When to Plant Fall Vegetables by Zone: The 2026 Timing Guide

Updated August 18, 2026 · The Dig Report

Fall garden planting is one of the areas where gardening advice on the internet is mostly wrong. Generic "plant in August" advice ignores that August in Vermont is a different planting window than August in Georgia. The right approach is calculated from your specific first frost date, backing out the days each crop needs to mature plus a "fall factor" that accounts for shortening days and slower growth.

This guide walks the math, then gives specific planting windows for each USDA Plant Hardiness Zone. Print it, save it, or bookmark it — this is a reference you'll consult every August for years.

Step 1 — find your first frost date

Your average first frost date is the median date each year when overnight temperatures reach 32°F. Sources for accurate local data:

• NOAA / National Weather Service — most accurate, based on your nearest weather station's historical records.
• Farmer's Almanac Growing Calendar — usable but based on regional averages, not your specific microclimate.
• USDA Plant Hardiness Zone Map — gives you your zone but not specific frost date.
• Local Cooperative Extension office — often has hyper-local data that beats generic maps for your specific area.

Note that your actual first frost varies year to year (10-14 day range in most places). Use the average as your default; adjust in real time as weather forecasts develop in fall.

Step 2 — understand the "fall factor"

Crops grow faster in spring (increasing day length, warming soil, warming air) than in fall (decreasing day length, cooling temperatures). The same crop that matures in 50 days from May 1 might take 60-70 days from August 1 to reach the same size.

The 14-day fall factor is a general adjustment. Some crops need more (brassicas, carrots) and some less (radishes, arugula). Details for specific crops are in the zone tables below.

Zone-by-zone planting calendar

Zone 3 (first frost approximately September 1-15)

The shortest and most challenging fall garden window. Focus on cold-hardy crops that establish quickly and tolerate frost:

• Direct-seed by July 15-25: radishes, spinach, arugula, lettuce (fast varieties), turnips, hakurei-type baby turnips.
• Transplant by July 25-August 5: kale, collards, chard (pre-started transplants), Asian greens.
• Plant by August 15 for garlic (fall-planted, next-summer harvest): hardneck garlic varieties for cold-hardiness.
• Don't attempt: broccoli, cauliflower (unless started very early), most brassicas needing 70+ days.

Zone 4 (first frost approximately September 15-30)

Slightly wider window than zone 3 but still constrained:

• Direct-seed by August 1-10: radishes, spinach, arugula, cilantro, lettuce, turnips, mustard greens.
• Transplant by August 5-15: kale, collards, chard, broccoli raab, Asian greens.
• Plant by September 1-15: garlic (hardneck).
• Attempt with row covers for extension: baby carrots, small kohlrabi, quick-maturing broccoli.

Zone 5 (first frost approximately October 1-15)

Textbook fall gardening zone. Wide planting window and many options:

• Direct-seed by August 10-25: radishes, spinach, arugula, lettuce (multiple varieties), turnips, beets, cilantro, mustard greens, hakurei turnips, carrots (baby varieties).
• Transplant by August 15-September 1: kale, collards, chard, broccoli, cauliflower (small heads), kohlrabi, cabbage (small heads).
• Direct-seed by September 1-10: mâche (corn salad), winter spinach varieties for spring harvest.
• Plant by October 1-15: garlic (both hardneck and softneck).

Zone 6 (first frost approximately October 15-31)

Prime fall gardening zone. Broadest planting window and most crop options:

• Direct-seed by August 15-September 5: radishes, spinach, arugula, lettuce, turnips, beets, cilantro, carrots (baby and short varieties), mustard greens, Asian greens, kale, chard.
• Transplant by September 1-15: broccoli, cauliflower, cabbage, kohlrabi (full-size).
• Direct-seed by September 15-October 1: mâche, winter spinach, overwintering onions and shallots.
• Plant by October 15-November 1: garlic (all varieties).

