Zone 5 gardens handle winter lows of -20 to -10 F, and that rules out less than you might think. Most classic perennials, nearly every vegetable, and a long list of flowering shrubs grow well here; the real limits are a growing season of roughly 140 to 170 frost-free days and the occasional late May freeze. The plants below are reliable in both zone 5a (-20 to -15 F) and 5b (-15 to -10 F), grouped by vegetables, perennial flowers, shrubs and trees, with a planting calendar and tips to make the most of a short season.
In this guide
Key Takeaways
- Last spring frost in zone 5 usually falls between mid-April and mid-May; first fall frost between late September and mid-October.
- Choose perennials and shrubs rated to zone 4 or colder if you’re in 5a or a windy, exposed site.
- Start tomatoes, peppers and eggplant indoors 6 to 8 weeks before last frost; direct-sow cool crops as soon as soil can be worked.
- Cool-season crops like kale, spinach, garlic and carrots thrive here and stretch the harvest into November.
- Microclimates matter: a south-facing wall can act like zone 6; a low frost pocket like zone 4.
What Zone 5 Means
USDA hardiness zones are based on the average annual extreme minimum winter temperature. Zone 5 covers a broad band across the northern US: much of Iowa, Nebraska, northern Illinois, Indiana and Ohio, southern Michigan and Wisconsin, central Pennsylvania, upstate New York, parts of New England, and higher elevations in Colorado, Utah and the Northwest interior. Check your exact zone on our USDA hardiness zone map guide, since a single county can straddle 5a and 5b.
Zones only measure winter cold. They don’t capture summer heat, humidity, rainfall or soil. A zone 5 garden in Denver deals with alkaline soil, dry air and hail; one in Cleveland deals with heavy clay and lake-effect snow. Use the zone to rule plants in or out for cold, then match them to your soil and moisture.
Zone 5 Planting Calendar
| Timing | What to do |
|---|---|
| Early to mid-March | Start onions, leeks and slow perennials indoors |
| Late March to early April | Start tomatoes, peppers and eggplant indoors (6 to 8 weeks before last frost) |
| Early to mid-April | Direct-sow peas, spinach, lettuce, radishes; plant onion sets and potatoes once soil is workable |
| Late April | Transplant broccoli, cabbage, kale; sow carrots and beets |
| Mid to late May | After last frost, plant tomatoes, peppers, squash, beans, corn, basil |
| July | Sow fall carrots, beets, kale and bush beans |
| August | Sow spinach, lettuce, radishes for fall |
| Late September to October | Plant garlic, spring bulbs, trees and shrubs |
Your local frost dates may run a week or two earlier or later than this. Soil temperature is a better guide for warm crops: wait until it’s at least 60 F at 2 inches before setting out tomatoes and sowing beans.
Best Vegetables for Zone 5
Cool-season stars
- Garlic: Plant hardneck types in October; they need the cold. Harvest in July.
- Peas: Sow in early April. Done by early July before heat sets in.
- Spinach and lettuce: Spring and fall crops; spinach overwinters under a row cover in many zone 5 gardens.
- Kale and collards: Frost improves the flavor; harvest into December.
- Carrots, beets, parsnips: Parsnips left in the ground through winter turn sweet.
- Broccoli, cabbage, Brussels sprouts: Transplant in late April for summer heads; Brussels sprouts mature in fall frost.
- Potatoes: Plant in mid to late April when soil reaches about 45 F.
Warm-season crops that fit the season
- Tomatoes: Favor varieties maturing in 60 to 80 days from transplant, such as ‘Early Girl’, ‘Celebrity’, ‘Juliet’ and most cherry types. Big beefsteaks work but start them early.
- Peppers: Sweet bells and jalapeños do fine; super-hot types like habanero need a warm spot or a black plastic mulch.
- Bush beans and pole beans: Sow after soil warms in late May; succession-sow until mid-July.
- Summer squash and zucchini: Productive and quick.
- Winter squash and pumpkins: Choose 85- to 100-day varieties and plant right at the frost-free date.
- Sweet corn: Plant in blocks for pollination; early and mid-season varieties are safest.
Perennial edibles
Asparagus, rhubarb, horseradish, strawberries, raspberries, blueberries (with acidic soil), hardy grapes and most apples, pears and tart cherries grow well in zone 5. Peaches are borderline; choose cold-hardy varieties like ‘Reliance’ and a protected site. Figs need winter protection or a container you can move into a garage.
Best Perennial Flowers for Zone 5
| Plant | Hardy to | Bloom time | Light |
|---|---|---|---|
| Purple coneflower (Echinacea) | Zone 3 | July to September | Full sun |
| Black-eyed Susan (Rudbeckia) | Zone 3 | July to October | Full sun |
| Peony | Zone 3 | Late May to June | Full sun |
| Daylily | Zone 3 | June to August | Sun to part shade |
| Hosta | Zone 3 | Summer foliage, July flowers | Shade to part shade |
| Catmint (Nepeta) | Zone 3 or 4 | May to September with shearing | Full sun |
| Russian sage | Zone 4 | July to September | Full sun |
| Siberian iris | Zone 3 | Late May to June | Sun to part shade |
| Bee balm (Monarda) | Zone 3 or 4 | July to August | Sun to part shade |
| Sedum ‘Autumn Joy’ | Zone 3 | August to October | Full sun |
| Hardy geranium ‘Rozanne’ | Zone 5 | June to frost | Sun to part shade |
| Astilbe | Zone 4 | June to July | Part shade |
Spring bulbs are a zone 5 strength. Tulips, daffodils, crocus, alliums and hyacinths all get the winter chill they need to bloom. Plant them in October, 6 to 8 inches deep for tulips and daffodils. Daffodils and alliums are the most reliable at returning year after year and are left alone by deer and rodents.
