Community Garden Planting Calendar: Seasonal Guide by Growing Zone

A well-planned community garden planting calendar helps coordinators and members maximize harvests throughout the growing season. By understanding your hardiness zone and following a structured planting schedule, your community garden can produce fresh vegetables and herbs from early spring through late fall.

This guide provides month-by-month planting recommendations for zones 4 through 9, covering most regions across the United States. Whether you're managing plot assignments or planning your own garden space, this calendar will help you time plantings for optimal yields.

Understanding USDA Hardiness Zones

The USDA Plant Hardiness Zone Map divides North America into zones based on average annual minimum winter temperatures. Each zone represents a 10-degree Fahrenheit difference in the coldest temperatures of the year.

To find your hardiness zone, visit the USDA's online Plant Hardiness Zone Map and enter your zip code. Your zone determines your last spring frost date and first fall frost date, which are critical for planning when to start seeds indoors and when to transplant seedlings outdoors.

Key Zones Covered in This Guide

• Zone 4: Last frost mid-May to late May, first frost mid-September
• Zone 5: Last frost late April to early May, first frost early to mid-October
• Zone 6: Last frost mid-April to early May, first frost mid to late October
• Zone 7: Last frost mid-April, first frost early to mid-November
• Zone 8: Last frost late March to early April, first frost mid to late November
• Zone 9: Last frost late February to early March, first frost early December

These dates are averages. Track actual frost dates in your specific location for more accurate planning in future years.

Cool-Season vs. Warm-Season Crops

Understanding the difference between cool-season and warm-season crops is fundamental to successful garden planning.

Cool-season crops tolerate frost and prefer temperatures between 60-70°F. They include:

• Leafy greens: lettuce, spinach, kale, arugula, chard
• Brassicas: broccoli, cabbage, cauliflower, Brussels sprouts
• Root vegetables: carrots, beets, radishes, turnips
• Alliums: onions, leeks, garlic
• Peas and fava beans

Warm-season crops are sensitive to frost and need soil temperatures of at least 60°F to germinate. They prefer air temperatures of 70-85°F and include:

• Tomatoes, peppers, eggplant
• Cucumbers, squash, melons, pumpkins
• Beans (bush and pole varieties)
• Corn
• Sweet potatoes

Spring Planting Schedule

March

Zones 8-9:

• Direct sow cool-season crops: lettuce, spinach, peas, radishes, carrots, beets, turnips
• Transplant broccoli, cabbage, cauliflower seedlings started indoors 6-8 weeks prior
• Plant onion sets and garlic cloves
• Start warm-season crop seeds indoors: tomatoes, peppers, eggplant

Zones 6-7:

• Start cool-season crops indoors: broccoli, cabbage, cauliflower
• Start warm-season crops indoors: tomatoes, peppers, eggplant
• Direct sow peas outdoors if soil is workable

Zones 4-5:

• Plan your garden layout and order seeds
• Start cool-season crops indoors: broccoli, cabbage, cauliflower
• Start warm-season crops indoors: tomatoes, peppers, eggplant (late March)

Coordinator Tasks:

• Send reminder about plot renewal deadlines
• Organize seed swap or bulk seed order
• Schedule spring garden cleanup day
• Review plot assignments and waiting list

April

Zones 8-9:

• Direct sow warm-season crops after last frost: beans, corn, squash, cucumbers
• Transplant tomatoes, peppers, eggplant after hardening off
• Continue succession planting lettuce and other greens every 2 weeks
• Plant herbs: basil, cilantro, dill, parsley

Zones 6-7:

• Direct sow cool-season crops: lettuce, spinach, peas, radishes, carrots, beets
• Transplant broccoli, cabbage, cauliflower seedlings
• Start cucumbers, squash, and melon seeds indoors
• Continue starting herbs indoors

Zones 4-5:

