Archive for dawn redwood

Dawn Redwood update

Posted in Fusion Bonsai with tags , , on March 7, 2013 by Greg Wentzel

dr10 Last year I was having trouble getting the larger trees to fuse. Several twist ties had snapped and were no longer holding the trees together. A few trees were now approaching an inch in diameter and twist ties were just not strong enough to hold them together. So I tried short brass screws and they worked great.  In the pic above you can see that the large tree (right center) fused nicely to the one on it’s left after being screwed together. The only problem now is that because I counter sank the screw and the tree healed over the wound I can not find the screw. I am afraid that when I remove the excess whip down to the trunk I will find the screw and damage my pruners.

dr11 So this time I used 3 inch long deck screws. This is the apex. The plan is to carefully remove the screws after fusion is complete and I don’t have to worry about cutting into one of the screws.

dr12 Farther down the tree you can see I used several screws, 8 deck screws plus 4 more brass screws from last year. There were several areas that needed to be locked down with pressure to force them to fuse. No pressure, no fusion. Note that the bottom screw actually goes through 4 trees.

My friend Shane  Martin ( http://shanemartinbonsai.wordpress.com/2013/01/) used a brad gun to shoot nails into half inch diameter seedlings to attach them to a wooden frame. He said it works great. I will follow that project closely.

There are many ways to attach seedlings together. The important thing is to apply constant pressure. Thin seedlings are easily held together with wire, but as the seedlings get larger they often snap the wire releasing the pressure. If that happens you need to get creative.

Have fun!

Greg Logo

Dawn Redwood fusion update

Posted in Fusion Bonsai with tags , , , on December 30, 2012 by Greg Wentzel

dr5 The Dawn Redwood project is now over 6 feet tall. There is good fusion at the base but the apex has very little fusion because many of the twist ties have snapped and released the seedlings from their bonds.

dr4 Here you can see the fusion beginning to take hold near the base of the tree.

dr1 Here is a closeup on the other side of the tree. This is where I used a screw to attach the seedlings and it has held them together with pressure that can not be achieved with twist ties. The seedlings have completely healed over the screw and it is not visible. It should not be a problem to have screws completely embedded in the trunk because they are brass and will not rust. Even if they do eventually corrode the trunk will be completely fused by then. A problem might occur when I remove the excess whip of the seedling because I can’t see the screw and I could damage tools in the process.

Next spring I will insert many more screws to tighten up the trunk and apply the needed pressure for fusion.

Have Fun!

Greg Logo

A Tale of Two Fusions

Posted in Acer Buergerianum, Dawn Redwood, Fusion Bonsai, Metasequoia Glyptostroboides, Trident Maple with tags , , , , , , , , , , , , on September 10, 2011 by Greg Wentzel

I originally began this blog as a real time document of my attempts to fuse seedlings into large tapered trunk bonsai. This quickly morphed into a broader based tree blog and will probably continue to morph into what I don’t yet know. I would spend much more time studying and writing about trees, however I have to work to support my other hobbies, namely food and shelter.

In this post I will introduce two readers who have also experimented with trunk fusions (we are not alone). This is not meant to be a competition, but to highlight the similarities despite radical differences in construction.

Shane is from down under in Australia. 23 years ago Shane, without using a frame, tied Trident maple seedlings together around a rock using raffia (a biodegradable string). He had several seedlings die and having no replacement seedlings to fill the gaps just let the tree grow. It took quite a long time to close the gaps naturally but he now has a great tapered trunk to begin developing branches. The nebari (exposed roots) have a good start and can be further improved with root grafting. The scars on the trunk should heal by the time the branches are completed. This tree is 15 inches tall to the base of the leader, which should now be removed, and has a whopping 12-inch diameter at the base of the trunk.

Will is from Maryland, USA. He used Doug Phillips approach of attaching Trident maple seedlings to a heavy gauge copper wire frame using paper coated twist ties. Will also had several seedlings die off and also chose to let the gaps fill in naturally. In the first photo we can see how Will used Styrofoam peanuts to push the excess seedlings away from the trunk allowing them to grow and fuse with adjacent seedlings before their removal. In the second photo we can see the tree is beginning to loose it’s taper because the sacrifice branches have been allowed to grow too large, but look at that incredible nebari. Will’s tree is 4 years old.

Both Shane and Will have encountered the major flaw of the trunk fusion technique, seedling die off (I have also run into this problem with my Trident maple, although I have not had a die off problem with my Dawn redwood, more on my trees in a future blog). Both men purchased their seedlings and that could be part of the die off problem. I have found that growing your own seedlings greatly improves their survival rate. It also adds one year to the growth process.

Doug Phillips, Shane, Will and myself are a small but growing subset within the bonsai community. We are eager to experiment and try new techniques. I hope others will join us and some day in the near future we will be considered mainstream bonsai enthusiasts.

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