Note: This post hasn't been updated in over 2 years.
When is it nicest to give flowers? When they’re free. Well, don’t tell the ladies that. Vectortuts+ have done the legwork for you in a roundup article by Sean Hodge called 70+ Free Graphics: Vintage Vector Flowers and Floral Ornament Sets.
Have the need for free summer vector graphics, specifically free vector flowers and floral ornaments, then you’ve found a compilation worth downloading. There are numerous vintage flower illustrations, as well as sets of ornaments, useful for many design project purposes, from weddings to special summer events. Step into this stockpile of retro vector floral graphics, which are all available for free download.
Many, but not all, or the images are licensed for commercial use, but always be diligent and check the license for yourself before use.
Here’s an example: