March sits at a critical hinge between winter’s retreat and spring’s advance, making it one of the most active months for gardeners. What you plant in March determines whether you harvest early summer abundance or wait until the heat of high summer to enjoy fresh produce. Cool-season crops gain momentum as daylight increases, while tender annuals and summer bulbs push roots into warming soil. Understanding regional climate nuances and soil conditions is essential for timing these plantings correctly.
Cool-Season Vegetables to Sow Directly
In many climates, March is the ideal window to sow cool-season vegetables directly into prepared beds. These crops tolerate light frosts and even improve in flavor after a cold snap, developing sugars that protect their tissues. Consistent moisture and well-drained soil are key to steady germination and uniform growth.
Leafy Greens and Brassicas
Lettuce (leaf, romaine, and crisphead varieties)
Spinach, arugula, and mizuna for quick harvests
Broccoli, cauliflower, and Brussels sprouts transplants or seeds
Kale and collards for continuous leaf production
Root and Allium Crops
Radishes, carrots, and beets sown in deep, stone-free soil
Onion sets and leek starts for early-season bulk
Garlic cloves planted in sunny, well-composted beds
Starting Warm-Season Crops Indoors
While soil outdoors may still be cool, starting warm-season crops indoors in March gives them a head start for summer production. Seeds sown now will develop sturdy root systems before transplanting, leading to earlier harvests and stronger yields. Use grow lights and bottom heat to promote even germination and prevent legginess.
Transplants for Heat Lovers
Tomatoes, including cherry and heirloom types
Peppers (sweet and hot varieties)
Eggplant and tomatillos for long-season crops
Cucurbits like zucchini, squash, and cucumbers if started in peat pots
Summer Bulbs and Tubers March is prime time for planting ornamental and edible bulbs that store energy in their roots and emerge as temperatures rise. These structures skip the early vegetative stage and push straight up, providing immediate impact in the garden or kitchen. Good drainage prevents rot, especially in heavy clay soils. Gladiolus corms for vertical color and cut flowers Dahlias in mild climates or containers started indoors Elephant ears and caladiums for bold tropical foliage Asparagus and rhubarb crowns for long-lived perennial harvests Herbs and Edible Landscaping
March is prime time for planting ornamental and edible bulbs that store energy in their roots and emerge as temperatures rise. These structures skip the early vegetative stage and push straight up, providing immediate impact in the garden or kitchen. Good drainage prevents rot, especially in heavy clay soils.
Gladiolus corms for vertical color and cut flowers
Dahlias in mild climates or containers started indoors
Elephant ears and caladiums for bold tropical foliage
Asparagus and rhubarb crowns for long-lived perennial harvests
March offers a chance to integrate herbs and edible plants into ornamental spaces, maximizing both beauty and productivity. Many culinary herbs germinate quickly in moderate temperatures and establish before the main growing surge. Selecting compact or dwarf varieties suits smaller gardens and container setups.
Basil, cilantro, and dill for successive sowing every few weeks
Chives, parsley, and mint (in containers to control spread)
Rosemary and sage in well-drained, sunny border spots
Strawberries and blueberries planted with acidic soil amendments