• Direct sow peas, spinach, lettuce, radishes as soon as soil is workable
• Start cucumbers, squash, and melon seeds indoors (late April)
• Harden off broccoli and cabbage transplants for early May planting

Coordinator Tasks:

• Host spring orientation meeting for new members
• Distribute compost or arrange delivery
• Check irrigation system and schedule repairs
• Share planting calendar and frost date information

May

Zones 8-9:

• Focus on succession planting and maintenance
• Plant heat-tolerant lettuce varieties for extended spring harvest
• Direct sow okra, sweet potatoes, and southern peas
• Monitor for early pest pressure

Zones 6-7:

• Transplant tomatoes, peppers, eggplant after last frost
• Direct sow beans, corn, squash, cucumbers, melons
• Plant herb transplants or sow directly
• Continue succession planting lettuce, carrots, and beets

Zones 4-5:

• Transplant cool-season crops: broccoli, cabbage, cauliflower
• Direct sow lettuce, spinach, carrots, beets, radishes
• Transplant tomatoes, peppers, eggplant after last frost (late May)
• Direct sow beans, corn (late May)

Coordinator Tasks:

• Organize mulch delivery or wood chip drop-off
• Schedule watering assignments or demonstrate irrigation system
• Plan educational workshop on pest management
• Check that all members have accessed their plots

Summer Planting Schedule

June

Zones 8-9:

• Plant fall crop seedlings: start broccoli, cabbage, cauliflower indoors for fall harvest
• Direct sow summer squash every 2-3 weeks for continuous harvest
• Plant sweet potato slips
• Harvest cool-season crops before heat causes bolting

Zones 6-7:

• Direct sow beans every 2 weeks for succession harvest
• Plant remaining warm-season crops early in month
• Start fall brassicas indoors (late June)
• Direct sow summer lettuce in partial shade or use shade cloth

Zones 4-5:

• Direct sow cucumbers, squash, melons early in month
• Plant remaining bean and corn succession plantings
• Start fall brassicas indoors (late June)
• Succession plant lettuce, carrots, beets

Coordinator Tasks:

• Monitor water usage and address drought concerns
• Organize mid-season potluck or garden tour
• Share succession planting reminders
• Address any plot abandonment issues

July

Zones 8-9:

• Focus on maintenance and harvesting
• Direct sow fall crops: beets, carrots, turnips (late July)
• Plant fall lettuce in shade or wait for August
• Start fall tomato transplants indoors for September planting (warm-zone strategy)

Zones 6-7:

• Direct sow fall carrots, beets, and turnips
• Transplant fall brassicas to garden (late July)
• Plant succession lettuce in partial shade
• Continue bean succession plantings (early July)

Zones 4-5:

• Direct sow fall crops: carrots, beets, radishes, turnips
• Transplant fall brassicas to garden
• Plant final succession of quick-maturing varieties
• Begin planning fall and winter crop protection

Coordinator Tasks:

• Share harvesting and food preservation resources
• Coordinate surplus produce donations
• Plan fall cover crop seed order
• Schedule summer maintenance work parties

August

Zones 8-9:

• Direct sow fall greens: lettuce, spinach, arugula, Asian greens
• Plant fall brassica transplants: broccoli, cabbage, cauliflower
• Direct sow radishes, turnips, beets
• Plant fall herb transplants: cilantro, parsley

Zones 6-7:

• Direct sow fall lettuce, spinach, arugula, Asian greens
• Plant garlic cloves for next year's harvest (late August in some areas)
• Direct sow quick-maturing radishes
• Focus on succession planting fast-maturing crops

Zones 4-5:

• Direct sow only fastest-maturing varieties: radishes, lettuce, arugula
• Plant garlic cloves for next year's harvest (late August)
• Focus on caring for existing crops
• Begin planning season extension strategies

Coordinator Tasks:

• Send reminders about fall planting opportunities
• Organize seed saving workshop
• Plan fall harvest celebration
• Discuss plot cleanup expectations

