What cuts through buds and makes a black mess?
I have only ONE rose left and that's a climbing David Austin - I think it's 'Eden' - pale peach edges and even paler inside. I've never had a problem until this week - something cut a blackish colored swath through the buds and it almost opened completely up - like I could take a 'lid' off the bud. There's nothing inside and I see no bugs or worms. Any ideas? I love this rose and need to know what I can use on it that isn't poison.