March marks the turning point. The days are getting longer, the weather (hopefully!) a little milder, and the gardening itch is in full swing. Even if you only have a small balcony or patio, March is the perfect time to get sowing. A few well-chosen vegetables can transform even the tiniest urban space into a productive mini-farm.
Veggies to Sow Indoors in March

Starting seeds indoors gives your vegetables a head start, especially important with our unpredictable British weather. Plus, it's a great way to fill those empty seed trays and dream of warmer days. A sunny windowsill or a small grow light will do the trick.
Tomatoes are a must-grow, and March is the ideal time to sow them indoors. Choose compact varieties like 'Patio' or 'Tumbler' if you’re short on space – they thrive in containers. Peppers and chillies also benefit from an early start indoors. Remember, they like warmth, so a propagator or a warm spot in the house is ideal.
Aubergines, another heat-loving veggie, can be sown indoors in March. Look for smaller, bushier varieties suitable for pots. Finally, consider starting some herbs indoors, like basil and parsley. They'll be ready to move outdoors once the risk of frost has passed.
Direct Sowing Outdoors in March
While some vegetables need the warmth of indoors, others can be sown directly into the ground (or pots!) in March, weather permitting. Keep an eye on the forecast and be prepared to cover seedlings with fleece if a late frost is threatened.
Getting the Ground Ready
Before sowing outdoors, it's essential to prepare your soil. Remove any weeds and stones, and dig in some compost or well-rotted manure to improve drainage and fertility. If you're growing in containers, use a good quality potting mix.
What to Sow
Here are a few reliable options for direct sowing in March:
- Spinach: A quick-growing crop that can be harvested in just a few weeks. Choose a bolt-resistant variety to prevent it from running to seed in warmer weather.
- Radishes: Another fast-growing option, radishes are perfect for adding a peppery kick to salads. Sow them in succession every few weeks for a continuous harvest.
- Salad Leaves: Sow a mix of salad leaves like lettuce, rocket, and mustard greens for a constant supply of fresh salads.
- Broad Beans: These hardy beans can withstand cooler temperatures and are a rewarding crop to grow.
- Peas: Similar to broad beans, peas can be sown directly in March, providing a delicious harvest later in the spring.
Container Gardening in March
Even if you don't have a garden, you can still enjoy growing your own vegetables in containers. A sunny balcony, patio, or even a windowsill can provide enough space for a surprising variety of crops. Just make sure your containers have drainage holes to prevent waterlogging.
Consider a few dwarf varieties like bush beans, dwarf carrots, or even compact cucumbers that will thrive in pots. Don't forget about herbs! Many herbs, like thyme, rosemary, and mint, are well-suited to container growing.
Protecting Your Early Sowings
March weather can be unpredictable, so it's essential to protect your early sowings from frost and pests.
Fleece is your best friend! Use it to cover seedlings and protect them from frost and cold winds. Netting can also be used to protect crops from birds and other pests. Keep an eye out for slugs and snails, and take action to control them before they damage your plants.
Watering and Feeding
Regular watering is essential, especially for seedlings and container-grown vegetables. Water deeply but less frequently, rather than shallowly every day. Avoid overwatering, which can lead to root rot.
Once your plants are established, start feeding them with a liquid fertiliser every few weeks. Choose a fertiliser that is specifically formulated for vegetables.
Sowing vegetables in March is a rewarding way to kickstart your gardening season. Even a small space can yield a surprising amount of fresh produce. So grab your seeds, get your hands dirty, and look forward to a bountiful harvest! Imagine fresh salads and homegrown tomatoes brightening up your summer meals – it all starts now.