Fall Planting Schedule

September

Zones 8-9:

• Continue planting fall greens and lettuce
• Direct sow carrots, beets, turnips, radishes
• Plant fall peas (zone 9)
• Plant cover crops in empty beds

Zones 6-7:

• Plant garlic cloves for next year's harvest
• Direct sow spinach, lettuce, arugula for fall harvest
• Plant cover crops in finished beds
• Mulch fall crops for protection

Zones 4-5:

• Plant garlic cloves for next year's harvest
• Focus on harvesting and preserving
• Plant cover crops as beds finish
• Install row covers or cold frames for season extension

Coordinator Tasks:

• Share fall cleanup guidelines and deadlines
• Coordinate cover crop planting in common areas
• Plan end-of-season plot inspection
• Collect feedback surveys from members

October

Zones 8-9:

• Continue succession planting lettuce, spinach, and greens
• Plant onion sets and transplants for spring harvest
• Direct sow fava beans (zones 8-9 can overwinter legumes)
• Plant strawberry crowns

Zones 6-7:

• Direct sow spinach, lettuce, and arugula under row covers
• Plant spring bulbs in flower areas
• Mulch fall crops heavily
• Complete cover crop planting

Zones 4-5:

• Harvest remaining warm-season crops before hard frost
• Protect fall greens with row covers or cold frames
• Complete cover crop planting
• Prepare garden for winter

Coordinator Tasks:

• Send final cleanup reminder before deadline
• Inspect plots and document conditions
• Organize tool cleaning and storage
• Plan winter member meetings or newsletter

November

Zones 8-9:

• Continue harvesting and planting cool-season crops
• Direct sow peas for winter harvest
• Maintain fall plantings with consistent watering
• Plant lettuce transplants in protected areas

Zones 6-7:

• Harvest remaining crops
• Mulch garlic beds heavily
• Protect overwintering crops with row covers
• Complete final garden cleanup

Zones 4-5:

• Harvest final crops before hard freeze
• Mulch garlic and perennial beds
• Store tools and equipment for winter
• Drain irrigation systems

Coordinator Tasks:

• Send season wrap-up communication
• Process plot renewals for next season
• Review year's successes and challenges
• Begin planning next year's improvements

Succession Planting for Continuous Harvest

Succession planting ensures your community garden produces fresh vegetables throughout the growing season rather than overwhelming members with one large harvest. This strategy is particularly important for crops that mature quickly or have short harvest windows.

Best Crops for Succession Planting

| Crop | Planting Interval | Season | |------|------------------|---------| | Lettuce | Every 2 weeks | Spring through fall | | Radishes | Every 1-2 weeks | Spring and fall | | Beans | Every 2-3 weeks | After frost through mid-summer | | Carrots | Every 3 weeks | Spring and fall | | Beets | Every 3 weeks | Spring and fall | | Spinach | Every 2-3 weeks | Spring and fall | | Arugula | Every 2 weeks | Spring through fall | | Cilantro | Every 2-3 weeks | Spring and fall |

Planning Succession Plantings

Divide your growing space for each succession crop. For example, if you dedicate 12 feet of row to lettuce, plant 3 feet every 2 weeks rather than planting all 12 feet at once. This provides four plantings spread over 6 weeks, resulting in harvests from roughly 6 weeks after the first planting through 12 weeks.

Track planting dates to maintain your schedule. Many community gardeners find that using a garden management tool like Plot & Grow helps coordinate succession plantings across their plot throughout the season.

For community gardens, encourage members to coordinate succession plantings. If several members each plant beans at different times, the entire garden community benefits from shared knowledge about pest pressure, weather impacts, and harvest timing.

Season Extension Techniques

Extending the growing season allows community gardens to produce fresh food earlier in spring and later into fall or even winter in moderate climates.

Row Covers

Floating row covers are lightweight fabrics that protect crops from frost while allowing light and water to penetrate. They can extend the season by 2-4 weeks in both spring and fall.

