A blue rose is very hard to reproduce or find, although some floral companies are trying to do it naturally. Others just dye them. To some a blue rose symbolizes “mystery” and to others “attaining the impossible”. A blue rose given can symbolize the rarity of your partner. You have attained the impossible​~one was left on my car 🚗 then they left a rainbow 🌈 one. I still don’t know who did this, suppose it’s why they left the blue one~