What kinds of plants/flowers can I put in my dog's memorail graves that will come back year after year?

I live in southern Idaho .I already planted some bulbs in one dog's grave ,/ They have not or did not come up so I'm a little worried about them. They are in Scruffy's grave for those of you from Pets-Dogs) and now I'm looking for plants/flowers that will come back year after year. They will be both Scruffy'ss and Liberty's memorials. It's get below freezing in the winter here so we have to fact that in this.





Does anyone have any great ideas of what I can plant in their memorials that will come back year after year and get bigger too? One idea I'm playing is rose bushes. Does anyone know of plants that have beautiful flowers to remind me of them at their graveside?I'm open to suggestions.Can anyone please help me out here?





Thank You for all the suggestions with this!

What kinds of plants/flowers can I put in my dog's memorail graves that will come back year after year?
Violas will come back every year and so will Gerbera daisies. Both a fave of mine!
Reply:Just go to any garden center and ask for perennials. You will also need to tell them whether it's for sun or shade, or a mix.
Reply:Some times bulbs wont come up if they free at the first planting, my suggestion to you is to buy them as a flower and plant them, this time use a root stimulant and good garden soil and they should come back year after year..peace Lilly's are great and too are tiger Lilly's
Reply:You might try Penta's they come in a variety of colors,grow very fast to about three feet and come back year after year. They are a bushy plant with many flowers that attract butterfly's, hummingbirds and lots of pollinaters.