March is when the gardening year truly begins: the soil wakes up, the light stretches, and the seed packets become seedlings in earnest. It is also the busiest month of spring — sow too little and you miss the season; sow everything at once and you drown in seedlings.
The trick to March is working in priority order. Some jobs genuinely cannot wait — potatoes in the ground, tomatoes on the windowsill — while others flex by weeks without penalty. If you are brand new, this is the month to read our first vegetable garden guide and start executing. Here is exactly what to do this March in Central and Western Europe, in priority order. Published in late October so you can plan ahead — read it now, and arrive in March knowing precisely what to do.
| Job | Why now | How |
|---|---|---|
| Plant seed potatoes | Soil warming; chitted and ready | Trenches or holes, 30 cm apart, earth up |
| Sow tomatoes & peppers indoors | They need the long warm season | Windowsill or propagator, maximum light |
| Direct sow hardy crops | They germinate in cool soil | Broad beans, spinach, radish, peas outdoors |
| Prepare beds | Planting season is here | Weed, rake level, warm soil under fleece |
| Feed fruit trees & bushes | First feed of the year | Mulch with compost around (not against) stems |
| Spring-clean the greenhouse | Seedlings move in soon | Wash staging, check vents, set up benches |
| Start successional sowing | Stagger harvests, avoid gluts | Little and often beats all-at-once |
Step 1: Plant your seed potatoes
March is potato-planting month: the chitted seed potatoes from February go into the ground as the soil warms. Plant 30 cm apart in trenches or individual holes, sprouts up, and cover with soil. Earth up as the haulms grow.
See our potato growing guide for the full method, and choose blight-resistant varieties while ordering (our blight guide explains why). Early varieties planted now crop from June.
Step 2: Sow tomatoes and peppers indoors
Late March is the moment for tomatoes and peppers on the windowsill or in a propagator — early enough for a long season, late enough to avoid the legginess of February sowings. Maximum light from day one.
Our seed-starting guide covers the method; guard against damping off with fresh compost and bottom-watering. One sowing now beats two failed early ones.
Step 3: Direct sow the hardy crops outdoors
March soil is cool but workable — perfect for the hardy direct sowings: broad beans, spinach, radishes and peas. Sow in rows, water in, and protect from slugs and pigeons. Sow a little more thickly than the packet says — cool soil means patchier germination, and you can thin later.
Warm the soil first by laying fleece or cloches over the bed for a week or two — a few degrees makes germination dramatically faster. Do not sow tender crops outdoors yet; courgettes, sweetcorn and pumpkins wait for May.
Step 4: Prepare the beds — weed, rake, warm
Before the planting rush, get every bed ready: weed thoroughly, rake level, and top up mulch where it has thinned. Beds prepared now accept transplants and sowings all season without another big effort. Pull any overwintered weeds before they set seed — one March weed pulled is a hundred summer weeds prevented.
Check the soil is workable — it should crumble, not smear. If it is still sodden, wait: working wet soil destroys its structure (see our soil basics guide). Patience with wet ground pays all year.
Step 5: Feed the fruit — first feed of the year
Give fruit trees, bushes and strawberries their first feed: a generous mulch of compost around (never against) the stems. This single job feeds the whole season's cropping — fruit is hungry just as it wakes up, and compost mulch delivers nutrients slowly exactly when roots need them.
Tidy strawberry beds — remove dead leaves, check for slug damage — and net against birds before the fruits swell. A March-fed strawberry bed crops heavily in June.
Step 6: Think in successions, not single sowings
The March mindset shift: sow little and often. A short row of lettuce every two weeks beats one giant sowing that all matures at once. Same for radishes, spinach and spring onions. Write each sowing date on a plant label or in a notebook — in six weeks you will not remember what went where.
Start the habit now and it runs all season — continuous harvest instead of feast and famine. Our first vegetable garden guide shows how to plan the year's rotations around it.
Troubleshooting: March problems
Late frost after sowing outdoors: Keep fleece handy all month — one cold night can wipe out germinating seeds. Cover vulnerable sowings whenever frost threatens; remove by day.
Slugs shredding young seedlings: March's damp nights are peak slug season. Protect with copper tape, wool pellets or nightly torchlit patrols — see our pests guide.
Soil too wet to work: Do not force it — work from boards, or wait. A week's patience now beats a season of compacted soil.
Indoor seedlings going leggy: Not enough light — the classic March windowsill problem. Move to the brightest spot, and see our leggy seedlings guide before they stretch beyond saving.
What to do this October
Reading this in late October? March is months away — which is exactly why planning now wins. Use autumn to set up your March: finish the October, November, December, January and February jobs first, then order seeds now while choice is best.
The single most valuable October action for March: mulch every bed (see our mulching guide). Beds put to bed properly need only a rake-over in March — leaving you free for the sowings that start the year.
Frequently asked questions
What is the single most important March job?
Planting potatoes and sowing tomatoes indoors — the two crops that most reward timely action. Everything else can flex by a week or two.
Is it safe to plant out seedlings in March?
Only the hardy ones — broad beans, onions, peas. Tender crops (tomatoes, courgettes, beans) stay indoors until May. Frost is still very possible.
When should I start feeding?
Fruit gets its compost mulch now; vegetables are fed at planting time and through the season. Do not feed dormant plants.
Can I sow grass seed or wildflowers in March?
Late March, once soil warms past about 8°C — wildflower mixes sown now establish well before summer. Keep them watered until established.
Related guides
- February Garden Checklist: What to Do Now (Europe) — last month's first sowings
- Starting Seeds Indoors: A Beginner's Guide — the method for March sowings
- How to Grow Potatoes at Home: Beginner's Guide — this month's biggest planting job
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