The genus Cotoneaster contains many common garden shrubs and that in itself should indicate that it is a plant that is very comfortable in UK conditions making it very easy to keep, grow and develop as a bonsai subject.
The Cotoneaster species range from prostrate, creeping shrubs, often these will have very small leaves making them great for particularly the smaller size classes of bonsai, to small trees with perhaps larger leaves. It also includes deciduous and evergreen species. A particular attraction of all the Cotoneasters is that they have very small white or pink tinged flowers followed by mainly red berries. Good autumn colour is also an attractive feature. All in all good bonsai subjects.
We have recently purchased part of a collection from a long time and experienced member of the Willowbog community who is having to seriously reduce his collection. Amongst the trees are a number of beautifully created Cotoneaster bonsai, several are either root over or root on rock styles, all are well done, are healthy and can only improve in the right hands. Mostly they are in the small or shohin size category.
I really like this little example, it looks to have been on or in that rock for a long time. I am not sure how that I would suggest improvements, maybe grow a little more branch structure as the rock is fairly dominant in the overall image, but I am being picky ! The tree is 28cm. across and about 12 cm. high. At the base the rock is 12cm. across and the trunk diam. 2cm. The pot looks Japanese but I am not familiar with that unusual hexagonal shape but it looks good quality and is unglazed and ceramic with the measurement of 21x6cm. There will not be many bonsai like this available as it is not grown commercially anywhere and will only come from an enthusiasts garden. A really interesting addition to a shohin collection. I would hate to try to guess the price of something like this if it was a Japanese import these days.