Innocence.
 White an inherently positive color, is associated with innocence and of course the white roses are not the exception.
If you want to express a love is pure and clean or a friendly appreciation,then give or send white flowers or roses are the best option.
Never forget that special occasion even if is friend or your mom this beautiful flowers will make them a beautiful and brigth day.
Express that special affection to your friends and family, white and pure roses in a vase.