Posted: 05/01/2014 at 19:06
Hard to tell from the picture but they don't look too healthy. Indoors isn't where they wanted to be. Have another go and leave them outside. Sown around now, outside or in a cold GH, they will germinate in spring. Unless you have a very small rose it will be a lot bigger than 1 1/2 inches by this time next year.
My Rosa rugosa, sown late last year, flowered in July/august at 18inches tall.
Treat them more harshly