4.5 Million Baby Blue Flowers Bloom across Japanese Park like A Never-Ending Sea of Blue Lights

The Menzies' Baby blue is an annual plant and doesn't usually last through the winter, so it's best planted in early spring to bloom all through summer. If you're in the USDA hardiness zones 2-10, the plants would fare well in your garden. When the flower blooms, the petals completely cover the tiny stems, and while the plant is very small in size, it's mostly never grown indoors.