Oops! Pansies don't take all that long to germinate, but several weeks to develop into a transplantable size, longer to bloom. Also, seed collected from pretty hybrids won't reproduce plants of the same quality. Seed collection from pansies is never recommended for this reason.

You haven't left yourself very much time to grow plants from seeds. Perhaps someone else can come up with something that will produce a decent sized plant in less than a month....I can't think of anything. ;-(

Best wishes to your daughter! This is an exciting time for everyone!

Pansies really aren't typically as attractive when the hottest months arrive. By mid-summer they tend to get leggy and less profuse in their blooms. I would look for a garden center that sells flats of blooming plants that are in nearing their peak now (and preferrably drought tolerant since those tiny containers can dry out fast).

I was recently looking for shower/wedding favors for a friend and came across a number of websites that have seeds imbedded in paper. They are made in various forms like placecards, bookmarks, small boxes, and die-cut shapes. You can give them to your guests to plant in their own gardens or containers. Here's just one of many places that offer these.

Here is a link that might be useful: Botanical Paperworks