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A to Z of Bonsai
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A to Z of Bonsai Terms

Welcome to the A to Z of Bonsai.

We are compiling a worldwide A to Z of Bonsai database. The A to Z is written collaboratively by the people who use it and we would like to encourage anyone reading this page to contribute to what has become the worlds greatest encyclopedia of bonsai terms. Entries when they are made will be added to an editable list which will be checked prior to publication. Photos and images of the bonsai term can be added and links made to relevant web pages. So if you would like to help then just click the "Add Your Own Term" button.



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Letter - 34 entries

Raceme

 - (Tree Parts)  
Entry for Bonsai Raceme Tree Parts  Update this bonsai term Raceme Tree Parts
Chinese_Wisteria.jpg image RACEME - A type of ELONGATED flower with individual stalks growing from a single stem e.g wisteria


Bonsai Videos
Thanks to - Wikipedia for use of the image

Raffia

 - (Tool)  
Entry for Bonsai Raffia Tool   WWW Link  Update this bonsai term Raffia Tool
bonsai_raffia_01.jpg image RAFFIA - Made of strips of BARK from the raphia palm, this is soaked and wrapped arround a section of tree which requires significant bending, to protect it from splitting and from damage by the wire
Thanks to - Kaizen Bonsai for use of the image

Rake

 - (Tool)  
Entry for Bonsai Rake Tool  Update this bonsai term Rake Tool
bonsai_rake_02.jpg image RAKE - Small rake used in BONSAI>BONSAI for clearing soilaround nebari or tree ROOTS (during REPOTTING). Usually combined with either TWEEZERS or a SPATULA at the other end of the tool.



Ramification

 - (Tree Parts)  
Entry for Bonsai Ramification Tree Parts   WWW Link  Update this bonsai term Ramification Tree Parts
bonsai_ramification_01.jpg image RAMIFICATION - Ramification means branching or branch development that displays TAPER, resulting in a tracery of fine branches at the extremities of the branches. It is encouraged by PRUNING and may be integrated with practices that promote leaf reduction  


Thanks to - bonsai4me.com for use of the image

Red spider mite

 - (Pests and Diseases)  
Entry for Bonsai Red spider mite Pests and Diseases  Update this bonsai term Red spider mite Pests and Diseases

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bonsai dictionary
Red SPIDER MITE - There are two types : the FRUIT tree RED SPIDER MITE on broad-leaved trees and the conifer spinning mite on conifers. Indications of infection are an unhealthy browning of the foliage accompanied by a silky webbing. Tiny spider-like mites may also be seen on leaf undersides. These can cause serious damage and should be sprayed with insecticide - ideally MALATHION or DERRIS.  Alternative type is the Glasshouse Red Spider Mite or  "Web-forming Tetranychus".



Red Spot Disease

 - (Pests and Diseases)  
Entry for Bonsai Red Spot Disease Pests and Diseases  Update this bonsai term Red Spot Disease Pests and Diseases

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bonsai dictionary
RED SPOT DISEASE - This is a disease of maples which is triggered by a fungal attack causing brilliant red "pimples" to appear on the BARK. Initially the bark, and then the whole branch dies back. The only known treatment is to prune back to healthy wood.

Reduction building

 - (Procedure)  
Entry for Bonsai Reduction building Procedure  Update this bonsai term Reduction building Procedure

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bonsai dictionary
REDUCTION BUILDING - This process uses accelerated growth techniques and massive foliage and branch reduction, followed by strong re-growth, more moderate reduction and training (primarily by training).  It is used to produce larger trunks with character and TAPER, particularly in TROPICAL regions but may be applied in temperate regions to SPECIES like aZAleas.



Redwood - California (Sequoia sempervirens)

 - (Tree Type (Outdoors))  
Entry for Bonsai Redwood - California (Sequoia sempervirens) Tree Type (Outdoors)   WWW Link  Update this bonsai term Redwood - California (Sequoia sempervirens) Tree Type (Outdoors)
bonsai_californian_redwood_01.JPG image REDWOOD - CALIFORNIA (SEQUOIA SEMPERVIRENS) - Very tall EVERGREEN conifer with a columnar outline and drooping lower branches. It has attractive, red/brown fibrous BARK and flattened, NEEDLE-like LEAVES which are mid-green and curved on main SHOOTS and dark green, flat and narrow on lateral ones.

