Dogwood Chronicles #13
Recently, Michael Hagedorn posted on his blog about grafting JBP onto Ponderosa. While I enjoy nearly everything Michael produces, this one was particularly noteworthy. First, he's completely forthcoming about success rates, "To start with, the scions don’t take well. I rarely get better than 50% take, usually it’s closer to 30%. Whereas it is possible to get 100% take with JBP on JBP. Talking with others confirms that the meager take on this match is a common one." Pondos have only slightly better outcome rates than major league batting averages. Consistent above 40% and you're in the Hall of Fame. Yet, the weight of evidence for this to be a worthwhile endeavor is made immediately known in his photos. Ancient ponderosa bark, tiny tightly ramified emerald JBP shoots. Michael ends the blog by saying he wished he'd grafted all his ponderosas at the beginning of his 20 years. Not one to ignore my betters, I've started in my 3rd year.
Dogwood Studios exists at about 1000' altitude in Zone 8A. This is the foothills of Southern Appalachia. It gets very hot and very humid in the summer. Winters are increasingly mild. It is not weather where Ponderosa thrives. On its native foliage, you will watch them get weaker every year. When grafted though, they react just as the Black Pine react in Takamatsu, soaking up the Southern sun in stride. So, for us, not only is grafting an aesthetic choice, but its the clear choice for horticultural health of the material as well. Ultimately, wanting to graft native trunks with the best possible foliage for the best possible bonsai was one of the most significant factors in pursuing an apprenticeship with Tyler.
Unfortunately, pine grafting season was right when I first arrived at the garden. There were way higher priority benchmarks to go after, with Tyler on the road for most of January and February. Scion inventory was lacking as well, but I gave it my best shot., The results were far worse than Michael's 30% with a measly 1 out of 6 grafts taking. Something curious did happen with the one that did take, however. I had intentionally left a bifurcation-two candles on one scion. Now I have a grafted tight internode, cool! I'd love to test this further-Maybe do a few of our Pondos next year as 50% single candle and 50% double and see what the ratio of success may be. The real question is, do I still only get to count one successful graft?
As the glutton for punishment that I so clearly am, I additionally sought to graft JWP onto Ponderosa. This didn't strike me as any more radical than the widely held practice of JWP scions onto JBP stock, but I could find no evidence online of it ever successfully being applied. "Why not me," I thought. The poor Pondo I claimed as my victim went 0/11 on that attempt. I'm not ready to throw in the towel on the concept, but my technique surely needs to improve. I'm certainly curious to hear of anyone else whose had better than 50% & 0% success on these two styles of grafting. All it takes is one person to figure out the trick and the whole community grows.
"If I have seen further, it is by standing on the shoulders of giants." Issac Newton