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KALOPANAX septemlobus

Commonly known as Castor aralia, Prickly castor oil tree

(Pictus) - immature growth has stout prickles. Large 5-7 lobed leaves and clusters of white flowers are followed by clusters of black berries. Outstanding yellow autumn colour
Further Reading....
  • Deciduous
    Dark-green leaves to 35cm (14in) across from swollen, late-winter buds.
  • White
  • Height
    10m (33ft)
  • Spread
    10m (33ft)
  • Tree
    Spreading tree. Produces 4- or 5-petalled very small flowers followed by spherical, blue-black fruits.
  • Hardy - very cold winter
    Hardy in all of UK and northern Europe. Plant can possibly withstand temperatures down to -20°C (-4°F)
  • Full sun
    Best sheltered by other trees and shrubs

KALOPANAX septemlobus

 

 

  • Additional Features
    Architectural interest
    Good to know
    Syn. K. pictus. A fine, unusual specimen tree. Flowers attract insects.
    Pests & Diseases
    None
    Place of origin
    China, Korea, Russia(S. Kurile Islands, Sakhalin), Japan(Ryukyu Islands)
  • Flower Shape
    Panicles
    Large panicles 20-30cm (8-12in) long
  • Hardiness
    Fully hardy
  • Leaf margin
    Lobed
    		(see photos above)
  • Pruning group
    Pruning group 1
    Suitable for: Deciduous and evergreen trees, and some deciduous shrubs.
    Pruning: Minimal pruning required. Prune wayward or crossing branches to maintain a healthy framework.
    When: When dormant in the late winter/early spring. Some in the summer/autumn to prevent bleeding of sap.
  • Seasonal Interest
    Summer
  • Soil Conditions
    Fertile moist well-drained soil
  • Tree Shape
    Rounded to broadly spreading
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Kalopanax - Growing Guide
Trees - Care Guide
10m (33ft)
 tree - guide for size not form Average Person
  10m (33ft)
  

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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