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KALOPANAX septemlobus
Commonly known as Castor aralia, Prickly castor oil tree
(Pictus) - an architechural tree with broad sycamore-like leaves but with stout prickles all over the stem. Clusters of white flowers in autumn
Further Reading....
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Deciduous - dark-green leaves to 35cm (14in) across from swollen, late-winter buds.
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White
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Height - 10m (33ft)
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Spread - 10m (33ft)
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Tree - spreading tree. Large panicles 20-30cm (8-12in) long of 4- or 5-petalled very small flowers followed by spherical, blue-black fruits.
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Hardy - very cold winter - Hardy in all of UK and northern Europe. Plant can possibly withstand temperatures down to -20°C (-4°F)
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Full sun - likes to be sheltered by other trees and shrubs
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Additional Features - Architectural interest
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Good to know - syn. K. pictus. A fine, unusual specimen tree. Flowers attract insects.
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Pests & Diseases - none
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Place of origin - China, Korea, Russia(S. Kurile Islands, Sakhalin), Japan(Ryukyu Islands)
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Hardiness - Fully hardy
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Soil Conditions - Fertile moist well-drained soil
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Tree Shape - Rounded to broadly spreading
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Kalopanax - Growing Guide
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
10m (33ft)
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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
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

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

Garden Goodies
Slate Plant Labels
These wonderfully tactile natural slate plant labels are hand made in Cornwall and come with a chalk pen.
Just stick them in your pot or border. Pack of 6.
Only £10.20

Garden Goodies
Slate Tie-on Plant Labels
Hand made in Cornwall, these delightful natural slate labels are perfect for pots.
Comes with chalk pen. Pack of 5
Only £10.20