March is the busiest month for gardeners. The days get longer, the sun shines stronger, and now is the perfect time to sow crops with a long vegetation period.
Here’s a detailed guide on which crops are worth sowing for seedlings in March to get a rich harvest in summer.
1️⃣ Tomatoes
This is the main crop for March.
▪️First half of March: sow tall (indeterminate) varieties and late-ripening hybrids. They need more time to develop strong stems.
▪️Second half of March: time for mid-ripening and short (determinant) varieties, which yield faster.
Tip: If you plan to plant tomatoes in open ground, don’t rush with sowing at the beginning of the month — the seedlings may overgrow.
2️⃣ Peppers and Eggplants
If you haven’t sown them in February, the first ten days of March is your last chance. These crops are "slow starters" (germinate in 7–14 days) and love warmth, so they need a long time before being transplanted outdoors.
3️⃣ Cabbage
March is ideal for early and mid-season varieties:
▪️White cabbage: early varieties for summer salads.
▪️Broccoli and cauliflower: they tolerate spring temperature fluctuations better.
▪️Kohlrabi: grows quickly and produces tender bulbs.
4️⃣ Onion (from seed)
Sowing onions (for example, varieties like Exhibition) for seedlings in March allows you to get a large, full-sized bulb in one season, skipping the set (seedling) stage.
5️⃣ Annual flowers
To make your garden bloom as early as possible, in March sow:
▪️Asters and petunias: tiny seeds that need a lot of light.
▪️Marigolds: for early flowering on balconies or flowerbeds.
▪️Zinnias and snapdragons: they tolerate pricking out well.
Main rules for March sowing
✅ Supplemental lighting: Although days are longer, young sprouts may still lack light, especially on cloudy days.
✅ Temperature: Seedlings need +22–25°C, but as soon as the first "loops" appear, it’s best to lower the temperature for 3–4 days so the seedlings don’t get leggy.
✅ Soil quality: Use a light, loose substrate that lets air through well.
🌱 March is all about balance: you can actively sow, but you still need to think strategically.
