For many gardeners, annuals are a go-to solution for many garden needs. Annual flowers are a quick way to fill empty spots in flowerbeds, and early-blooming spring annuals make great additions to container gardens. A mix of annual plants can offer a colorful solution for windowbox plantings. However, for any garden, there are dozens of annuals that might work for particular sun/shade situations, soil conditions, and color/plant preferences. The Plant Encyclopedia is a sortable plant database that helps you narrow down the best annuals for your growing conditions, as well as the annual flowers that offer the color and growing habit you prefer.