Nowadays, colourful sheets of paper are sometimes used instead of seeds or grain. Throwing seeds or grain may not be appealing to all couples. Just imagine the newlyweds stepping out of the church in a shower of nuts. However, paper confetti is not very often allowed to be used as, of course, it is just more litter for venues to deal with.
It makes sense, therefore, to use more environmentally friendly versions of the confetti including delphinium flower petals and/or rose petals as a much more acceptable alternative to sheets of paper and the majority of churches and wedding venues are happy for this to be thrown because it is biodegradable.
So the next time you see a newlywed greeted by a shower of confetti, you’ll know the reason behind this custom.