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August Planting Guide for Chicago Gardens: Raised Beds, Containers & In-Ground

In August, Chicago gardeners can focus on planting cool-season crops and preparing for fall harvests. This month is ideal for sowing leafy greens and root vegetables in raised beds, containers, or directly in the ground. Start some fall crops indoors to extend your growing season.

Plant now (quick list)
Spinach, Radishes, Lettuce, Kale, Beets, Carrots, Turnips, Swiss chard
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Chicago, IL planting calendar hero image
Plant now
  • Spinach
  • Radishes
  • Lettuce
  • Kale
  • Beets
  • Carrots
  • Turnips
  • Swiss chard
Start indoors
  • Broccoli
  • Cauliflower
  • Cabbage
  • Brussels sprouts
  • Kohlrabi
Avoid
  • Tomatoes
  • Peppers
  • Eggplants
  • Corn
  • Beans
Next 2 weeks
  • Plant spinach and lettuce seeds directly in raised beds or containers
  • Transplant indoor-started broccoli seedlings to the garden
  • Mulch around root vegetables to retain moisture
  • Water consistently to support new seedlings
  • Monitor for pests like aphids and treat early

FAQs

Can I plant warm-season vegetables in August in Chicago?
August is generally too late for warm-season crops like tomatoes and peppers as they need more time to mature before frost.
How do I protect fall crops from early frosts?
Use row covers or cold frames to shield tender plants when temperatures start to drop.
Is it better to plant leafy greens in raised beds or containers?
Both work well; raised beds offer better drainage and soil control, while containers provide flexibility and mobility.
How often should I water new fall seedlings?
Keep soil consistently moist but not waterlogged, watering deeply about 2-3 times per week depending on weather.
Can I start broccoli indoors in containers in August?
Yes, starting broccoli indoors in August gives seedlings a head start for transplanting outdoors in early fall.

Next steps

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