Can't believe I didn't see these guys mentioned yet:
Interflora.
Flowers from Interflora
Works awesome around Europe at least (used them a dozen or so times myself) and prices are very reasonable because instead of sending flowers from some central depot they find a florist nearest to your specified recepient and that florist will make the bouquet and deliver it. I can send gorgeous bouquets to my family for like a tenner and they sent me some beautiful baskets when my baby was born last spring.
Apparently they deliver in 140 countries
International Flower Delivery -Interflora