TreeBay Bonsai Tools & Supplies has three types of cut paste
1) Callusmate is a wound dressing for general purpose use. _Comes in a large, toothpaste size tube for direct application
2) Masakuni tree sealant, which is more liquid in texture, comes with a small applicator tip and is designed for use on small wounds and thin barked trees, as well as broken branches
3) Shin-kiyonal, which is a paste that works well for grafting. _It remains more pliable than other sealants, but it is not designed for aesthetics! _Looks waxy in appearance.
The image above for the Cutto Pasuto product comes from one of many distributurs, Bonsai of Brooklyn,
www.bonsaiofbrooklyn.com, but there are other sources online. _ I have not ordered from B.o.B. before so I can't comment further on that, but the product works very well, especially on pines and juniper.
As far as making your own is concerned, you could use a latex based pruning sealant from your garden center or some folks even use white glue on small cracks. _It does run in the rain, though. _I prefer the bonsai products because I believe they work better and the color is aesthetically pleasing.
There used to be some latex stuff called "
oc Farwell's Tree Seal" that came in a nice big jar, but I guess the product was discontinued. _It was a nice color for bougainvillea and wisteria, but it was very difficult to remove. _Not a problem for those two trees because they are so slow healing anyway. _ _It was good on maples in the yard, too. _I haven't been able to find it. _Only dead links.
http://google.yahoo.com/bin/query?p...p;hc=0&hs=0
Regards,
Matt