The carnation is a popular flower that has a history dating back over 2000 years! They are the birth flower of January and the official flower of Mother's Day. Carnations are a favourite flower for many as they are inexpensive, long-lasting and come in an array of colours. Purple is the best hue of carnation to give a friend that you find unpredictable or impulsive. If you're apologizing to someone, a bouquet of these flowers will indicate that you've had a change of heart and ready to patch up your differences.