Spring is the most exciting — and most confusing — time for gardeners. The garden center shelves are packed by February, social media is full of people planting things in January that will clearly die, and meanwhile your yard is still frozen. Knowing what to plant when in spring is the difference between a thriving garden and a season of frustration.
This guide breaks down exactly what to plant in spring, organized by month and by plant type, with zone-specific adjustments throughout.
Why Spring Planting Is More Complicated Than It Looks
"Spring" doesn't mean the same thing in Minnesota and Georgia. In Zone 8 (Atlanta, Dallas, coastal Pacific Northwest), spring planting starts in February. In Zone 4 (northern Minnesota, Vermont), spring doesn't mean outdoor planting until mid-May. And "spring" itself spans three very different phases:
- 1Early spring: Still frost risk; cold-tolerant crops and cool-season flowers only
- 2Mid-spring: Last frost period; transitioning from cool to warm season
- 3Late spring: Frost has passed; warm-season crops, annuals, and tropical plants
Understanding which phase you're in — not just what month it is — is the key to spring planting success.
What to Plant by USDA Zone: Quick Reference
| Zone | Spring Planting Starts | Last Frost (avg) | Warm-Season Safe |
|---|---|---|---|
| Zone 3 (MT, northern MN) | May 1 | May 15–June 1 | Late May–June |
| Zone 4 (northern NE, WI, MI UP) | April 15 | May 7–15 | Mid-late May |
| Zone 5 (Chicago, Denver, Boston) | April 1 | April 15–May 7 | Early May |
| Zone 6 (NYC, KC, Indianapolis) | March 15 | April 1–15 | Late April |
| Zone 7 (DC, Nashville, OKC) | March 1 | March 15–April 1 | Late March |
| Zone 8 (Atlanta, Dallas, Seattle) | February 15 | Feb 15–March 15 | March |
| Zone 9 (Houston, Phoenix, LA) | February 1 | Jan 30–Feb 15 | February |
| Zone 10 (South FL, Hawaii) | Year-round | No frost | Year-round |
March: Cool-Season Crops and Early Flowers
Vegetables to Plant in March
Direct sow outdoors (zones 5–7, even with light frost risk):
- Peas: The quintessential March vegetable. Sugar snap, shelling, and snow peas germinate in cold soil (35°F+). They actually prefer cool conditions and will produce all spring before bolting in summer heat. Plant 1 inch deep, 2 inches apart. Sow as soon as soil can be worked — even in late February in zones 6–7.
- Lettuce, spinach, arugula: Cold-tolerant salad greens germinate at 40°F and handle light frost (-2°F/-3°F). Direct sow in rows or scatter in a wide band. Expect first harvest in 30–45 days. These will bolt (go to seed) when temperatures exceed 75°F consistently, so plant now for a spring harvest.
- Radishes: Fast and frost-tolerant (3–4 weeks to harvest). Great for marking rows of slower-germinating seeds and maximizing bed productivity.
- Kale and collards: Plant transplants or direct sow outdoors in March. Both handle hard frost and taste better after cold exposure (converts starches to sugars). Dinosaur/Lacinato kale is especially cold-hardy.
- Swiss chard and beet greens: More cold-sensitive than kale but still manageable with light frost protection. Start as transplants indoors if you want a head start.
Start indoors in March (for outdoor transplant in 6–8 weeks):
- Tomatoes (zones 5–6): Start seeds indoors in March for late April–May transplant
- Peppers (zones 5–7): Start 8–10 weeks before transplant; peppers are slower than tomatoes
- Eggplant: Start 8–10 weeks before last frost
- Basil: Start indoors — it's very frost-sensitive outdoors
Flowers to Plant in March
Direct sow outdoors (frost-hardy):
- Pansies and violas: Among the most cold-tolerant annuals. Transplants survive light frost; seeds germinate at 45–65°F. Plant in March for blooms through June.
- Sweet peas (flowering variety): Like garden peas, sweet peas prefer cold germination. Soak seeds 24 hours, direct sow in March for spring color. They decline in heat.
- Larkspur: A cool-season annual that reseeds prolifically. Direct sow in March; tolerates frost.
- Bachelor's buttons (cornflowers): Direct sow in March. Frost-tolerant, drought-tolerant once established, and very low maintenance.
- Snapdragons: Plant transplants outdoors in March in zones 6+. They handle frost and bloom best in cool weather.
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April: Transition Month — Cool Season Peaks, Warm Season Begins
April is the busiest month for most gardeners in zones 5–7. Cool-season crops are at peak productivity, and warm-season planting windows are opening.
Vegetables to Plant in April
Continue direct sowing cool-season crops:
- All March crops continue; succession plant every 2–3 weeks for continuous harvest
- Carrots: Direct sow outdoors in April (need consistent moisture for germination). Loosen soil 12 inches deep. Thin to 2–3 inches apart.
- Bok choy and Asian greens: Fast-maturing (30–50 days), frost-tolerant, very productive
- Green onions/scallions: Direct sow thickly; harvest young
Warm-season crops for zones 7–8+ (or with row cover in zones 5–6):
- Potatoes: Plant seed potatoes in April in zones 5–8. Cut into pieces with at least one eye each; let cut ends dry 1–2 days before planting 4 inches deep, 12 inches apart. They tolerate light frost.
- Brassicas (broccoli, cabbage, cauliflower): Transplant hardened-off seedlings in April. These are cool-season crops that need to mature before summer heat.
