Use the verb burgeon to describe something that is growing, expanding, and flourishing. If you have a green thumb, in the spring your flower gardens will burgeon in a cacophony of color. If you don't have a green thumb, your collection of plastic plants will burgeon.
Although burgeon means to grow and flourish, it doesn't necessarily have to apply only to plants. Your town can have >burgeoning downtown development. Your tiny retirement account can burgeon into an excellent emergency fund if you invest even a small amount each month. You may have a burgeoning career as a villain if you overthrow a planet by using your mind-controlling ray gun on the populace.