1. CELOSIA
Celosia are vivid annual plants that have dazzling flower heads in colors such as bright red, orange, yellow, or pink. There are lots of varieties to choose from to add to your backyard beds or cut flower garden and can grow your own plants from seed in early spring, starting them off around six weeks before the last frost for your location.
2. COLUMBINE
Columbine, or aquilegia, is a spring flowering perennial plant that will regrow every year to give you beautiful displays of bell-shaped flowers. They can be direct sown into the ground after the last frost of spring, or started earlier indoors. However, plants grown from seed will not bloom until their second year.
3. COSMOS
Cosmos are one of the easiest flowers to grow from seed and March is a great time to start off these popular plants and give them the longest flowering season possible. Sowing in early spring will mean earlier blooms come summer, as cosmos can take under 100 days to go from sowing to flowering.
4. MARIGOLD
Marigolds are fantastic annual plants that are both beautiful, but also highly useful. As part of companion planting, marigolds can actually keep bugs away from other plants, including aphids and whiteflies. Marigolds are great, and highly versatile. plants that can be used in beds and borders, raised beds, container gardens, or grown in kitchen gardens to keep pests off your edible crops.
5. NICOTIANA
Nicotiana is a half-hardy annual that produces highly fragrant flowers that are trumpet-shaped and can come in various shades of white, pink, red, and more. The blooms are produced from summer through to fall and the flowers attract bees and other pollinators as part of a healthy and thriving wildlife garden.
6. SWEET PEA
Sweet peas are perennial favorites among gardeners and these cottage garden classics come in a huge variety of varieties and colors. March is a great time to plant sweet peas, either indoors in colder climates or outside directly into flower beds in warmer US hardiness zones come the end of the month.
7. ZINNIA
Zinnias are colorful additions to any backyard ideas and there are many different varieties to choose from. The flowers can be single, double, globe, or cactus-shaped, among many forms zinnia blooms can take, and different types can range in height from compact forms to tall zinnia that reach several feet in the air.