Zone 7 (first frost approximately November 1-15)

Very productive fall zone with room for larger and slower-maturing crops:

• Direct-seed by August 25-September 15: lettuce, spinach, arugula, radishes, turnips, beets, chard, kale, carrots (full-size varieties), Asian greens.
• Transplant by September 10-30: broccoli, cauliflower, cabbage, Brussels sprouts, larger brassica varieties.
• Direct-seed by October 1-15: mâche, winter salad greens, overwintering peas (English or snap for early-spring harvest).
• Plant by October 30-November 15: garlic.

Zone 8 (first frost approximately November 15-30)

Extended fall growing with room for many warm-season crops to keep producing plus full cool-season plantings:

• Direct-seed through September 20: full range of leafy greens, root vegetables, brassicas (broccoli, cauliflower, cabbage, kohlrabi).
• Plant fall tomato varieties (heat-tolerant determinates) if first-frost stays late — some seasons allow late fall tomatoes.
• Direct-seed by October 15: spinach, hardy lettuce, arugula for winter salad greens.
• Plant by November 15-30: garlic, shallots.

Zone 9-10 (rarely or never frosts)

Your "fall garden" is your primary garden — cooler months are when many crops that struggle in your summer heat finally produce:

• Plant broadly through October: full range of cool-season crops including lettuce, spinach, broccoli, cauliflower, cabbage, carrots, beets, and most anything that's difficult in summer heat.
• Plant fall tomatoes and peppers if summer was too hot for good production — often produces better than spring plantings.
• Direct-seed through December: hardy greens continue growing through mild winter.
• Plant by December-January: garlic in zone 9, later in zone 10.

Seeds and transplants — where to source

Most garden centers stock spring transplants and are essentially empty by mid- summer. For fall gardening, seed catalogs and mail-order sources become essential. Reliable sources:

• Johnny's Selected Seeds — market-grower quality; broad fall crop selection.
• High Mowing Seeds — organic, cold-hardy varieties.
• Territorial Seed Company — Pacific Northwest specialists; strong fall/winter variety selection.
• Southern Exposure Seed Exchange — southeast US specialty; heat-tolerant fall varieties.
• Fedco Seeds — cold-climate specialist; cheap seed for large gardens.

Specific varieties worth planting for fall

Lettuce (cold-hardy):

Winter Density, Rouge d'Hiver, North Pole, Winter Marvel — bred for cold tolerance, survive light frosts, grow through cool weather when summer lettuces would bolt.

Spinach (winter varieties):

Winter Bloomsdale, Giant Winter, Verdil, Space (F1) — cold-hardy varieties that survive winter under row cover in most zones and produce spring's earliest crop.

Kale:

Winterbor, Red Russian, Lacinato (Tuscan), Redbor — all overwinter in zones 6+ with light protection; flavor improves dramatically after frost.

Carrots (for fall storage):

Bolero, Danvers 126, Napoli — storage-quality carrots that can stay in the ground through fall with mulching, sweetening from cold exposure.

Garlic (hardneck varieties):

Music, German Extra Hardy, Chesnok Red, Purple Glazer — hardneck varieties suit cold-climate planting and produce large bulbs with complex flavor.

Garlic (softneck varieties):

Inchelium Red, California Early, Silver White — softneck varieties store longer (up to 10 months), braid well, and suit warmer climates better than hardneck.

Common fall planting mistakes

• Waiting too late. The single most common mistake — thinking fall planting starts when the weather feels fall-like. By then it's too late. Plant while it still feels like summer.
• Using spring-adapted varieties. Fall-specific varieties are bred for shorter days and cool weather. Regular varieties struggle or fail.
• Under-watering newly-planted fall crops. Warm dry August soil requires steady watering to germinate seeds. Don't let them dry out — you get minimal second chances in fall.
• Skipping the row cover investment. A $30 roll of row cover extends the fall harvest by 4-8 weeks in most zones. Best money-per-day-of-harvest in gardening.
• Planting too much all at once. Successional plantings 10-14 days apart give continuous fall harvest instead of everything ripening simultaneously.