Татьяна, розы из этого питомника кардинально отличаются от привитых роз вообще? Если подвой плохо развивается на тяжелых глинистых почвах, то название питомника не имеет значения, важно то, что подвой не универсален, к сожалению.
P.S. Оценка моего опыта и моего личного мнения не входит в Ваши полномочия , прошу об этом помнить и вести себя корректно.
Я очень рада, что на вашем участке этот подвой развивается успешно :)
Dear Tatiana, are the roses of Lens Roses radically different of all other grafted roses at all? If the rootstock is developing poorly on heavy clay soils, so the name of the nursery doesn't matter. What matters is, that the rootstock is unfortunately not universal
P.S. Appraisal of my experiences and my personal opinion is not in your authority. Please remember this and behave properly.
By the way I am very glad that in your garden this rootstock is developing successfully :)))

Dear Tatiana, I personnaly don't blame all Lens understocks. I only meant my plant I had. And its understock was really dead after the winter but the grafted part was still alive till june than died too. For justice' sake I planted my 3 first Lens roses in spring 2009 but they are still growing weaker as compared with plants of other nurseries. I would say they grow like the own-root ones.
And well, here are so many members with very different opinions and experiences and they may certainly differ from yours but they have the right to exist even if you personnaly don't agree it.

Tatiana Roses,

You make a potentially valid point (one must exercise caution stating broad generalizations from limited personal experience) but please refrain from posts of a personal nature deriding other members. Thank you.