Flowers to Plant in April
Transplants outdoors after last frost (zones 6–7):
- Petunias: After last frost; provide color all summer
- Marigolds: After frost; excellent companion plants with vegetables
- Impatiens: Shade-tolerant; transplant after frost in April–May
- Dianthus: Hardy annuals that handle light frost; great for borders
Perennials and bulbs:
- Summer bulbs (plant in April in zones 5–7): Dahlias, gladiolus, cannas, caladiums — all go in after soil warms above 60°F. Don't rush; cold soil rots bulbs.
- Divide and replant perennials: Spring is the best time to divide hostas, daylilies, coneflowers, and ornamental grasses. Replant divisions or share them.
Seeding annual wildflower mixes:
- April is peak time to broadcast annual wildflower seed mixes. Remove existing vegetation, rake soil, scatter seed, press into contact with soil, water gently.
May: Full Steam Ahead — Warm-Season Planting
For zones 5–7, May is when the real warm-season planting happens. Frost risk drops dramatically, soil is warm, and everything moves fast.
Vegetables to Plant in May
Transplant warm-season crops outdoors:
- Tomatoes: The quintessential May transplant in zones 5–6 (see our full when to plant tomatoes guide)
- Peppers and eggplant: Set out after tomatoes — they're more heat-demanding
- Cucumbers: Direct sow or transplant in May. They hate cold soil; wait for consistent 65°F soil temps
- Squash and zucchini: Direct sow or transplant; very productive, very fast. Plant 3–4 feet apart.
- Beans (pole and bush): Direct sow once soil hits 60°F. One of the easiest and most productive crops.
- Corn: Direct sow in blocks (minimum 4 rows wide) for pollination. Needs consistent warmth.
- Melons: Only worth growing in zones 6+ where you have 80–90 warm days. Use black plastic mulch to boost soil temp.
- Basil: Plant outdoors in May after all frost risk is past. Basil is very frost-sensitive; a single frost will kill it.
Flowers to Plant in May
Annuals for summer color (after last frost):
- Zinnias: Direct sow in May in full sun for vivid summer color. Among the easiest flowers to grow.
- Sunflowers: Direct sow after last frost. Stagger plantings 2–3 weeks apart for continuous bloom. Giant varieties take 75–85 days to bloom.
- Cosmos: Direct sow in May. Self-sowing, drought-tolerant, produces endlessly
- Nasturtiums: Direct sow in May. Edible flowers, extremely easy, zero maintenance once established
- Morning glories: Direct sow around trellis or fence. Nick seeds before planting for faster germination.
Perennials and ornamental plants:
- Plant container perennials now: Daylilies, coneflowers, rudbeckia, salvia, Russian sage, penstemon — all great to plant in May
- Ornamental grasses: Plant in May for establishment before summer heat
- Groundcovers: Creeping thyme, sedum, ajuga — all plant well in May
Trees and Shrubs: When to Plant in Spring
Spring is excellent for planting trees and shrubs, with one caveat: earlier is better. A tree planted in March in zone 7 has 3 months to establish before summer heat. One planted in June has much less.
Best practices for spring tree and shrub planting:
- 1Plant as early as soil can be worked — even zone-hardy plants benefit from a longer establishment window
- 2Avoid planting during heat waves — the first 6 months are the highest-stress period
- 3Water deeply and less frequently — encourage deep root growth (deep weekly watering beats shallow daily watering)
- 4Mulch 3–4 inches around the base (not touching the trunk) to retain moisture and moderate soil temperature
Best trees to plant in spring:
- Native oaks: Plant early; establish slowly but grow into landscape anchors
- Serviceberry (Amelanchier): Beautiful spring blooms, fall color, wildlife value
- Redbud (Cercis canadensis): Stunning spring bloom; zones 4–9
- Japanese maple: Plant in spring before heat; water consistently first year
- Dogwood (Cornus florida): Native woodland beauty; spring blooms
- Crabapple: Disease-resistant modern varieties; spring bloom, fall fruit
Best shrubs to plant in spring:
- Viburnum species: Among the most versatile shrubs; plant in March–April
- Native azaleas: Plant in early spring in acid soil
- Spirea: Very adaptable; plant after last hard frost
- Knock Out Roses: Hardy; plant in April–May after last frost
Spring Lawn Care: What to Plant and When
Spring lawn work should be strategic:
Do in early spring (before grass greens up):
- Soil test (tells you exactly what fertilizer you need — skip the test, skip the guesswork)
- Dethatch if thatch layer exceeds ½ inch
- Overseed thin areas of cool-season lawns (before temps exceed 60°F — warm soil wakes up crabgrass)
Do in mid-spring:
- Apply pre-emergent herbicide (crabgrass preventer) when soil reaches 50–55°F — typically when forsythia blooms
- Overseed cool-season lawns ONLY if you skipped pre-emergent (they're incompatible)
Do in late spring:
- First fertilization of warm-season lawns (bermuda, zoysia, centipede) when grass fully greens
- Aerate warm-season lawns after growth is active
- Avoid overseeding warm-season lawns in spring (wait for late summer/fall)
Making the Most of Your Spring Garden Layout
The best spring gardens are planned before the first shovel hits the ground. Key questions that determine your success:
- Where does morning vs. afternoon sun fall in each bed?
- Which areas stay wet or drain poorly after rain?
- Where do you want the most visual impact (entry, view from kitchen, patio)?
- How much maintenance time do you realistically have?
A well-designed yard works with your sun exposure, soil, and lifestyle rather than fighting it. The free Yardcast AI designer can help you figure out where to place vegetable beds, perennial borders, and hardscape based on a photo of your actual yard — not a generic plan that ignores your specific conditions.
Spring doesn't wait. The window between "too cold" and "too hot" for many cool-season crops is only 6–8 weeks. Start seeds at the right time, harden them off properly, and you'll be harvesting salad by late April and tomatoes by July.