Seasonal Garden Calendar by USDA Hardiness Zone Group

How to use this calendar

Gardening calendars work best as a rhythm rather than a strict schedule. Every garden has its own microclimate, and weather varies year to year, so treat the guidance below as a framework to adapt. The most reliable anchors are your local average last spring frost and first fall frost dates, which your state cooperative extension office can provide for your area. Many tasks are timed in relation to those dates, such as planting tender vegetables after the last frost or finishing fall planting several weeks before the ground freezes.

The USDA Plant Hardiness Zone Map divides North America into zones based on the average annual extreme minimum winter temperature, in bands of ten degrees Fahrenheit, with half-zone steps of five degrees. A higher zone number means milder winters. The zone tells you which perennial plants can survive your winter. It does not tell you about summer heat, rainfall or frost timing, which also shape what grows well.

We group zones into four bands for convenience: zones 3 and 4, zones 5 and 6, zones 7 and 8, and zones 9 through 11. Find your own zone by entering your ZIP code on the official USDA map, then use the matching section below. If you live near the edge of a band, read both.

Zones 3 and 4: short seasons and cold winters

Gardeners in zones 3 and 4 experience very cold winters and a compact growing season. Winter is a time for planning, ordering seed, and cleaning and sharpening tools. Heavy snow can damage evergreens and shrubs, so knocking snow gently off branches can help, as long as it is not frozen on.

Early spring is for cleanup once the soil thaws and is no longer soggy. Avoid working wet soil. Prune dormant trees and shrubs, other than those that bloom in spring. Start tender vegetable seeds indoors, since the outdoor season is short. In late spring, after the last frost date, harden off seedlings and plant tender crops. Cold-hardy crops such as peas, spinach and lettuce can go in earlier.

Summer is for watering, weeding and mulching, and for enjoying fast growth under long days. Plan for deep watering during dry spells. Fall is the time to plant spring bulbs, divide perennials, and finish any planting early enough for roots to establish. Mulch tender perennials after the ground begins to freeze to keep it frozen rather than swinging between freeze and thaw. Protect young trees from rodents and winter sun scald with guards, and drain and winterize irrigation systems before hard freezes.

Zones 5 and 6: four distinct seasons

In zones 5 and 6, winters are cold but the growing season is longer and more flexible. Late winter is a good time for dormant pruning of many trees and shrubs, and for seed starting indoors. As the soil thaws, cleanup begins, but avoid working saturated soil.

Early spring suits cool-season vegetables, such as peas, lettuce, spinach and radishes, and for cool-season lawns, spring is a time for light feeding and weed prevention timed to local conditions. After the last frost date, set out tomatoes, peppers and other tender crops. Many gardeners in these zones plant annuals around mid-spring through early summer.

Summer care focuses on watering deeply, mulching, staking, deadheading and pest monitoring. Fall is the high season for lawn work for cool-season grass: aeration, overseeding and feeding are commonly recommended in early fall. It is also a good time to plant trees, shrubs and perennials, and to plant spring bulbs. Rake or mulch leaves, cut back perennials as you prefer, and mulch tender plants once the ground cools. Drain irrigation lines before the first hard freeze.

Zones 7 and 8: long seasons with mild winters

Zones 7 and 8 enjoy long growing seasons and relatively mild winters, with occasional cold snaps. The gardening year stretches in both directions. Winter is often an active time: planting of trees and shrubs, dormant pruning, and cool-season vegetables in protected spots.

Early spring brings a rush of activity: cleanup, pruning of summer bloomers, planting of cool-season crops, and the start of warm-season seed starting. After the last frost, which comes earlier than farther north, warm-season crops and annuals go in. Watch for late frosts, which can still occur after a warm spell.

Summer can be hot and humid, which makes watering, mulching and disease monitoring important. Warm-season lawns such as Bermuda and zoysia are fed and aerated in late spring and early summer. In transition-zone areas, cool-season lawns need extra care in summer heat. Fall is an excellent planting season: roots grow in warm soil while air cools. Overseed cool-season lawns, plant trees, shrubs and perennials, and set out fall vegetables. Leaves need regular attention, and a light frost can arrive later than northern regions.

Zones 9 through 11: warm winters and heat to manage

In zones 9 through 11, winters are mild, and frost is rare or absent in the warmest areas. Gardening follows heat and water rather than cold. In many places the main vegetable season is cool-season winter through spring, and midsummer is too hot for many crops.

Winter and early spring are good for planting trees, shrubs and cool-season vegetables, and for pruning many plants. Spring is when warm-season lawns come out of semi-dormancy and benefit from feeding and aeration. Summer demands careful water management. Deep, infrequent irrigation, mulch, shade for tender plants and attention to local watering restrictions matter. Avoid fertilizing in extreme heat, and monitor for pests that stay active without a cold season to slow them.

Fall is a second planting window: warm soil encourages root growth, and temperatures moderate. In some warm regions, tropical plants may still need protection during an occasional cold event, even in these zones. Because rainfall patterns vary widely, from desert to subtropical humid, check local extension guidance for timing, plant lists and restrictions that apply to your area.

Beyond zones: microclimates and local advice

A zone is a starting point. Microclimates can shift conditions by a half-zone or more within a single yard. A south-facing wall, a paved area that holds heat, a low spot where cold air pools, or a windy ridge each change what grows well. Keep notes on when your garden first and last frosts, when plants bloom and what struggles. Over a few seasons, you will build your own calendar that is more accurate than any general one.

For anything specific to your area, rely on your state cooperative extension office, which publishes region-based planting charts, pest alerts and lawn advice. A local gardener with experience in your neighborhood is also an excellent resource, and a good one will adapt tasks to this year's weather instead of following the calendar rigidly.

Frequently asked questions