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History: Home >
Commonly known as Black alder, Common alder
Yellow catkins in March, suitable as a windbreak especially in waterlogged areas
Good to know - the native alder. Wildlife plant - birds. Lasts indefinitely underwater. Makes good charcoal. Produced superior gunpowder. Was coppiced widely in north-east UK for clogs.
Pests & Diseases - Phytophthora root rot.
Place of Origin - Europe, northern Africa, western Asia.
Hardy - very cold winter - Hardy in all of UK and northern Europe. Plant can possibly withstand temperatures down to -20°C (-4°F)
Height - 25m (80ft)
Spread - 10m (30ft)
Deciduous - dark-green leaves to 10cm (4in) long, sticky when young.
Tree - yellow-brown male catkins 10cm (4in) long in groups of 3-5. Fruit, 2.5cm (1in) long in summer.
fertile well drained soil
Trees - Care Guide
- How to plant a tree
- How to plant a tree - Video Tip ondemand_video
- Checking ties - Video Tip ondemand_video
- Restaking fallen young tree - Video Clip 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
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.