Planting calendar
August Planting Guide for Chicago Gardens: Raised Beds, Containers & In-Ground
In August, Chicago gardeners can focus on planting cool-season crops for a fall harvest in raised beds, containers, and in-ground gardens. This is the ideal time to sow leafy greens, root vegetables, and herbs that tolerate cooler temperatures. Avoid warm-season crops that struggle with decreasing daylight and cooler nights.
Plant now (quick list)
Spinach, Lettuce, Kale, Radishes, Carrots, Beets, Swiss chard, Turnips
Plant now
- Spinach
- Lettuce
- Kale
- Radishes
- Carrots
- Beets
- Swiss chard
- Turnips
Start indoors
- Broccoli
- Cauliflower
- Cabbage
- Brussels sprouts
- Kohlrabi
- Collard greens
- Herbs like parsley and cilantro
Avoid
- Tomatoes
- Peppers
- Eggplants
- Corn
- Beans
- Squash
- Melons
- Cucumbers
Next 2 weeks
- Continue sowing quick-maturing leafy greens
- Thin seedlings to prevent overcrowding
- Mulch to retain soil moisture and regulate temperature
- Water early in the day to reduce fungal risks
- Prepare soil for fall brassicas by adding compost
- Monitor for pests like aphids and flea beetles
- Start hardening off indoor seedlings for transplant
- Remove spent warm-season crops to free space
FAQs
Can I plant tomatoes in August in Chicago?
It's best to avoid planting tomatoes in August as they require longer warm growing periods and may not mature before the first frost.
How do I protect fall crops from early frosts?
Use row covers or cold frames to shield young plants from frost and extend the growing season.
Are containers suitable for fall vegetables?
Yes, containers can be used for cool-season crops like leafy greens and herbs, but ensure consistent watering and adequate drainage.
When should I start broccoli indoors for fall planting?
Start broccoli seeds indoors in mid to late August to transplant outdoors in early September.
How often should I water raised beds in August?
Water raised beds deeply about 2-3 times per week, adjusting based on rainfall and temperature to keep soil moist but not soggy.
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