ACACIA melanoxylon

Commonly known as Australian blackwood, Blackwood acacia

Similar to A. longifolia but with pinnate young foliage
Further Reading....
  • Evergreen
    Matt-green to greyish-green phyllodes (leaves) to 15cm (6in) long.
  • Cream
    To pale yellow.
  • Height
    5-25m (15-80ft)
  • Spread
    4-12m (13-40ft)
  • Tree
    Or shrub with an erect to spreading habit and freely-branching angular stems. Produces flower heads 1cm (½in) across
  • Half hardy - unheated greenhouse / mild winter
    Hardy in coastal and relatively mild parts of the UK except in severe winters and a risk from sudden (early) frosts. May be hardy elsewhere with wall shelter or good micro-climate. Likely to be damaged or killed in cold winters. Plant can withstand temperatures down to -5°C (23°F)
  • Full sun
    Sheltered site.

ACACIA melanoxylon

 
  • Additional Features
    Pests & Diseases
    Red spider mites under glass.
    Place of origin
    Australia (South Australia, Queensland to Tasmania).
  • Flower Shape
    Racemes
    Branches, axillary racemes 5-10cm (2-4in) long
  • Garden Location/Conditions
    Australian / New Zealand
  • Hardiness
    Frost hardy (down to -5)
  • Leaf margin
    Entire
    		(see photos above)
  • Leaf shape
    Lanceolate
    		(see photos above)
    Oblong
    		(see photos above)
  • Pruning group
    Pruning group 5
    Suitable for: Evergreen shrubs that require minimal pruning.
    Action: Trim or lightly cut back shoots that spoil symmetry. Deadhead regularly.
    When: Annually after flowering.
  • Seasonal Interest
    Spring
    Winter
  • Soil Conditions
    Fertile well drained soil
    Neutral to acid soil
  • Tree Shape
    Rounded to broadly spreading
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Acacia - Growing Guide
Shrubs - Care Guide
Trees - Care Guide
5-25m (15-80ft)
 tree - guide for size not form Average Person
  4-12m (13-40ft)
  

Useful extras...

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
Afterplant - Grow Your Own
AFTER PLANT GROW YOUR OWN seaweed is ready to use liquid concentrate that was specially formulated be used on all edible plants.
Only £8.00

Fertilisers & Feeds - Empathy
Afterplant - Tomatoes
AFTER PLANT TOMATO FEED Liquid Concentrate with Bio stimulant is a high potash liquid concentrate containing seaweed extract, plant derived amino acids and other nutrients specifically formulated to benefit tomatoes and greenhouse plants.
Only £8.00

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)
3 options from £3.00

Fertilisers & Feeds - Empathy
Rootgrow Ericoid mycorrhizal fungi
This specially adapted Rootgrow™ mycorrhizal fungi will boost the growth of acid-loving plants like rhododendrons, azaleas, heathers and blueberries. It contains ericoid and arbuscular mycorrhizal fungi, which are found in poor acidic soils where ericaceous plants naturally grow.
Only £7.50

Fertilisers & Feeds - Empathy
All-purpose Seaweed Stimulant
All-purpose organic concentrated seaweed feed that is a ready to use, derived from sustainable harvested kelp, that can be used on all outdoor and indoor plants, except acid loving plants. Perfect used in conjunction with Rootgrow™.
Only £7.50

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