Best uses:

• Protecting transplants from late spring frosts
• Extending fall harvest of greens, carrots, and brassicas
• Protecting crops from insect pests
• Providing windbreak for young plants

Apply row covers loosely over crops, anchoring edges with soil, boards, or landscape staples. Remove covers when temperatures rise above 70°F or when plants need pollinator access.

Cold Frames

Cold frames are bottomless boxes with transparent tops that create a greenhouse effect. They protect plants from frost and cold winds while warming soil and air.

Construction tips:

• Build with untreated wood or salvaged materials
• Use old windows, polycarbonate panels, or greenhouse plastic for tops
• Angle tops to face south for maximum sun exposure
• Include hinges for easy ventilation

Best uses:

• Starting cool-season transplants 4-6 weeks earlier than outdoor planting
• Overwintering hardy greens in zones 6 and warmer
• Hardening off seedlings started indoors
• Extending fall harvest of lettuce, spinach, and Asian greens

Vent cold frames when internal temperatures exceed 60°F to prevent overheating. Even in winter, sunny days can create excessive heat inside closed cold frames.

Low Tunnels

Low tunnels consist of hoops supporting plastic or row cover fabric over garden beds. They offer more height than row covers alone and better protection than simple floating covers.

Construction:

• Use PVC pipe, wire hoops, or flexible metal conduit
• Cover with 4-6 mil greenhouse plastic or heavy row cover
• Secure ends and edges to prevent wind damage
• Include ventilation options for temperature control

Low tunnels can extend the season by 4-6 weeks and enable winter growing of hardy crops in zones 7 and warmer.

Season Extension by Zone

| Zone | Spring Extension | Fall Extension | Winter Growing | |------|-----------------|----------------|----------------| | 4-5 | 2-4 weeks with row covers | 3-6 weeks with row covers | Not practical | | 6-7 | 3-6 weeks with cold frames | 6-8 weeks with cold frames | Hardy greens in cold frames | | 8-9 | 4-8 weeks with minimal protection | 8-12 weeks with minimal protection | Most crops with row covers |

Monthly Coordinator Tasks

Beyond planting schedules, community garden coordinators have administrative and community-building responsibilities throughout the year.

Spring (March-May)

Administrative:

• Process plot renewal payments and new member applications
• Distribute plot assignments and garden keys/access codes
• Update member contact list and emergency information
• Review and update garden rules if needed

Garden preparation:

• Schedule spring cleanup work party
• Arrange compost, mulch, or soil amendments delivery
• Check and repair irrigation system
• Inspect fencing, gates, and shed security

Communication:

• Send welcome packet to new members with planting calendar
• Share frost date information and planting recommendations
• Announce workshop schedule and volunteer opportunities
• Remind members about succession planting strategies

Summer (June-August)

Maintenance:

• Monitor water usage and address drought concerns
• Schedule regular mowing of pathways
• Address pest and disease issues affecting multiple plots
• Manage tool sharing and equipment maintenance

Community building:

• Organize mid-season potluck or garden tour
• Host skill-sharing workshops
• Coordinate surplus produce donations
• Recognize volunteer contributions

Communication:

• Send regular watering reminders during heat waves
• Share harvest and preservation tips
• Address any conflict or plot abandonment issues
• Remind members about fall planting opportunities

Fall (September-November)

Harvest season:

• Plan harvest celebration or garden-to-table event
• Coordinate bulk food preservation activities
• Organize seed saving workshop
• Facilitate produce donations or food bank contributions

Season wrap-up:

• Send cleanup guidelines and deadlines
• Conduct end-of-season plot inspections
• Organize cover crop planting in common areas
• Collect feedback surveys from members

Planning ahead:

• Process next year's plot renewals
• Manage waiting list and new member recruitment
• Plan winter meetings or social events
• Begin budgeting for next season

Winter (December-February)

Administrative:

