DH loves pavlova so I'm making him one for his birthday cake in a couple of weeks.
I've found a recipe for a rolled pav with rose cream and strawberry. It calls for sliced unsprayed rose petals.

Where would I find some? I know from watching House that florist/supermarket flowers are bombarded with weird chemicals so I don't think they fit the bill.

I just planted some rose bushes under our windows but unfortunately I don't think that any of them will be in bloom by then.

Also for cooking should one use a fragrant rose or a non-fragrant?