Yes, like most rugosas, it has the ability to flower on new wood. We used to grow it, and it repeated rather well even in our hot weather. In zone 9/10, unless you're wanting to build plant size as quickly as possible, I don't think pinching off the flowers is necessary. I seldom do it.

Malcolm thanks for the info. I have no experience with rugosas and due to my alkaline soil I suppose they are a virtual no-no for me. Hence the pot for PG.
Nik

Actually, the Grootendorsts grow well in my alkaline prairie soil, which averages around 8.0 pH. I'd give it a try. And yes, it flowers on both new and old wood and it doesn't need to be pinched. It won't form hips and doesn't have scent to speak of, but the petals will fall without being ugly first. Nobody's perfect. See the link below for more info.

Here is a link that might be useful: Garden Musings blog on Pink Grootendorst

Prof thanks for the info! Maybe I'll give it a try come fall, depending on how it does in my summer. I actually always amend the soil with blonde peat before I plant roses to try to make it somewhat less alkaline and fertlilize with ammonium sulfate so what you're saying gives me hope. I wouldn't have bought this rose just because it was of the notoriously acidophile rugosa line were it not for my partner in life who saw a pic of it and had me get it for her. I don't usually go for scentless roses but I must admit the pics of it show it can be quite attractive. Would you happen to know if it's at all shade tolerant?
I love your blog btw, not to mention your gardens. I've just come home from work and you've given me a nice way to spend my evening reading your blog. Thanks.
Nik

This post was edited by nikthegreek on Tue, Feb 25, 14 at 13:00

It probably wouldn't recommend Pink Grootendorst for the shade; it might grow a bit, but probably wouldn't bloom much and you really don't want this rose unless it blooms...otherwise it's a big thorny bush with not much foliage around its feet.

Thanks for the kind words about the blog. You can see from there that there are a number of rugosas to choose from for alkaline soil.