Seeing the popularity of this little green plant makes me smile. Succulents have been around for ages, growing quietly in sunny gardens, mostly unnoticed by anyone but gardeners. Now using succulents for weddings is big money!
My grandmother grew succulents in her gardens and it's my first memory of what she called, "hens and chickens". Larger, pointy green plants with runners on which smaller "baby" plants grew. They are easy to grow (and use as wedding favors) because they retain water and can survive periods of drought.
A cactus is a succulent, but the succulents we are talking about are not cacti. They are cute and colorful, broad leafed, rose shaped plants. Single plants make cute little favors, and grouped together they make a stunning and unique centerpiece. Added to a bridal bouquet, they supply texture and interest. Given to wedding guests, they are the perfect little thank-you gift that won't be tossed into the trash.
They are hardy and hold up very well in floral arrangements, and offer marvelous color and texture to a tablescape.
If you are planning a country, rustic, outdoor, or barn wedding, I'm betting that you will have some succulents somewhere in the decorations.