While talking about flowers, black is the last color to come to our mind. Black flowers are impossible to find in nature; they are actually darker shades of purple, red, or maroon.
Therefore, black flowers you might find are either dyed to look black or were genetically modified.
Meaning of Black Flowers
The black color represents the absence of color. That is why it is associated with mystery, the unknown and generally negative things.
Black is considered to be an elegant and very formal color, and evoke many emotions, but fluorography has another say in the meaning of this color.
Black flowers are mysterious and can have multiple connotations. Their meaning depends on the sender as well as the receiver.
To avoid any misunderstanding, maybe you should put a note with it explaining the message you are meaning to send.
In the language of flowers, black usually implies bad and negative things: vanity, despair and death.
Black roses, for example, represent a tragic romance and the melancholy that comes with. They can also refer to strength, mystery, power and uniqueness.
Black flowers can also mean rebirth and new beginnings in some situations, referring to the death of bad habits or the end of a regretful experience.
They can also mean pure and deep devotion to a lover, in the sense of them being exclusive and the fact that they cannot be found in the real world.
Black flowers send also a message of revenge and hate.
Using Black Flowers for Your Backyard
Planting your backyard and choosing your plants and flowers carefully is a way to express your feelings and create a place that suits your personality.
Flowers are usually associated with brightness and joy with their cheerful and soft colors.
Choosing a black flower for your backyard can add the element of surprise to the overall arrangement, and pairing them with lighter shades creates a wonderful contrast that makes them look even darker.
You have the ability of being the artist of your own backyard and make it a piece of art that will keep changing seasonally, creating a wonderful and unique look each time.
And as artists tend to be honest with their feelings, their work often expresses their true selves that are overwhelmed and with no doubt scratched with darkness.
So why not use that darkness in your backyard? But hey, we are not asking you to plant a backyard full of only black flowers; although we can imagine how curious and intrigued your neighbors and family members will look.
And to help you with that, we picked for you 20 unique black flowers that will definitely look stunning in your backyard:
1. Queen of The Night (tulip)
2. Sophistica Blackberry Hybrid (petunia)

3. Black Rose (baccara)
4. (Aeonium Arboreum)

5. Wine and Roses (weigela florida)

6. Victoriana Lace Silver Black (silver-laced primrose)

7. Arabian Night (dahlia)

8. Black Magic (colocasia)

9. Diabolo (physocarpus opulifolius)

10. Black Star (calla lily)

11. Black Beauty (elderberry)

12. Obsidian (heuchera)

13. Onyx Odyssey (hellebores)

14. Black Prince (coleus)

15. Nigra (hollyhock)

16. Molly Sanderson (viola)

17. Black Tropicanna (canna)

18. Bat Flower

19. Before the Storm (iris)

20. Black Mondo Grass


Pictures reference:
https://balconygardenweb.com/20-black-flowers-and-plants-to-add-drama-to-your-garden/