The March seasonal planting guide will help you kick off the gardening season, providing a fantastic opportunity to prepare your garden for lush growth in the months ahead. Here’s an enriched, detailed guide on what to plant, how to cultivate effectively and when to harvest your produce, ensuring your garden reaches its fullest potential.
Our March seasonal planting guide will cover vegetables like Broad Beans and carrots. We will also cover indoor gardening plants to prepare plants for the next season, as well as fruits and flowers to make your garden look pretty.
Vegetables
Broad Beans
Why Grow Broad Beans: Broad beans are exceptionally productive, easy to manage and yield large pods, offering substantial harvests from just a small patch.
Sowing Your Broad Beans: Sow directly outdoors, 5cm deep and 20cm apart, in rows 30cm apart.
When to Harvest Your Broad Beans: June to August, when pods are visibly swollen.
Carrots
Why Grow Carrots: Carrots are versatile, nutritious and can thrive even in small spaces, making them ideal for various gardens.
Sowing Your Carrots: Sow thinly, 1cm deep, in rows 15-30cm apart.
When to Harvest Your Carrots: From June onwards, when roots reach your preferred size.
Parsnips
Why Grow Parsnips: Parsnips are hardy vegetables that improve flavour with frost, providing delicious roots throughout winter.
Sowing Your Parsnips: Sow seeds 2cm deep, 15cm apart, in rows 30cm apart.
When to Harvest Your Parsnips: October to February; best after the first frost enhances sweetness.
Beetroot
Why Grow Beetroots: Beetroot is easy to cultivate, offers quick results and is packed with vitamins. It can be harvested continually through the season.
Sowing Your Beetroots: Sow seeds 2cm deep, spaced 10cm apart, in rows 30cm apart.
When to Harvest Your Betroots: June to October, ideally harvested when roots reach golf ball size.
Onions
Why Grow Onions: Onions store well, are easy to manage, and are essential kitchen staples, making them a practical garden addition.
Sowing Your Onions: Sow thinly, 1cm deep, with rows 25-30cm apart.
When to Harvest Your Onion’s: Late July through September, when foliage begins to yellow.
Lettuce
Why Grow Lettuce: Fast-growing lettuce provides regular, fresh salad leaves throughout the season, making it ideal for repeated harvests.
Sowing Your Lettuce: Sow thinly, 1cm deep, rows 30cm apart, thinning plants to 15cm apart.
When to Harvest Your Lettuce: From May onwards, harvest outer leaves or entire heads as needed.
Radishes
Why Grow Radishes: Radishes mature rapidly and add vibrant colour and crunch to salads.
Sowing Your Radishes: Sow seeds 1cm deep, 2-5cm apart, in rows 15cm apart.
When to Harvest Your Radishes: Approximately four weeks after sowing.
Peas
Why Grow Peas: Peas are productive and easy to grow. They can be eaten fresh, cooked or frozen for later use.
Sowing Your Peas: Sow 3cm deep, 5cm apart, in rows 60cm apart.
When to Harvest Your Peas: June onwards, when pods are plump yet tender.
Spinach
Why Grow Spinach: Spinach offers multiple harvests from one sowing, supplying continuous nutrient-rich greens.
Sowing Your Spinnach: Sow seeds thinly, 2cm deep, rows 30cm apart.
When to Harvest Your Spinach: Pick outer leaves regularly from May through to July.
Indoor Sowing Vegetables
Tomatoes, Chillies, Cucumbers and Peppers
Why Grow: These plants thrive in warmth, producing abundant fruits with rich flavours superior to shop alternatives.
Sowing: Start indoors at 18-21°C. Transplant outdoors once frost risk passes.
Harvest: July to October, with continual picking.
Fruits
Bare-root Fruit Trees & Bushes
Why Grow: Fruit trees and bushes provide long-term yields, enhancing biodiversity and adding visual appeal.
Planting: Dig deep holes and backfill with nutrient-rich soil. Use our organic Natural Gardener Compost Plus, which is packed with nutrients your tree or bush needs after a cold, hard winter.
Harvest: Typically, from late summer to autumn.
Strawberry Runners
Why Grow Strawberries: Strawberries offer delicious, fresh fruit and rapidly multiply to fill garden spaces efficiently.
Planting Your Strawberries: Space runners 30-45cm apart in fertile, moisture-retentive soil.
When to Harvest Your Strawberries: June to August.
Flowers
Cornflowers and Poppies (Hardy Annuals)
Why Grow Cornflowers and Poppies: Hardy annuals are easy to cultivate, attract pollinators and provide vibrant seasonal colour.
Sowing Your Annuals: Sow seeds outdoors, lightly covering them with soil.
Flowering: Cornflowers and Poppies will bloom from June to September.
Dahlias and Zinnias (Half-Hardy Annuals)
Why Grow Dahlias and Zinnias: Half-hardy annuals bloom spectacularly in late summer and autumn, providing vibrant colour and cut flowers.
Sowing Your Dahlias and Zinnias: Sow under cover, transplant after frost.
Flowering: Your Dahlias and Zinnias will bloom from July to October.
Geranium, Astrantia, and Oriental Poppies (Perennials)
Why Grow Perennials: Perennials offer longevity and repeat flowering annually improving garden structure and aesthetics.
Planting Perennials: Plant in enriched, well-draining soil, preferably in sun or partial shade.
Flowering: Your March Perennials will flower from spring to early summer.
Lilies and Gladioli (Summer Bulbs)
Why Grow Summer Bulbs: Summer bulbs offer dramatic colour displays and work well both in borders and as cut flowers.
Planting Summer Bulbs: Plant bulbs 10-15cm deep, spaced 15cm apart in well-draining soil.
Flowering: Your summer bulbs will flower from Mid to late summer.
General Gardening Tips for March
- Soil Preparation: Organic compost improves soil fertility and structure to ensure optimal plant growth. Our range of compost and fertilisers is a great way to boost soil health and nutrients.
- Succession Planting: Sow crops like salads and radishes every few weeks to extend your harvest period. Give your table more greens throughout the years.
- Weather Vigilance: The weather in March can be unpredictable, so monitor weather forecasts to protect sensitive seedlings from late frosts.
By following this detailed March seasonal planting guide, your garden will flourish throughout the year, offering bountiful harvests and beautiful displays of flowers.
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