July Lawn & Garden To-Do List
By: Julie Day
Rainfall is scarce in July, and soaring temperatures can cause your garden and lawn to slow down and conserve energy. Vegetable gardens kick into high gear and will need some extra attention to stay happy. Other plants in your garden can benefit from special treatment as well. Here are some tips for your lawn and garden during the month of July.
Hydrangeas show off their blooms in midsummer.
Trees and Shrubs
- Prune dead, damaged, or diseased branches to prevent them from falling during summer storms.
- Remove suckers by yanking downward to remove the growth bud.
- Prune spring flowering shrubs early in the month, then leave them alone to set buds for next year. Summer and fall flowering shrubs should not be pruned unless badly overgrown while nonblooming hedges can be trimmed as needed.
- Deadhead roses and other flowering shrubs so they will continue blooming.
- Plants suffering from iron deficiency will benefit from an application of chelated iron.
- Stop fertilizing trees and shrubs to allow them to reduce growth during the heat of summer.
- Continue planting and transplanting container-grown trees and shrubs, but give them extra water and shade protection, if possible.
- Apply extra mulch around the roots of trees and shrubs to hold in moisture.
- Avoid digging or cultivating around shallow-rooted plants or otherwise disturbing the roots.
- Take softwood cuttings of shrubs such as hydrangea, buddleia, rose, and Rose of Sharon.
- Water trees infrequently, but deeply.
Trim and deadhead perennials to encourage repeat blooms.
Perennials and Bulbs
- For fall blooms, shear back chrysanthemums and asters until mid month at the latest.
- Give a light haircut to bushy or leggy perennials to encourage blooming.
- Stop deadheading perennials if you want to collect seed pods from them.
- Areas with longer summers have time for one more planting of gladiolus.
- Support vines and tall plants with trellises or stakes.
- Cut flowers in the early morning when the stems are plump.
- Order your spring blooming bulbs now for the best selection.
- Divide and transplant Oriental poppies this month.
Containers require frequent watering in the July heat.
Annuals and Containers
- Water container plants daily (or even twice a day) this month.
- Add a balanced fertilizer every couple of weeks.
- Deadhead faded blossoms to increase blooming.
- Pinch back leggy stems to encourage branching.
- Start seeds for pansies and other winter annuals.
Cool-season grasses may go dormant during July.
- Continue mowing as needed, at the highest setting for your lawn type (3”- 4” for cool-season grasses, 2”- 3” for warm-season grasses).
- Make sure your lawn gets at least one inch of water per week.
- If water is scarce, consider allowing cool-season fescue or bluegrass to go dormant for the summer.
- Mulch grass clippings to help shade, cool, and feed your lawn.
- Edge planting beds with a string trimmer or lawn edger, for a nice clean look.
- Plant warm-season grasses and keep watered.
- Stop fertilizing lawns in midsummer.
- Make sure lawn mower blades are sharp, so they cut cleanly.
- Check out our Summer Lawn Care Guide for more tips.
It's time for the summer veggie harvest!
Vegetables and Herbs
- Remove garlic scapes (flower heads) to encourage bulb growth.
- Order garlic bulbs for fall planting.
- Add compost or organic fertilizer to vegetable gardens.
- Harvest veggies. Give away any produce you can't use, and remove plants that have finished producing.
- Continue weeding, watering, and removing insects.
- Start seeds for cool-season fall vegetables such as broccoli, cabbage, and spinach.
- Give herbs a haircut, and use the cuttings.
- For maximum flavor, harvest herbs just as the flower buds appear. Shear back annual herbs (such as basil) to encourage a second harvest.
- Mulch sprawling plants to keep vegetables off the ground.
- Harvest berries before birds and squirrels eat them.
- Remove and discard fallen fruits and vegetables.
- Harvest corn when the tassels turn brown and the kernels are full and milky.
- Harvest melons when they slip easily from the vine.
- Give tomatoes extra water, and perhaps a little shade, when temperatures are over 90° F.
Houseplants like summer heat and humidity.
- Put houseplants outdoors in the shade for the summer.
- Water houseplants regularly.
- Feed houseplants every couple of weeks with a balanced organic fertilizer.
- Repot pot-bound houseplants.
Suet feeders are still popular but spoil more quickly in hot weather.
Cleanup and Maintenance
- Attack poison ivy in your yard the moment you spot it!
- Work outdoors in the cool of the morning and stay hydrated.
- Add extra mulch to keep plant roots cool and moist.
- Stay on top of weeds by first pulling any that are blooming, before they set seeds.
- Start a compost pile, or turn your existing one. Sprinkle it with water to keep it moist.
- Clean the filter in water features, and add extra aeration to fish ponds in high temperatures.
- Refresh the water in fountains and birdbaths.
- Clean and refill hummingbird feeders every few days.
- Change suet bird feeders regularly, since it’s more likely to go rancid in the heat.
- Reduce fertilizing, and don't put fertilizer on dry soil. Use water-soluble fertilizers or compost instead of granules.
- Make sure your lawn and garden receives an inch of water per week. Water deeply, at the root zone, and avoid spraying the foliage.
- Use rain barrels to collect and reuse valuable rainwater for your lawn and garden.
- Remove Japanese beetles and other pests when you see them.
- Begin ordering bulbs and seeds for fall planting.
- Provide a shallow pan of clean water for birds and butterflies.
- Take cuttings of annuals, perennials, and herbs for rooting or drying indoors.
- Hardiness and Heat Tolerance – Understanding Your Zone
- Vegetable Garden: Growing Warm-Season Vegetables
- Summer Lawn Care Guide
- Lawn Mower Maintenance