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March marks the beginning of spring in Zone 4, a time when gardeners can start preparing their gardens for a vibrant season. Choosing the right annuals to plant in March can transform your outdoor space into a colorful haven. Here are some of the best annuals to consider for Zone 4 gardens in March.
Top Annuals for March Planting in Zone 4
- Petunias
- Marigolds
- Snapdragons
- Sweet Alyssum
- Calendula
These annuals are popular choices because they offer a range of colors and textures, and many can be started indoors early or directly sown outdoors once the soil warms up.
Details on Each Annual
Petunias
Petunias are versatile and provide vibrant blooms in shades of pink, purple, white, and red. They thrive in full sun and well-drained soil. Starting petunias indoors in early March allows for early blooms in your garden.
Marigolds
Marigolds are hardy and easy to grow, with bright yellow and orange flowers. They help repel pests and are perfect for borders or containers. Sow marigold seeds directly in the garden after the last frost date.
Snapdragons
Snapdragons add vertical interest and come in many colors. They prefer cooler temperatures, making March an ideal time to start them indoors for transplanting later. They attract pollinators like bees and butterflies.
Sweet Alyssum
Sweet Alyssum produces delicate clusters of tiny flowers in white, purple, or pink. It is excellent for edging beds or hanging baskets. It prefers cooler weather and can be started indoors or sown directly outside.
Calendula
Calendula, also known as pot marigold, offers cheerful orange and yellow blooms. It is tolerant of cooler temperatures and can be sown directly into the garden in early spring. Calendula also has medicinal uses.
Tips for Success in Zone 4
- Start seeds indoors 6-8 weeks before the last expected frost date.
- Use cold frames or protect young plants from late frosts.
- Ensure well-drained soil and adequate sunlight for optimal growth.
- Harden off indoor-started plants gradually before transplanting outside.
With proper planning and care, planting these annuals in March will set the stage for a colorful and lively garden throughout the spring and summer in Zone 4.