It is wholly spring blooming, so I suspect you need to be shy of pruning a very young plant.
The Sacramento City Cemtetery folks could be helpful to you with this, but I'm not sure any of them are around just now. If you don't get info you need, try contacting them through the website (see below).

Jeri

Here is a link that might be useful: Contacting the SCC Historic Rose Garden

The wood which grows this year will flower next year. Cutting it now will reduce next years flowers, but not eliminate them unless you whack the dickens out of the plant. The larger you allow it to grow, the more flowers you'll have. You can literally shear it like a shrub and it will flower on the wood of the right age remaining. As with any once flowering rose, it should be pruned right after flowering so all the new wood produced after being cut will mature and be ready to flower next year. Does that help?

I have grown it in a pot where it attained about six feet with half the spread and in the open ground where it wanted to just keep growing. I didn't require anything other than soil, sun and water. I did learn it resents being sprayed with any chemicals, so if you must spray due to your climate, try to plant this where if it gets black spot, you can ignore it and it won't catch the over spray from the rest of the garden. In my climate, it dropped all the foliage when sprayed with anything other than water. Kim

Thank you

You're welcome! I think you'll really enjoy this rose. Even without the deliciously scented sepals and new growth tips, it is just PRETTY! The pink, single flowers are lighter in their centers so they almost appear to glow. They do have some scent, but it's that marvelous green apple scent of the plant parts that make this rose famous and valuable in the perfume industry. If you can, put it somewhere breezes can blow through it to carry that apple scent to you. I had it potted outside my front door in a townhouse for a few years so when the evening breezes came up, I could often smell it inside. No matter where you can grow it, be sure to carefully brush the buds and new growth tips and smell the plant. Delicious! Kim

It does spread, so take that into account. Aside from hacking it to keep it out of the way, about the only pruning we do is to remove old wood.

R eglantaria behind the 1847 wine barn, Rancho Camulos, Piru, CA.
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On a historic ranch in the Sierra Foothills:
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Jeri