This rose has no listed progeny, and indeed in only one reference is there any mention of hips at all - I have certainly never seen any hip set on my plant. However, as the flowers looked so inviting this year (2020), and as I was in a mad pollinating phase back in May and June, I decided to try different roses' pollen on Celestial to see what might happen.

Most of my few crosses failed fairly early on after pollination, but one (using pollen from R. Gallica Officinalis), much to my surprise, successfully set and ripened, and I took the hip from the plant in September (see pics in the photos of the hip just before I removed it) and extracted the seed. There were 5 seed in total, 3 of which were definitely fertile using the water test, whilst the other two were not definitely infertile, so as this was such an unusual cross I planted all the seed together in one pot.

We will have to wait and see what happens, but as this cross has worked and produced viable seed, I'm going to try many more crosses on it next year using pollen from various different types, to see whether there is any pattern as to what will and will not work with Celestial when using it as a seed parent.

Edit, update as of 25/8/21 - 3 of the seed from this cross germinated, and two have survived so far. They seem pretty healthy, if somewhat lacking in vigour. We will see what they can achieve.