Planting calendar
July Planting Guide for Denver, CO: Raised Beds, Containers & In-Ground
In July, Denver gardeners can focus on heat-tolerant vegetables and herbs in raised beds, containers, and in-ground gardens. This is a good time to plant warm-season crops and start planning for fall harvests by sowing certain seeds indoors.
Plant now (quick list)
Bush beans, Cucumbers, Summer squash, Tomatoes (transplants), Peppers, Basil, Melons, Okra
Plant now
- Bush beans
- Cucumbers
- Summer squash
- Tomatoes (transplants)
- Peppers
- Basil
- Melons
- Okra
Start indoors
- Broccoli
- Cauliflower
- Cabbage
- Kale
- Brussels sprouts
- Lettuce
- Spinach
- Collard greens
Avoid
- Peas
- Potatoes
- Carrots (late July is too hot for direct sowing)
- Radishes (will bolt quickly)
- Cool-season crops that prefer spring planting
Next 2 weeks
- Water deeply in early morning or late evening to reduce evaporation
- Mulch to retain soil moisture and keep roots cool
- Check for pests like aphids and spider mites
- Pinch back herbs to encourage bushier growth
- Harvest regularly to promote continued production
- Shade sensitive plants during extreme heat
- Fertilize tomatoes and peppers every 2-3 weeks
FAQs
Can I plant cool-season crops in July in Denver?
July is generally too hot for direct sowing cool-season crops outdoors, but you can start them indoors to transplant in late summer for a fall harvest.
How often should I water my raised beds in July?
Water deeply 2-3 times per week, adjusting based on rainfall and soil moisture; early morning or late evening watering helps reduce evaporation.
Are containers suitable for growing vegetables in July heat?
Yes, but containers dry out faster, so monitor soil moisture closely and provide shade during peak heat when possible.
What are good herbs to plant in July in Denver?
Basil, oregano, thyme, and rosemary thrive when planted in July and can handle the summer heat well.
When should I start preparing for fall crops?
Start seeds indoors for fall crops like broccoli and cabbage in mid to late July to transplant outdoors by early September.
Next steps
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