Spring Vegetable Garden Tasks: When to Plant Cool-Season Crops (Zone 5ish Planting Guide)

Wondering what to plant in early spring and when to plant cool-season vegetables? A successful spring vegetable garden starts with a few simple tasks and a clear planting timeline.

Tom Thumb Peas

Cool-season crops are among the easiest vegetables to grow and often yield the first harvests of the year. With the right preparation and a step-by-step schedule, you can plant confidently and enjoy fresh greens, roots, and brassicas long before summer arrives.

This guide covers:

• Essential spring vegetable garden tasks

• What vegetables to direct sow vs. transplant

• A Zone 5 planting timeline for cool-season crops

• Tips for ongoing spring garden care

(Timing is based on cold-climate regions similar to USDA Zone 5. Adjust slightly for your local frost dates.)

Early Spring Vegetable Garden Tasks

Begin garden prep once the soil is workable—no longer frozen and not overly wet.

• Remove old plant debris and weeds

• Add 1–2 inches of compost

• Lightly loosen the soil surface

• Check irrigation or watering access

• Review seed packets (actually read them!) and planting dates

• Create a simple garden layout; sketch out on a piece of paper, nothing fancy!

Working wet soil leads to compaction. If soil forms a sticky clump, wait a few days before planting; your seeds might not germinate and could rot before sprouting!

Detroit Beets

What Are Cool-Season Vegetables?

Cool-season vegetables thrive in mild temperatures and tolerate light frost. Most grow best when soil temperatures range between 40–65°F.

Common cool-season crops include:

• Lettuce

• Spinach

• Arugula

• Kale

• Swiss chard

• Peas

• Carrots

• Beets

• Radishes

• Turnips

• Broccoli

• Cabbage

• Cauliflower

• Onions

• Leeks

Direct Sow vs. Transplant: How to Plant Spring Vegetables

Vegetables to Direct Sow in Spring

These crops prefer being planted directly in garden beds:

• Peas

• Carrots

• Radishes

• Turnips

• Beets

• Spinach

• Arugula

• Lettuce

• Cilantro

• Dill

Vegetables to Transplant in Spring

These grow best from indoor-started seedlings or purchased transplants:

• Broccoli

• Cabbage

• Cauliflower

• Kale (can direct sow)

• Swiss chard (can direct sow)

• Onions (sets or seedlings)

• Leeks

Carrots at the SF Ferry Building

Zone 5 Spring Planting Timeline for Cool-Season Crops

Using weeks before your average last frost date provides more reliable timing than calendar dates. In many Zone 5 areas, the last frost occurs around mid-May.

6–8 Weeks Before Last Frost

Direct Sow Outdoors	Start Seeds Indoors	Garden Tasks
Peas	Broccoli	Prep beds
Spinach	Cabbage	Plan crop layout
Radishes	Cauliflower
Arugula	Kale
Turnips	Swiss Chard

4–6 Weeks Before Last Frost

Direct Sow Outdoors	Transplant Outdoors	Garden Tasks
Carrots	Onion sets or seedlings	Thin seedlings
Beets		Protect crops with row cover if needed
Lettuce
Spinach
Radishes
Cilantro
Dill

2–4 Weeks Before Last Frost

Direct Sow Outdoors	Transplant Outdoors	Garden Tasks
Additional lettuce	Broccoli	Harden off seedlings
Carrots	Cabbage	Apply light mulch
Radishes	Cauliflower
Peas	Kale
	Swiss chard

Around Your Last Frost Date

Direct Sow Outdoors	Garden Tasks
Final spring successions of greens	Install trellises
Beets	Begin planning warm-season crops
Carrots

Radishes from my garden

Succession Planting for Continuous Harvests

Plant small amounts of fast-growing crops every 1–2 weeks. This method provides steady harvests and prevents having too much produce at once. It's hard to eat 20 radishes in one sitting...unless they are roasted!

Best crops for succession planting:

• Lettuce

• Spinach

• Radishes

• Arugula

• Carrots

Spring Vegetable Garden Maintenance Tips

• Water consistently; not a soggy bed, do the finger test.

• Harvest regularly; the more you harvest, the more will grow!

• Remove damaged leaves

• Monitor for pests

• Cover plants during cold snaps

Healthy soil and compost at planting time usually provide enough nutrition for cool-season crops.

Start Small and Build Confidence

You don’t need to plant everything at once, as hard as it is! Choose a few favorite crops, follow the timeline, and expand over time. Consistent, simple actions lead to the best results, I promise!

Want Help Planning Your Spring Garden?

Heirloom Kitchen Gardens offers in-person and virtual garden consultations to help you plan, plant, and grow a productive vegetable garden with ease. Together, we’ll create a personalized planting plan that fits your space and schedule.