March in the Garden

March is when the gardening year truly begins. The light has shifted. Afternoons stretch a little longer, and the soil no longer feels quite so cold under your hands. You can almost feel the garden stretching and waking up. Trays start to fill the windowsill, seed packets come out, and the garden begins to feel possible again.

It’s a busy, hopeful month. Time to get seeds in, prepare beds and enjoy that quiet satisfaction that comes from starting

You’ll find the full list for March sowing in the Easy Seed Planner.

🥕 Vegetable Highlights

Sow indoors (windowsill or heated propagator): aubergines, chillies, peppers, tomatoes, and celery.
Sow under cover (cold frame, cloches, grow-house or unheated greenhouse): beetroot, cabbage, cauliflower, kale, spinach, peas, broad beans, salad leaves and spring onions.
Sow outside: parsnips, carrots, beetroot, turnips, radish, leeks and early lettuce once the soil has warmed.
Plant out: onion sets, shallots, garlic, and early potatoes towards the end of the month in mild areas.
Tip: keep fleece or cloches handy — March weather can swing from spring sunshine to frosty mornings overnight!

Veggie jobs this March…

• Prepare seedbeds by raking soil to a fine crumbly texture while it’s damp and workable.
• Warm the ground for sowing by covering beds with fleece or cloches.
• Keep sowings small and staggered for a steady harvest later.
• Feed overwintered brassicas and spring greens with a light fertiliser.
• Mulch established rhubarb plants or start forcing a few for an early crop.
• Keep on top of weeds before they get a head start.
• Make sure your compost heap is covered but still aerated.

🪴 Herby Highlights & Things to Do

• Sow basil, parsley, chives, dill, coriander and thyme indoors.
• Divide and replant clumps of mint, chives and lemon balm.
• Trim old growth from hardy herbs like sage and rosemary to encourage new shoots.
• Pot up a few extra herbs for friends — they make great gifts later in spring.
• Top-dress pots with fresh compost if herbs are already established.

🌻 March Flower Power

• Sow hardy annuals such as calendula, cornflowers, and nigella directly outside in mild areas.
• Start half-hardy annuals (cosmos, marigolds, petunias, zinnias) under cover.
• Deadhead early flowers like primroses and pansies to keep them blooming.
• Plant summer-flowering bulbs such as lilies and gladioli.
• Lift and divide snowdrops after flowering.
• Prune roses and cut back winter shrubs ready for new growth.
For more ideas, filter the flowers by sow in March in the Easy Seed Planner.

🍓 Fruity Actions

• Plant new strawberry plants or runners.
• Feed fruit bushes with general fertiliser and mulch around the base.
• Check and tighten supports on canes and wires.
• Prune out damaged or crossing branches on currants and gooseberries.
• Finish pruning apple and pear trees before buds burst.
• Check for signs of early aphids or scale insects on young shoots.

🧹 General Bits and Bobs

• Repair paths and raised bed edges after winter wear and tear – it’s a good excuse for that first proper afternoon outside.
• Keep weeding — it’s amazing how fast they start to appear!
• Set up water butts if you haven’t already, and make sure they’re clean.
• Keep bird feeders topped up, and clean them regularly.
• Brush down your compost bins and turn the contents if it’s compacted.
• Have a tidy-up in the shed — you’ll be in and out of it constantly now.

🌱 Seedling Care & Early Growth

Seeds sown last month will be springing into life now, so it’s time to give them a bit of care.

• Turn trays regularly so seedlings grow straight.
• Water gently from below or use a fine mist to avoid washing them out.
• Thin crowded trays to give plants room to grow.
• Prick out seedlings into small pots once they’ve got two true leaves.
• Keep them in bright light and avoid overheating sunny windowsills.

A little daily attention now leads to strong, healthy plants later — it’s one of the most rewarding parts of spring gardening.

🌸 March is made for growers.

Everything’s waking up. The light is back, the soil is warming, and those first small sowings signal that the season has properly begun. A bit of effort now will soon bring trays of healthy seedlings and garden beds full of promise. Check the Easy Seed Planner and our March Offers for ideas to keep your garden thriving this spring.