When everyone thinks that a cactus plant is aversive and radiate negativity and absorb energy, I found this impression is similar to what people tend to describe a one person. As a human nature, we tend to automatically judge others, critique the way they look or speak, label them with some stereotypes, or even humiliate their point of view.
A cactus plant is metaphorically such as the human being. Life sometimes gets so harsh on one person where he/she feels lonely and in agony. Sometime life goes dry and arid; but sooner or later it is going to make us bloom. I believe one human being is brave enough to endure all things, no matter how painful or difficult. People mind to get closer to a cactus plant for its thistles. They tend to avoid a person for his/her physical appearance; but guess what?!
The cactus flower is a symbol of maternal love because it can endure and thrive in harsh conditions. Cactus means the power and loneliness of the desert, endurance, thriving despite challenges, sharing love and warmth especially from a mother to a child, and protection from danger and threats.
A final message form a person who loves cactus, you got to stand still no matter what, and you are going to bloom, despite it all!