_video
- Deer protection - Video Tip ondemand_video
- Weed Spraying - Video Tip ondemand_video
- Tree Survey - Video Tip ondemand_video
Buy Varieties of ALNUS incana
Fertilisers & Feeds - Vitax
Q4 Pelleted Fertiliser
A useful fertiliser suitable for use on a wide variety of plants. Q4 provides all the nutrients and trace elements essential for vigorous growth, abundant flowering and ripening of fruit.
3 options from £6.00
Fertilisers & Feeds - Empathy
Rootgrow mycorrhizal fungi
Recommended by the RHS. Contains Rootgrow™ mycorrhizal fungi. Suitable for all trees and shrubs (except rhododendrons, azaleas, heathers, cranberries and blueberries)
2 options from £6.00
Vermin & Pest Control
Essential small tree protection from vermin and strimming. This pack includes 5 x 90cm canes and 5 x 90cm spiral guards. Includes instructions.