California zone 10. I have grown, moved, started from cuttings, this rose in its general area in my garden for 10 years. In early spring it goes through a rust phase that makes it shed leaves. Once the weather warms, it stops that nonsense and grows vigorous laterals from the 2-3 leaflet nodes I've cut it back to with some mildew present. It out grows pesky diseases. Blackspot is not a problem. I've grown it horizontally 20 ft. Vertically 10 ft. It wears like iron. The floral display is like few other LCL's. It makes up for being an once bloomer. Great fragrance. Any serious garden with space has no excuse not to grow this rose.
My Paul's lemon pillar is a beautifull white ivory centred blooms which averages around ten medium sized 3" blooms in thousands of clusters.After 20 yrs with out prunning it would cover an area of ten square metres and is some 6-8' tall.As it gets older, its repeats get better.Last yr for the first time it didn't flower. This was due to late frosts claiming all the young shoots and buds in late October. I never water it as it is near a septic overflow and it has rooted down in numerous places.
This rose is borderline hardy in Z5. If stems don't die to the ground, old wood will produce large clusters or single stem large white blooms with the lemony scent. Slight susceptibility to mildew but that's it. This has been one of my favourite white roses of all time. The size, profusion and quality of flower is astounding and only experiencing them for a month a year makes them even more special.