What to sow in March: the botanis.it guide to sowing in seedbeds, pots, and open ground

March officially marks the beginning of spring and, for the gardener, the true kickoff of the season. The days are getting longer, temperatures are rising (albeit with the last hints of cold), and it's the perfect time to prepare both the soil and the seedlings that will give life to your summer garden.

Knowing what to sow in March is crucial to making the most of your time. Botanis.it offers a comprehensive overview of the most important sowings to do this month, distinguishing between those that require protection (a seedbed) and those that can go directly into the ground.

The 3 stages of sowing in March

March sowings are divided into three main categories, depending on the plant's cold tolerance and speed of germination.

1. Protected sowing (seedbed): For more demanding, long-cycle plants (e.g. tomatoes, peppers). A warm, bright location is required (house, cold greenhouse).

2. Sowing in open ground (direct): For cold-resistant or short-cycle vegetables (e.g. radishes, carrots).

3. Sowing in pots/balconies: For those with limited space, favor vegetables that grow well in containers.

Vegetables to sow in March: the complete list botanis.it

Here's a selection of must-have vegetables to plant or seedbed this month.

In the (protected) seedbed: prepare the queens of summer

Species that require a long period of time to grow and mature should be sown indoors in March. This way, the seedlings will be ready for transplanting outside in May, once the risk of frost has passed.

• Tomatoes: The later and more robust varieties (such as the Cuore di Bue) should be sown now to have an abundant harvest from July onwards.

• Peppers and chili peppers: They require constant warmth (20-25°C) to germinate. Sowing in March is essential to obtain ripe fruit before autumn.

• Eggplants: Very sensitive to cold, they require starting in a warm seedbed to develop a robust root system.

• Basil: This aromatic herb, a symbol of summer, can be sown in pots, kept indoors, and then moved outside only when temperatures stabilize.

In open ground: quick direct sowing

These vegetables tolerate the cooler temperatures of early spring well and can be sown directly into the garden.

• Radishes: Very fast-growing (harvest in 30-40 days), they're ideal for catching the first crop. They should be sown in small batches, staggered.

• Carrots: They prefer cool soil and should be sown directly to avoid damaging the roots during transplanting. Choose soil free of rocks.

• Spinach and cutting lettuce: These salads are cold-hardy and can be sown in rows. Lettuce is excellent for harvesting leaf by leaf.

• Peas: These vegetables love temperate climates and should be planted in early March. Remember to set up stakes or support nets for climbing plants immediately.

Useful herbs and flowers

March is the ideal time to start perennial and annual herbs:

• Parsley: Very slow to germinate, sowing in March is the last chance for a good harvest before summer.

• Dill and fennel: Can be directly sown for leaf and seed production.

• Marigold and cornflower: Sowing useful flowers in the middle of the garden not only beautifies it, but also attracts pollinating insects, essential for future tomato and zucchini blooms.

Soil preparation: the secret to success

Regardless of what you sow in March , preparing the soil is half the battle.

• Digging: If the soil hasn't been worked in the fall, it's time to dig (or hoe) to aerate and break up clods.

• Base dressing: Incorporate mature compost or well-rotted manure. This provides the basic nutrients needed for the growing cycle.

• Leveling: Remove stones and level the surface before direct sowing, especially for carrots and radishes, which require soft soil.

By following this plan, your March garden will be well on its way to a rich and productive summer.