When my husband died I paid the cemetery £150 for a tiny rose bush and metal tag with his name on. I had a major argument with them because I wanted the name "Rocky" put on it. He was never called anything else.
I went to the cemetery expecting to scatter his ashes around the rose bush only to be told by a thoroughly obnoxious man that I couldn't "chuck 14 lbs of ashes around a rose" and had to take them to an agreed area. They knew when I paid for the rose that that was the plan!
I gave up that day and later took them to his favourite part of the coast and put them in the sea. However I kept a small amount back. My friend and I went back to the cemetery, she kept watch (in a sort of pantomine fashion) while I dug a small hole under the rose and buried the ashes.
Rocky would have loved it, he had a wicked sense of humour!
You go for it Caz, put them wherever you want to.
You need to feel content that you have done everything you can for somebody that you have lost.
All the best, Elin