I know better but I didn't check the granular rose fertilizer instructions before applying it because I used it before and thought I remebered them correctly. I didn't.

I applied one cup of Parkwood's rose, soft berry and flower fertilizer when I should I have used one/half.

After I mixed it in to the first few inches of soil, I realized I made a mistake. I watered the rose very heavily in order to leach out the excess fertilizer. Can any one think of anything else to do and do you think that extra half cup will cause harm?

Anxious and waiting, in Southern Ontario.