What to Plant in June: Succession Planting and Fall Garden Starts

June is the month when most people think the planting window is closed. It’s not — it’s just shifted. In cold zones, June is actually prime tomato-transplant month. In warm zones, June is when succession planting and fall-crop starts become the focus. What you shouldn’t do in June is nothing.

Here’s what to plant in June, organized by zone.

Zones 3-4: The Real Planting Month

Last frost: May 15 – June 1

For gardeners in zones 3-4, June is when the actual outdoor growing season starts. Tomatoes and peppers planted before June often sulk in cold soil; those planted in warm June soil catch up within weeks.

Transplant outdoors:

• Tomatoes, peppers, eggplant — now that soil is reliably 60°F+
• Basil, tender herbs
• Squash, cucumbers, pumpkins (transplants for faster start)

Direct sow:

• Beans (bush and pole), corn, squash, cucumbers, melons
• Carrots, beets, lettuce, radishes (succession)
• Sunflowers, zinnias, nasturtiums

Short-season strategy: Pick varieties rated at 60-70 days to maturity. You do not have time for a 90-day tomato in zone 3.

Pro tip: Use black plastic or landscape fabric over warm-season crops to boost soil temperature 5-10°F. In short-season zones that’s often the difference between getting ripe tomatoes and not.

Zones 5-6: Succession and Heat Prep

Last frost: April 15 – May 15

June in zones 5-6 is when early plantings are thriving and it’s time to think about the next wave. The garden is at its best-looking, and it’s easy to coast — don’t.

Succession sow:

• Bush beans every 2-3 weeks through July
• Carrots, beets, lettuce (if you have a cool spot)
• Cilantro, dill (bolt-resistant varieties only now)

Direct sow mid-June:

• Sweet corn (second planting for August harvest)
• Cucumbers, summer squash (to replace slowing early plants)
• Okra, southern peas (warmer parts of zone 6)

Start indoors for fall:

• Broccoli, cauliflower, cabbage (for August transplant)
• Kale, collards, Brussels sprouts

Weed and mulch: June heat triggers an explosion of weeds. Two hours of weeding and mulching in June saves ten hours in July.

Pro tip: If your lettuce is bolting, pull it. Don’t wait — bolting lettuce attracts aphids and shades the rest of the bed. Replace with heat-tolerant options: Malabar spinach, amaranth, New Zealand spinach.

Zone 7: Fall Garden Planning Begins

Last frost: March 15

By June, zone 7 is fully in summer mode. Focus shifts from spring planting to succession, fall crop starts, and pest management.

Direct sow:

• Okra, southern peas, sweet potatoes
• Second plantings of cucumbers, summer squash, bush beans
• Heat-tolerant greens: Malabar spinach, amaranth

Start indoors for fall:

• Tomatoes — yes, again. Fall tomato transplants go in by August for October harvests
• Broccoli, cauliflower, cabbage (for August transplant)

Harvest and pull:

• Garlic and onions are ready — check tops
• Spring peas and lettuce are done

Pest watch:

• Squash vine borer adults are laying eggs now — wrap stems with foil or spray with spinosad
• Japanese beetles are peaking — hand-pick in the early morning

Pro tip: Water deeply twice a week instead of shallowly every day. Deep roots handle July’s heat far better than surface roots.

Zones 8-9: Fall Starts and Heat Survival

Last frost: Feb 15 – March 1

June in zones 8-9 is about survival gardening. Most spring plantings are winding down and the question becomes what to plant next and how to keep anything alive through July and August.

Plant now:

• Sweet potatoes (still time for a good crop)
• Okra, southern peas, lima beans — these thrive in the heat
• Heat-tolerant herbs: basil, Mexican oregano, lemongrass

Start indoors:

• Fall tomato transplants (cherry and Roma types tolerate heat better)
• Fall peppers and eggplant

Give up on:

• Anything in the lettuce/spinach/pea family — it’s over until September
• Cool-season brassicas until fall

Heat management:

• Shade cloth (30-40%) over peppers, lettuce, and transplants
• Deep mulch — 4 inches of wood chips or straw
• Early-morning watering only

Pro tip: Fall garden planning starts now in zones 8-9. Your September garden needs seeds started in June. Make a list of fall crops and work backward from your average first frost.

Zone 10: Wet Season Planting

Last frost: rarely freezes

In zone 10, June often brings rainy season. Planting strategy shifts to crops that can handle both heat and humidity.

Plant now:

• Sweet potatoes, yard-long beans, southern peas
• Chayote, calabaza, luffa
• Tropical herbs: ginger, turmeric, lemongrass
• Tropical fruits from grafted starts: lychee, longan, starfruit

Pest watch:

• Humid weather means fungal disease — air circulation matters more than water
• Nematodes in sandy Florida soil — solarize fallow beds for 4-6 weeks

Prep for hurricane season:

• Secure trellises, stake trees
• Clear loose debris
• Know your evacuation plan if you live in a coastal zone

Pro tip: In zone 10 summer, raised beds drain better than in-ground beds during heavy rain. Root rot is a bigger killer than heat for tomatoes and peppers.

June Planting Checklist

Universal June tasks for any zone:

1. Mulch everything — 3-4 inches minimum. This single task reduces watering by 40-50%
2. Side-dress heavy feeders — tomatoes, peppers, corn, and squash want a nitrogen boost now
3. Stake and tie — tomatoes especially outgrow cages fast in June; get them supported before they fall over
4. Plan fall crops — draw out what goes where when summer crops come out
5. Log everything — June is when the season’s data starts getting interesting; skip logging now and you’ll forget which variety was actually worth keeping

Track Your June Planting

Record what goes in the ground, track it through the season, and learn what actually works in your soil and climate.

Check your zone’s detailed planting schedule:

• Zone 5 Planting Calendar — Chicago, Columbus, Boston
• Zone 6 Planting Calendar — Philadelphia, Nashville, Portland
• Zone 7 Planting Calendar — Charlotte, Atlanta, Dallas
• Zone 8 Planting Calendar — Austin, New Orleans, Sacramento

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