Hi! Around here, places like Michael's, Hobby Lobby, and Joann Fabrics usually have good things for bouquets and other arrangements. Sometimes you can even find supplies at Dollar Tree!
For boutonnières, you really only need florist's tape to wrap the bottom of the flower and a pin. They can be very inexpensive since they are just a single flower usually!
It is trendy now to just wrap bridal bouquets in a pretty satin ribbon, and then put them in a vase for decoration at the reception. (Be careful doing that beforehand so that it doesn't drip down the dress during the ceremony!) You could also try to find those little water tubes for the flowers and then wrap the satin around those as well.
If you want the lace cone type bouquet with the green foam oasis, I've seen those at Wal-mart.
As far as inexpensive flower sources, grocery stores can have some good options.
Don't necessarily rule out using a florist though. They give free consultations, and even though I used to work at a flower shop and had planned to do all of my own flowers, I actually found one that they could do it as cheaply as I could myself because they could get better prices on flowers and supplies. The lady knew what it was like to be on a tight budget and directed me to beautiful flowers that I wouldn't have thought about that were less expensive. It never hurts to ask! (Inquire at different shops because the prices can REALLY vary.)
Rose petals, strands of ivy or even pretty confetti with candles or candles floating in bowls of water (from Dollar Tree) can be really pretty in place of table arrangements. (You could even tint the water with a little bit of food coloring to match the color scheme.)
May is such a gorgeous time here. We often have lilacs by then, which are sooooo pretty in vases and smell fantastic. I think azaleas are in bloom around then too. If you're farther north, branches of forsythea in vases or made into simple swags with ribbon would be pretty.
You could also buy tulips or daffodils in pots and then wrap the pots in something pretty to use them as decorations for the ceremony/reception and then plant them later. You might be able to get some lavender in little pots at that point. Those replant beautifully in full sun and smell wonderful.
Oh, if you've never used florist's tape (which I've seen a lot at Dollar Tree) it's not really sticky until it is against itself, so you overlap it as you wrap the stems.
I hope this helps!
P.S. You might do a search on YouTube for instructions on making your own. I've learned all sorts of unique things on YouTube! :-)
"...for the happy heart, life is a continual feast. Better to have little, with fear for the Lord, than to have great treasure and inner turmoil." Proverbs 15:15b-16 NLT
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