Are Azaleas Good Trees For Bonsai?

Azaleas are an evergreen small flowering shrub and they are one of the favourite trees to be used for bonsais around the world. 

Some bonsai growers only deal with them specifically as they see them as truly the best tree for bonsai. There are a number of varieties and you can get different coloured flowers so there is plenty of variation if you only wanted to just grow these.

I own two azaleas, You can see how one of my tree is developing in my Azalea Bonsai Progression.

Is An Azalea A Good Species for Bonsai?

Azaleas are a great species for bonsai. They are mainly grown for their flowers, however, even without these they are still a great tree.

They are easy to care for, easy to develop and they work in a number of different of styles and sizes. The flowers are just the cherry on top that make them amazing for bonsai.

Are Azaleas Foliage Good For Bonsai?

Azalea leaves are pretty good for bonsai. They are a decent size and are naturally small, but they can reduce further with pruning. A lot of azalea bonsai are quite large, so the leaves look really proportionate and in scale.

The flowers can be quite large and they work really well with larger size trees. However, even on smaller trees they are just so beautiful that it doesn’t matter that they are a little too large looking.

Internode Length

If left unchecked an azalea can have pretty long straight growth and you can find huge internodes which is really not idea. You will also find that the leaves will naturally clump together quite nicely. You often get a long straight bare branch, and then all the leaves nicely packed together at the end with really short internodes.

Luckily you can reduce these long branches if you are pruning the tree a lot and managing the growth properly.

Are Azaleas Growth Rate Good For Bonsai?

Azaleas grow pretty quickly, but they are a bit different to most trees. They grow from the base, rather than the apex. This means you will find a lot of new growth down low on the tree and it can take a while to build a strong apex. It doesn’t really affect things too much but it is something to be aware of and take notice of when you are pruning and trying to develop a tree.

The other issue is that they can take a while to thicken up. If you want a good trunk you should try and buy an already established tree, or you will have to spend many years waiting for it to thicken.

Response To Pruning

Azaleas will respond really well to pruning. The first thing to be aware of is that when you prune can affect if it flowers. If you come in and trim the tips you may well be removing all the future flower buds. So if you want to have flowers during a season, it is best to wait until after they have opened before pruning back.

You can also prune azaleas very hard and they will respond very well to this. In fact this is often the best thing to do. Pruning regularly keeps the tree growing and healthy. If you just leave it alone for a number of years it can start to lose vigour as it becomes over stretched.  

They will also send out multiple shoots where you have pruned, so you will need to be aware of knuckles forming from too much growth in one area.

Back Budding

You can get a lot of back budding on azaleas. I’ve found that every time I prune them hard I will get a huge flush of back buds.

Some of these can be in annoying places such as the crotches of branches or on the trunk, but a lot of the time they will appear along the branches you are growing, which is perfect. Once these shoots have developed a bit you can cut back the growth to these and then reduce the size of the tree, making it more compact. 

Ramification

Due to the great response to pruning and ability to back bud it is very easy to build ramification on an azalea. You can build some really dense foliage pads that look great but when the tree flowers they looks amazing. It is like the whole tree is made out of flowers and you cannot see any green. It can be really impressive. 

Are Azaleas Styling Ability Good For Bonsai?

Most of the styling choices with azalea are made with the flowers in mind. While the tree can look great all year long, the couple of weeks where it is in flower are really why they are grown.

Wiring

You can build a lot of the structure of azaleas through pruning, but you will find that some branches need wired and if you tree is young you may need to wire the main structure into place.

Are Azaleas Fall Colours Good For Bonsai?

Being an evergreen you will not get any change in autumn. This also means you will never get to see the structure of the tree without the leaves, so there is no winter silhouette to enjoy.

The only real change throughout the year is at the end of spring when the flowers open. These totally make up for the lack of change at other times of the year.

Are Azaleas Bark Good For Bonsai?

The bark on azaleas is quite thin and is easily damaged. It can almost peel off so you need to be careful with it. You also need to be careful with wire as it will very easily bite into the bark and cause damage.

Thin bark means that wounds can be hard to heal over and will potentially scar the tree forever.

You should also not have any kind of deadwood or carved areas on an azalea. This is going to look very out of place when the tree flowers. These rugged features do not balance well with the elegant beauty of the flowers. 

Are Azaleas Roots Good For Bonsai?

The roots of azaleas are great for bonsai. They are naturally quite fine and they can take some serious work. This means you can really build up some nice roots and a great root flare from the trunk.

The only issue to be aware of is that they prefer to grow in slightly different conditions than most trees. They prefer acidic soils, so you will need to cater for this if you are growing them. However, this is not a very complicated thing to do; you just need to buy certain components for you soil mix. It will not affect your ability to keep them as bonsai.   

Are Azaleas Easy To Care For As Bonsai?

Apart from having to use a different soil, azaleas are pretty easy to care for. You can read more in my Azalea Care Guide.

Conclusion

Azaleas are great for bonsai. They are easy to care for and respond very well to bonsai techniques. They look great and if you allow them to flower they can look amazing. Even if you are not really into flowers you can’t help but be impressed by an azalea when it is covered in flowers.

If you want something different in your collection they are a great option with a proven track record of being very enjoyable and reliable bonsais.