STYLE : Ideal for formal and informal upright, slanting and group styles.

WARNING : Branches tend to resume upward growth after freeing from any WIRING.


 Bonsai_Redwood - California (Sequoia sempervirens) Tree Type (Outdoors) Bonsai More
Thanks to - Wikipedia for use of the image

Reniform (leaf)

 - (Tree Parts)  
Entry for Bonsai Reniform (leaf) Tree Parts   WWW Link  Update this bonsai term Reniform (leaf) Tree Parts
Bonsai-Leaf-Shape.gif image RENIFORM (LEAF) - Kidney SHAPEd with stem attached at concave edge.


Thanks to - Wikipedia for use of the image

Repotting

 - (Procedure)  
Entry for Bonsai Repotting Procedure   WWW Link  Update this bonsai term Repotting Procedure
Repotting-Bonsai.jpg image REPOTTING - The ROOTS of potted trees are limited by the size of their container as to how far they can spread. After a period of time which varies dependant on the SPECIES of tree, the root systems of all pot-grown trees fill their containers, eventually becoming 'POT BOUND' and in some cases they begin to push the tree out of the pot.

When this happens the fine FEEDER ROOTS that are essential to the uptake of water and nutrients have little room to grow, are far away from the main TRUNK OF THE TREE, the soil structure deteriorates and the plant starts to suffer. At this point repotting is required to allow fresh COMPOST/potting medium/substrate to be inserted in and around the root system and the root sytem itself may require CUTTING back so that it can continue to form fine feeder roots closer to the trunk.


 Bonsai_Repotting Procedure Bonsai More
Thanks to - Kenny Middleton for use of the image

Reticulate leaf

 - (Tree Parts)  
Entry for Bonsai Reticulate leaf Tree Parts   WWW Link  Update this bonsai term Reticulate leaf Tree Parts
bonsai_reticulate_leaf_01.jpg image RETICULATE LEAF - Leaf with a complex surface pattern, usually created by a network of veins.
Thanks to - Wikipedia for use of the image

Reverse osmosis

 - (Pests and Diseases)  
Entry for Bonsai Reverse osmosis Pests and Diseases  Update this bonsai term Reverse osmosis Pests and Diseases

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bonsai dictionary
OSMOSIS>REVERSE OSMOSIS - The passage of water from the ROOTS into the soil. This is often caused by an excessive concentration of fertilizer in the soil and can result in browning of foliage and , in extreme, untreated cases, the death of the tree.

Rhizome

 - (Tree Parts)  
Entry for Bonsai Rhizome Tree Parts   WWW Link  Update this bonsai term Rhizome Tree Parts
bonsai_rhizome_01.jpg image RHIZOME - This is a  continuously growing horizontal underground stem which puts out lateral SHOOTS and adventitious ROOTS at intervals.

Well known plants with an underground rhizome system include ginger and bamboo.


Thanks to - Wikipedia for use of the image

Rhododendron (Azalea)

 - (Tree Type (Outdoors))  
Entry for Bonsai Rhododendron (Azalea) Tree Type (Outdoors)   WWW Link  Update this bonsai term Rhododendron (Azalea) Tree Type (Outdoors)
bonsai_azalea_03.jpg image Rhododendron (AZAlea) - See AZALEA (RHODODENDRON) .
Thanks to - SBA Gallery for use of the image

Rhomboid (leaf)

 - (Tree Parts)  
Entry for Bonsai Rhomboid (leaf) Tree Parts   WWW Link  Update this bonsai term Rhomboid (leaf) Tree Parts
Bonsai-Leaf-Shape.gif image RHOMBOID (LEAF) - Diamond SHAPEd.


Thanks to - Wikipedia for use of the image

Ring barking

 - (Procedure)  
Entry for Bonsai Ring barking Procedure   WWW Link  Update this bonsai term Ring barking Procedure
bonsai_ring_barking_01.jpg image