Spring Garden Preparation Checklist 2026

A productive garden season starts long before the first seed hits the soil. This checklist walks you through spring preparation week by week, so nothing gets missed.

Adjust timing based on your zone. Coastal BC gardeners will be ahead of this schedule; prairie and northern gardeners may shift everything two to four weeks later. Use our frost dates guide to calibrate for your area.

Early March (Weeks 1-2): Planning and Indoor Work

This is the planning phase. The ground is still frozen across most of Canada, so focus on organizing, ordering, and starting your indoor growing operation.

Planning Tasks:

[ ] Review last year's garden notes. What worked? What failed? What will you grow differently this year?
[ ] Sketch your garden layout. Decide which beds will grow what, keeping crop rotation in mind.
[ ] Order seeds if you have not already. Popular varieties sell out by mid-March.
[ ] Inventory your supplies: seed starting mix, pots, trays, labels, grow lights, fertilizer.
[ ] Create a planting schedule. Our garden calculator can generate precise dates based on your location.

Indoor Growing:

[ ] Set up grow lights and heat mats. Test that everything works before your first sowing.
[ ] Start slow-growing seeds: peppers, onions, leeks, celery, and artichokes.
[ ] Check stored seeds for viability. Seeds older than 2-3 years may need a germination test.

Tool Maintenance:

[ ] Sharpen pruning shears, loppers, and hoes.
[ ] Oil wooden tool handles to prevent cracking.
[ ] Clean and disinfect pots and trays from last season with a 10% bleach solution.
[ ] Check hoses and irrigation equipment for damage.

Mid-March (Weeks 3-4): Soil Assessment and Early Outdoor Work

As days lengthen and temperatures start to moderate, begin transitioning to outdoor preparation where possible.

Soil Work:

[ ] Collect soil samples and send to a lab for testing. Results take 1-2 weeks. Test for pH, organic matter, and major nutrients (N, P, K).
[ ] If your soil test results come back, plan amendments accordingly. Most Canadian garden soils benefit from comite, lime (if pH is below 6.0), and balanced organic fertilizer.
[ ] Turn your compost pile. If it froze over winter, break it up and mix in green material to restart the heating process.

Outdoor Assessment:

[ ] Walk your garden and note any winter damage: heaved perennials, broken trellises, damaged cold frames.
[ ] Check raised beds for frost heaving, loose boards, or rotting wood.
[ ] Clear large debris, fallen branches, and accumulated leaves.
[ ] Prune fruit trees and berry bushes before buds break. Remove dead, damaged, or crossing branches.

Indoor Growing:

[ ] Start tomatoes (timing depends on your zone; see our March seed starting guide).
[ ] Start eggplant, tomatillos, and ground cherries.
[ ] Up-pot any seedlings that are outgrowing their cells. Peppers and onions often need 4-inch pots by now.
[ ] Begin fertilizing seedlings with half-strength liquid fertilizer once they have their first true leaves.

Early April (Weeks 5-6): Bed Preparation Begins

In most of southern Canada, April is when the real outdoor work begins. Snow is melting, and in warmer zones the soil is becoming workable.

Soil Preparation:

[ ] Test soil moisture before working it. Squeeze a handful: if it crumbles, it is ready. If it forms a sticky ball, wait.
[ ] Remove any remaining mulch from annual beds to let soil warm.
[ ] Apply compost. Spread 5-8 cm of finished compost over all garden beds.
[ ] Incorporate amendments based on your soil test: lime, sulfur, rock phosphate, greensand, or balanced organic fertilizer.
[ ] For new garden beds, consider the biointensive method for deep soil preparation and maximum productivity.

Infrastructure:

[ ] Repair or replace damaged trellises, stakes, and supports.
[ ] Set up cold frames or low tunnels over beds where you plan to transplant brassicas or lettuce early.
[ ] Install drip irrigation or soaker hoses if you use them. Test for leaks before the season gets busy.
[ ] Set up rain barrels to capture spring runoff.

Outdoor Planting (Zones 5+):

[ ] Direct seed peas as soon as soil is workable.
[ ] Sow spinach, lettuce, and radishes under row cover.
[ ] Plant onion sets and garlic (if not planted in fall).
[ ] Transplant overwintered perennial herbs.

Mid-April (Weeks 7-8): Ramp Up

The pace accelerates. Seed starting, outdoor planting, and bed preparation are all happening simultaneously.

Indoor Growing:

[ ] Start cucumbers, squash, and melons (3-4 weeks before planned transplant date).
[ ] Start basil, dill, and cilantro indoors.
[ ] Start flower seedlings: marigolds, zinnias, cosmos, and nasturtiums.
[ ] Begin hardening off brassica transplants. Move them outside for 1-2 hours in a sheltered spot, increasing daily.

Outdoor Work:

[ ] Continue direct seeding cold-hardy crops: more lettuce, spinach, beets, carrots (Zones 5+).
[ ] Transplant hardened-off brassicas under row cover (Zones 5-6).
[ ] Weed emerging beds early. Small weeds are far easier to manage than established ones.
[ ] Top-dress perennial beds with compost.
[ ] Divide and transplant perennial herbs: chives, oregano, thyme, lovage.

Pest Preparation:

[ ] Install cutworm collars (cardboard tubes or toilet paper rolls) around transplants.
[ ] Set up slug traps if slugs are a problem in your garden.
[ ] Order or prepare row cover for flea beetle protection on brassicas.
[ ] Check stored potatoes for sprouting and prepare seed potatoes for planting.

Late April to Early May (Weeks 9-12): Full Speed

This is the busiest period. Everything is happening at once.

Outdoor Planting:

[ ] Plant potatoes (Zones 5+). Cut seed potatoes 2 days before planting, plant 10-15 cm deep.
[ ] Direct seed beets, carrots, and parsnips.
[ ] Sow more succession lettuce and radishes.
[ ] Transplant onion seedlings from indoor starts.
[ ] Plant broad beans and fava beans.

Hardening Off (All Zones):

[ ] Begin hardening off tomatoes, peppers, and eggplant 7-10 days before your planned transplant date.
[ ] Harden off cucumbers and squash.
[ ] Harden off annual flowers.

Final Preparations:

[ ] Lay down mulch pathways between beds.
[ ] Prepare staking systems for tomatoes: cages, stakes, or the Florida weave.
[ ] Fill watering cans and check that all irrigation is functional.
[ ] Stock up on row cover, twine, and plant clips.

May: Transplanting Season

Once your last frost date passes (or is imminent), it is time to move tender transplants outdoors.

[ ] Transplant tomatoes, peppers, and eggplant after last frost.
[ ] Transplant cucumbers, squash, and melons into warm soil (15 C+).
[ ] Direct seed beans, corn, and sunflowers after last frost.
[ ] Apply mulch around transplants: straw, shredded leaves, or landscape fabric.
[ ] Set up drip irrigation for the summer.
[ ] Take a moment to appreciate how much you have accomplished. The hard work of spring preparation is about to pay off.

Tips for Staying Organized

Keep a garden journal. Record what you planted, when, and where. This information is invaluable for planning next year.

Use a planting calendar. Build a schedule at the start of the season and check it weekly. Our garden planning calculator creates customized timelines based on your crops and frost dates.

Prioritize soil health. Compost, cover crops, and minimal tillage build soil structure over time. The time you invest in soil now pays dividends for years.

Spring preparation is not glamorous work, but it is the difference between a garden that thrives and one that struggles. Check off these tasks systematically, and you will head into summer with confidence.

Spring Garden Preparation Checklist 2026