Rose is also needed to use fertilizer , if you think of it as ornamental flowers, you can use the vegetable fertilizer.I know there is a fertilizer used in the rose and vegetables effect is good.It is cocoly granular water soluble fertilizer .If you want to learn this fertilizer ,Pls contact me

in my experience generally, vegetables prefer a balanced fertilizer. Unless you are growing something specific like tomato plants.

Something like 14-14-14 for Vegetables

Whereas roses like a feed with higher nitrogen fertilizer early in the season and then a high phosphorus

Again somewhere in the region of 9-18-9 for Roses pre-bloom

This article on rose fertilizers https://theyardandgarden.com/best-rose-fertilizer/ covers it and when best to feed your roses

As long as they get something when they start to bud up, that's the main thing