What to Plant in March: Best Vegetables, Flowers, and Herbs for a Thriving Spring Garden

March marks the start of the gardening season, making it the perfect time to plant cool-weather vegetables, vibrant flowers, and fragrant herbs. Whether you're starting seeds indoors or sowing directly in your garden, this guide will help you choose the best plants for early spring. Learn how to prepare your soil, protect young seedlings from frost, and set up a flourishing garden that thrives throughout the season. Get ready to grow your best garden yet!

Lea Aguiar

3/5/20254 min read

What to Plant in Spring: Best Choices for a Thriving Garden

March marks the transition from winter to spring, making it the ideal time to dive into gardening. As temperatures begin to rise, gardeners can start planting a variety of crops tailored to their climate zone. In most regions, cool-weather vegetables like broccoli, lettuce, and peas thrive when planted early in spring. These resilient crops can endure slightly chilly weather and offer a rewarding harvest in the months to come.

Successful spring gardening also involves choosing the right location and ensuring proper soil preparation. Raised beds or well-draining areas are essential for most plants. By starting with the right foundation and selecting plants suited to the season, gardeners can enjoy a productive and beautiful garden throughout the year.

Understanding Your Garden's Climate

Before planting, it's essential to understand your local climate to ensure your garden thrives. Knowing your region's growing conditions will help you choose the right plants and the best time to start.

Know Your Planting Zone

Different areas have different temperature ranges, so certain plants grow better in some regions than others. Check your zone to determine which plants will thrive in your location. You can find your hardiness zone by searching online or using a planting guide.

For convenience, consider using gardening apps or online garden planners that recommend plant varieties based on your zone. Affiliate link: Garden Planning App

Check Your Last Frost Date

Some plants, like peas and lettuce, can handle cooler temperatures, but others need warmth to grow. The last frost date is the average date of the final frost in your area, indicating when it’s safe to plant frost-sensitive crops outdoors. Planting too early may expose young plants to cold damage, so check your local forecast and start accordingly.

For added protection, investing in row covers and frost blankets can help shield young seedlings from unexpected cold snaps. Affiliate link: Frost Protection Covers

Soil Preparation for Spring Planting

Getting your soil ready is key to a successful garden. Healthy soil provides nutrients and supports strong plant growth.

Improve Soil With Compost

Adding compost boosts soil fertility by providing essential nutrients, improving moisture retention, and encouraging beneficial microorganisms. Mix compost into the top 6 to 12 inches of soil a few weeks before planting to enrich the soil and enhance plant health.

Top Recommended Products:

  • Organic compost and soil enhancers Affiliate link: Organic Compost

  • Raised garden beds for better soil control

Ensure Proper Soil Conditions

Soil temperature and moisture affect seed germination. Most plants need soil to be at least 50°F (10°C) to grow properly. To check, press your fingers into the soil—if it’s too wet and clumps together, wait until it dries out before planting. If it’s dry and crumbly, it’s ready to go.

A soil thermometer can be a handy tool to ensure you plant at the right time.

Best Vegetables to Plant in March

March is a great time to plant cool-season vegetables that thrive in early spring. It’s also the perfect time to start warm-season crops indoors.

Plant These Cool-Weather Vegetables Outdoors

🌱 Carrots – Loose, well-draining soil helps them grow deep and straight.
🌱 Radishes – One of the fastest-growing vegetables, ready to harvest in about 30 days.
🌱 Spinach & Lettuce – Hardy greens that grow quickly in cool temperatures.
🌱 Peas – Soak seeds overnight before planting for faster germination.
🌱 Onions – Plant as sets or seeds for a summer harvest.
🌱 Beets – Thrive in nutrient-rich soil and are easy to grow.

Start These Warm-Weather Vegetables Indoors

🌿 Tomatoes – Begin indoors now so they’re ready for warm months.
🌿 Peppers – Require 6-8 weeks indoors before transplanting.
🌿 Cabbage & Broccoli – Cold-tolerant and benefit from early planting.
🌿 Eggplant – Needs a head start indoors for strong growth in late spring.

Starting these seeds indoors ensures they have a solid foundation before being moved outside. Seed starter kits make this process easier.

Flowers and Herbs to Plant in March

Adding flowers and herbs to your garden boosts beauty and attracts pollinators.

Best Flowers to Plant Now

🌼 Marigolds – Bright flowers that also repel pests.
🌻 Sunflowers – Dwarf varieties fit well in small gardens.
🌸 Sweet Peas – Great for trellises and vertical gardening.
🌺 Zinnias – Fast-growing flowers that thrive in warm weather.
💜 Snapdragons – Colorful blooms that attract bees.
🌹 Cosmos – Low-maintenance flowers that bloom all summer.

Herbs to Grow in Early Spring

🌿 Basil – Best started indoors and transplanted after the last frost.
🌿 Cilantro – Grows quickly and prefers cool temperatures.
🌿 Parsley – Slow to germinate but produces lush growth.
🌿 Dill – Easy to grow and attracts butterflies.
🌿 Chives – A perennial herb that comes back every year.

Consider using self-watering containers for easy herb maintenance.

Gardening Tips for a Successful March Planting

🌱 Check frost dates before planting sensitive crops.
🌱 Use row covers to protect young seedlings from unexpected cold snaps.
🌱 Add compost to improve soil quality.
🌱 Mulch garden beds to retain moisture and suppress weeds.
🌱 Practice companion planting to keep pests away naturally.

Investing in quality gardening tools makes the process easier.

Get Growing This Spring!

March is the perfect time to start your garden! Whether planting vegetables, flowers, or herbs, preparing early ensures a thriving and productive growing season. Choose hardy plants, prepare your soil, and start seeds indoors to get the best results.

🌿 What are you planting this March? Drop a comment below and share your gardening plans!