When picking out impatiens, always look at the tag for information on the height and spread of the plant. Too often, gardeners pick out their impatiens based just on the color of their blooms. But that exact color may come in a tall, medium or short plant. The different types are called series. One of the best compact, spreading series is called Super-Elfin.
Accent is a good medium size series.
And Blitz is a series of impatiens that grows tall. Unless you are careful, you might end up picking out three plants whose blooms are identical but the plants will grow to different heights. There are many other series on the market, so be sure to check the tags. Double Impatiens With larger, showier blooms that look like miniature roses, double impatiens have come a long way in the past few years. The older varieties tended to be too tall and leggy, but the new varieties are much more compact.