Mid-Summer Planting Strategies for Illinois Landscapes

July in Illinois is synonymous with heat, humidity, and occasional dry spells. For many landscaping professionals, it might seem like a time to pause installations. However, savvy landscapers and wholesale nurseries understand that mid summer can still be a productive planting period if approached with the right strategies.

Why Summer Planting Still Makes Sense

While spring and fall are ideal, summer is far from a dead zone. For ongoing projects with active timelines, waiting until fall isn’t always an option. Installing during July allows trees and shrubs to establish roots before winter dormancy, giving them a head start come spring.

Did You Know?

Many native and hardy ornamental plants have evolved to handle mid-summer conditions especially with proper soil prep and hydration.

Top Plants for July Installation in Illinois

• Trees: Kentucky Coffeetree, Hackberry, Swamp White Oak
• Shrubs: Ninebark, Viburnum, Buttonbush
• Evergreens: Arborvitae, Juniper, and Picea species known for heat tolerance

Choose field-grown, well-hydrated specimens. Container-grown stock may be easier to transplant but monitor for root binding.

Nursery Prep Tips
Before delivery or pickup:

• Water root balls thoroughly.
• Shade vulnerable stock to prevent foliage burn.
• Group plants by species to streamline loading and unloading.

Watering Protocols for Success

• Drip irrigation provides deep, targeted watering without waste.
• Water every other day for the first two weeks, then reduce frequency.
• Watch for signs of heat stress: leaf curl, browning edges, or premature leaf drop.

Planning Ahead: Fall Prep Starts Now
Wholesale nurseries should encourage clients to:

• Reserve fall inventory in July.
• Order specialty or large caliper trees in advance.
• Consider fall installations for slower-growing varieties.

Installation Techniques for Summer Survival

• Plant during cooler hours early morning or evening.
• Use root stimulators and mycorrhizal fungi to encourage quick adaptation.
• Apply 2–3″ of organic mulch but avoid direct contact with trunks.
• Temporary shade cloths can help in exposed urban or commercial sites.