Choose OHF97 vs. P. betulaefolia?
From what understand some are having problems in the NE with lack of vigor when using Pbet. I want to avoid this. I've read that they requiring higher pH.
I'm in sandy loam and have been fall dressing them with Gypsum and kelp. I have them on Drip emmiters in the summer and while they put on minimum growth during establishment, I expect them to show some vigor soon. I have yoinashi/Oly/ and hosui. I also hit them this fall with a little urea 18" from trunk and mulched. I plan on a light urea one more time at bud break. They are in full sun.
Am I on the right track?