Rozanne, listed above, is rated to zone 5 and is a favorite for its months of blue flowers; our Rozanne geranium care guide covers it in detail.
Shade perennials
For north sides and under trees, the cold-hardy shade palette is deep: hostas, astilbe, bleeding heart, coral bells (Heuchera), Japanese painted fern, ostrich fern, Solomon’s seal, lungwort (Pulmonaria), brunnera and hellebores, which bloom in late March or April through the last snow. Hellebores and brunnera are also deer resistant. Plant shade perennials 12 to 24 inches apart depending on mature size, and mulch them with shredded leaves, which mimics the woodland floor they come from.
Native perennials for zone 5
Natives evolved with your winters and support local pollinators. Good zone 5 choices across the Midwest and Northeast include butterfly weed and swamp milkweed for monarchs, wild bergamot, New England aster, blazing star (Liatris), golden Alexanders, prairie dropseed, little bluestem, great blue lobelia for wet spots, and wild columbine for part shade. Most are drought tolerant once established and need little fertilizer. Leave the stems standing over winter; they hold snow, shelter overwintering insects and feed birds.
Best Shrubs for Zone 5
- Panicle hydrangea (Limelight, Vanilla Strawberry, Bobo): Hardy to zone 3 or 4 and blooms on new wood, so winter dieback never costs you flowers. See our Vanilla Strawberry hydrangea care guide.
- Smooth hydrangea (Annabelle, Incrediball): Zone 3, part shade.
- Lilac: Common lilac and compact types like ‘Miss Kim’ love cold winters.
- Ninebark: Zone 3, colorful foliage, tough in clay and drought.
- Spirea: Zone 4, compact and easy.
- Serviceberry: Zone 4, spring flowers, edible berries, fall color.
- Red-twig dogwood: Zone 3, red winter stems, good in wet spots.
- Arborvitae and juniper: Evergreen structure and screening.
- Shrub roses: Choose hardy lines rated to zone 4 for the least winter dieback.
Bigleaf hydrangeas grow in zone 5, but most bloom on old wood that gets frozen back; choose reblooming types and protect them in late fall. Boxwood survives but often winter-burns in exposed sites; plant it out of winter sun and wind.
Trees That Thrive in Zone 5
Red maple, sugar maple, white and bur oak, river birch, ginkgo, honeylocust, Kentucky coffeetree, serviceberry, redbud (hardy northern seed sources), crabapples and many Japanese maples all grow well. Japanese maples such as Bloodgood and coral bark types do best in sheltered 5b spots out of the wind. Avoid planting borderline trees like crape myrtle, southern magnolia and most palms in the ground.
Tips for Stretching a Short Season
- Raised beds: Warm up and drain faster in spring, often letting you plant a week or two earlier.
- Row covers and cold frames: Add several degrees of frost protection, extending spring and fall harvests by weeks.
- Black plastic mulch: Warms soil for peppers, melons and squash.
- Wall of water or cloches: Protect early tomato transplants from cold nights.
- South-facing walls: Use them for heat lovers and borderline perennials.
- Mulch after the ground freezes: A few inches of shredded leaves or straw over perennials prevents freeze-thaw heaving.
- Water before freeze-up: Evergreens and new plantings go into winter better with moist soil.
Pushing the Zone Safely
Gardeners in 5b often succeed with zone 6 plants in protected spots: against a heated house wall, in a courtyard, or under a thick snow cover. Treat these as experiments. Buy small, plant in spring so roots have a full season, and mulch well the first winters. If you want more options, compare our lists for zone 6 plants, zone 7 plants and zone 8 plants; anything that appears only on those lists needs a microclimate or a pot you can move indoors.
For vegetable bed layout, soil prep and crop rotation, our vegetable gardening guide picks up where this list leaves off.
Frequently Asked Questions
What is the difference between zone 5a and 5b?
Zone 5a averages winter lows of -20 to -15 F; zone 5b averages -15 to -10 F. In 5a, favor plants hardy to zone 4 for a safety margin.
When is the last frost in zone 5?
Usually between mid-April and mid-May, depending on location and elevation. Check local records and wait for warm soil before planting tender crops.
Can I grow lavender in zone 5?
Yes, English lavender types like ‘Munstead’ and ‘Hidcote’ are hardy to zone 5 in well-drained soil. Wet winter soil kills lavender faster than cold does.
What perennials bloom all summer in zone 5?
Catmint, Rozanne geranium, coneflower, black-eyed Susan, Russian sage and reblooming daylilies give the longest summer color.
When should I plant trees and shrubs in zone 5?
Early fall, from September to mid-October, and spring after the ground thaws are both good. Fall planting gives roots time to grow before summer heat.