As the arrival of March ushers in longer days and warmer temperatures, gardeners are reminded that it is the perfect time to sow flower seeds for a flourishing summer garden. With careful selection of blooms, one can achieve a vibrant array of colors that will thrive from spring through to the fall. Here are seven foolproof flower seeds to plant this month, ensuring a stunning display all summer long.
Zinnias: Vibrant Colors and Easy Growth
Zinnias are a top choice for those looking to fill their gardens with color that lasts until the first frosts. These flowers are not only easy to grow but also ideal for cutting, especially the long-stemmed varieties. To plant, ensure the soil is crumbly and sow seeds directly in a sunny spot, spacing them according to packet instructions. Once seedlings emerge, thin them to about 15 inches apart to accommodate their bushy growth. If the March window is missed, zinnia seeds can still be sown outdoors until May. For a head start, sow them indoors in trays with seed compost, transferring them to a sunny windowsill or heated propagator as needed. Notably, zinnias begin to self-seed as soon as flowers start to fade, promising a repeat of their stunning display in the following season.
Sweet Peas: The Scented Garden Star
Sweet peas are cherished not only for their delightful fragrance but also as one of the finest cutting flowers. In warmer regions, sowing can begin early, but for many, March is the ideal time to start indoors. This year, consider the Eckfords Finest Mix Heirloom sweet pea seeds, featuring a charming palette of colors. To cultivate these flowers, plant the seeds in root trainers or cardboard tubes filled with seed compost, ensuring they are about half an inch deep. After watering thoroughly, place them in a cool location until germination occurs, which may take up to three weeks. Once seedlings reach about 4 to 6 inches, pinching back the central growing tip encourages bushier growth.
Nigella: Filling Gaps with Elegance
Nigella, also known as Love in a Mist, is an excellent choice for filling gaps in summer borders. These hardy annuals thrive in cooler conditions and can be sown successively throughout the season. Simply sprinkle the seeds where desired, covering them lightly with soil. Nigella is also known for its prolific self-seeding nature, making it a favorite among gardeners. They grow well in nearly any well-draining soil, and their delicate blue flowers are particularly striking.
Nasturtium: Versatility and Easy Growth
Nasturtiums are another fantastic option for March sowing. Their seeds are straightforward to plant, and these vigorous plants can quickly cover gaps in flowerbeds. After the last frost, sow nasturtium seeds directly into well-draining soil in a sunny location. Germination occurs within 7 to 14 days, and seedlings should be thinned to about 14 inches apart. Known for attracting pollinators, nasturtiums can also be enjoyed in salads, adding both beauty and flavor to your garden.
Stocks: Timeless Fragrance
Stocks are celebrated for their sweet scent and are a classic addition to any garden. Although patience is required, as they bloom the following summer, their vibrant colors and lovely fragrance make them worth the wait. Sow seeds in trays indoors, lightly covering them with soil, and place them in a sunny location until germination. Once seedlings develop two true leaves, they can be transplanted into pots for further growth before being planted outside in the fall.
Poppies: Bold Blooms for Impact
For those seeking bold, eye-catching flowers, poppies are an excellent choice. These large blooms offer vibrant colors that can enhance any summer garden. Seeds can be sown directly into well-raked soil in a sunny area. It is recommended to scatter seeds without covering them, as they are small and may get lost in the soil. Mixing them with sand can help with spreading.
Coreopsis: Long-Lasting Blooms
Coreopsis, or tickseed, is ideal for gardeners looking for long-flowering options. This native flower produces bright yellow, red, or orange blooms and is easy to cultivate from seed. Coreopsis can be sown directly in the ground this month, with seedlings thinned to about 6 inches apart. For a head start, seeds can be sown in trays under cover during late winter, later transitioning them outdoors.
In conclusion, March is a prime time for sowing these seven flower seeds that promise to transform gardens into vibrant displays of color and fragrance. Planning and timing are crucial for a successful gardening experience, so consider this list as a guide to creating a stunning summer garden. For more gardening tips and inspiration, subscribe to gardening newsletters that deliver the latest features and advice right to your inbox.