• Review previous season's budget and expenses
• Plan fundraising or grant applications if needed
• Confirm insurance coverage for next season
• Update bylaws or policies based on member feedback

Planning:

• Organize seed and supply bulk orders
• Plan educational programming for next season
• Schedule major projects or garden improvements
• Recruit volunteers for coordinator and committee roles

Communication:

• Send winter newsletter with renewal information
• Announce seed swap date or bulk order deadlines
• Share gardening resources and winter reading
• Build excitement for upcoming season

Creating Your Community Garden Planting Calendar

Every community garden has unique characteristics based on location, member preferences, and local growing conditions. Use this guide as a starting point, then adapt it to your specific situation.

Tracking Local Conditions

Record actual frost dates each year to refine your planting calendar. Note which crops perform well in your garden and which struggle. Document pest and disease pressure by month to anticipate challenges.

Encourage members to share their observations. Experienced gardeners often have valuable insights about microclimates within the garden or varieties that perform exceptionally well in your area.

Zone-Specific Considerations

Zones 4-5: Focus on cold-hardy varieties and season extension. Maximize production during the short growing season with quick-maturing varieties and succession plantings. Consider starting more transplants indoors to gain weeks of growing time.

Zones 6-7: Take advantage of moderate seasons for both cool and warm crops. Spring and fall are long enough for multiple succession plantings. Experiment with season extension for year-round harvests of hardy greens.

Zones 8-9: Manage heat stress during summer by providing shade for cool-season crops. Take advantage of mild winters for continuous production. Focus on fall and winter gardening as prime growing seasons.

Adjusting for Microclimates

Individual plots within a community garden may have different microclimates based on sun exposure, drainage, and wind protection. South-facing plots warm earlier in spring. Plots near buildings or fences may be protected from frost. Low-lying areas may experience frost later in spring and earlier in fall.

Encourage members to observe their specific plot conditions and adjust planting times accordingly. A plot that receives afternoon shade may be ideal for extending the lettuce season, while a hot, sunny plot excels for tomatoes and peppers.

Accommodating Member Preferences

Survey members about their crop preferences before organizing bulk seed orders or planning common area plantings. Some members may focus on tomatoes and peppers, while others prefer salad greens or root vegetables.

Consider designating areas of the garden for specific purposes: a cutting flower area, a perennial herb section, or a trial area for unusual crops. This allows members to experiment while maintaining productive plots.

Planting Calendar Best Practices

Start small: New gardeners should focus on a few reliable crops rather than attempting everything at once. Success with lettuce, radishes, beans, and tomatoes builds confidence for tackling more challenging crops.

Read seed packets: Planting depth, spacing, and days to maturity vary by variety. Seed packets provide specific guidance for each crop. Days to maturity help you calculate harvest dates and plan succession plantings.

Test soil temperature: Use a soil thermometer to confirm soil has warmed sufficiently for warm-season crops. Planting tomatoes or beans in cold soil leads to rot, disease, and poor germination.

Harden off transplants: Seedlings started indoors need gradual exposure to outdoor conditions before transplanting. Place seedlings outdoors in shade for a few hours, gradually increasing exposure over 7-10 days.

Keep records: Note what you plant and when. Track harvest dates, yields, and any problems. Review records during winter planning to improve next year's calendar.

Adapt and experiment: Every growing season brings different weather patterns. What works one year may need adjustment the next. Be willing to try new varieties, planting dates, or techniques.

Conclusion

A well-planned community garden planting calendar maximizes harvests, reduces waste, and helps members work together toward common goals. By understanding your hardiness zone, distinguishing between cool and warm-season crops, and implementing succession planting, your community garden can produce fresh food throughout the growing season.

Start with this general framework, then refine your calendar based on local conditions and member experiences. Share knowledge within your garden community, track what works, and adjust your approach each year. With thoughtful planning and consistent effort, your community garden will become a more productive and enjoyable space for everyone involved.