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- Native to North America but are typically associated with Zone 4 and Zone 8,
Least Bluet or Houstonia pusilla is a tiny plant that can be difficult to spot in the wild because it is only 2 to 4 inches in height, or 6 inches maximum height wise. It's native to the United States and can be called tiny bluet, small bluet, or star violet. It is a wildflower that has flowers and a skinny stem with branches near the midsection of the plant. There are four solid colored petals, and they are purple-blue or deep violet, or white with a red-purple center and yellow focal point, and face the direction of upwards toward the sky. This plant blooms in March or April and has leaves that are extremely small and straight. There are a total of seven bluets in Missouri, and some are larger than others. These plants include basal leaves and grow in wet meadows, sandy woods, or glades, and fields in acidic soils. It is safe to pick and handle on your own. It is part of the Rubiaceae family and genus Houstonia under the species pusilla. Least Bluet is annuals that cover the ground and need to be watered regularly. They should be set 3 to 6 inches apart and gather complete sun exposure. The bloom time is early or late spring or summer, and the soil pH requirements are 5.0-6.5 pH. It can become an invasive plant amongst others and seen as a weed, therefore. They can be found on ledges and in between stones and spotted when the grass has been clipped or cut. They will all be the same kind of flower and the same size. They are fast-growing and can be found on hillsides and grow throughout the summer when they are in blossom the most. They are supposed to give a feeling of peace and tranquility.