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I do not know of any rosebushes that have the name of just Ocean. You can go to the link I am providing here to look at roses that have Ocean in their names, hopefully this will help you: http://www.helpmefind.com/rose/plants.php?searchNmTyp=5&searchNm=Ocean&rid=4231&sbSearch=SEARCH&tab=1

There are different reasons why the leaves may be yellowing on your rosebush, many times it is either due to over watering or can be a very natural thing as the rosebush grows new foliage that shadows some old foliage that then is allowed to die back and fall off. Check out this article link on this subject as well: https://www.gardeningknowhow.com/ornamental/flowers/roses/yellowing-rose-leaves.htm

Hi Lesley, so sorry to hear this is happening to your rosebushes blooms.... If you had not mentioned that you get plenty of rain, I would have thought you might have a thrips problem. However, instead I do believe you are seeing a classic case of Rose Balling. Please check out this article on this subject: https://www.gardeningknowhow.com/ornamental/flowers/roses/what-is-rose-balling.htm

Stan The Rose Man
Consulting Rosarian
Gardening Know How

It could be a genetics thing with those particular canes. If you prune them off and those same canes produce the same type of blooms, I would prune the problem canes completely out and other new canes should emerge that will hopefully produce the better buds and blooms. It can also be a insect problem, such as thrips. They make small holes into the buds and mess up the bloom inside before it has a chance to bloom nicely. A systemic insecticide will get after the thrips.

The hotter it gets the more quickly the rose blooms will open. Some will actually be buds during the day and open up over night on hot nights and be pretty much done by mid morning.It sounds like you are feeding them just fine. Keep them watered and when the temperature cools the blooms should begin lasting longer again.

This can be a sign that the rosebush is under heat stress and pruning them real hard is not the thing to do. Pruning them back hard while already stressed out just doubles the stress. It is okay to prune back the dead or done blooms and growth. Water all of them with some water that has both a root stimulator and a product called Super Thrive mixed into the same water. Water them with this mix the next 4 to 5 times they need watering. Once the temperatures outside cool down a bit, the foliage should return just fine.