The 10 Summer Plant Care Mistakes to Avoid
Published On: Jul 13, 2026
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Summer can be one of the toughest seasons for your landscape.
High temperatures, drying winds, blazing afternoon sun, and inconsistent rainfall put every plant to the test. While established landscapes often weather these challenges with little trouble, newly planted trees, shrubs, and perennials require extra attention during their first growing season.
The good news is that most plants don't fail because the summer is too hot.
They struggle because of a few common mistakes that are easy to avoid.
Here are the ten biggest summer plant care mistakes I see homeowners make, and how you can avoid them.
1. Watering Too Often Instead of Watering Deeply
This is easily the most common mistake.
Many gardeners reach for the hose every evening and sprinkle plants for a few minutes. Unfortunately, shallow watering only wets the top layer of soil, encouraging roots to stay near the surface where the soil dries out the fastest.
Instead, water slowly and deeply so moisture reaches the entire root ball and the surrounding soil. Then allow the upper layer of soil to begin drying before watering again.
Deep roots create stronger, healthier, more drought-tolerant plants.
2. Assuming Every Wilted Plant Needs Water
A hydrangea drooping at 3:00 in the afternoon doesn't always mean it's dry.
Many plants temporarily wilt during the hottest part of the day as a natural response to heat. If they recover by evening or the following morning, they're simply protecting themselves.
Before watering, check the soil several inches below the surface. Water the soil, not the clock.
3. Planting Too Deep
One of the most damaging mistakes happens before summer even begins.
Trees, shrubs, and perennials planted too deeply often struggle during hot weather because their roots aren't receiving the oxygen they need.
The top of the root ball should sit level with or slightly above the surrounding soil. Planting a little high is almost always better than planting too low.
4. Forgetting to Mulch
Mulch is one of the simplest ways to protect plants during summer.
A 2 to 3-inch layer of shredded hardwood mulch helps:
- Hold moisture in the soil
- Reduce soil temperatures
- Suppress weeds
- Protect developing roots
Keep mulch away from trunks, stems, and perennial crowns. A wide, even mulch layer is far more beneficial than a tall mulch volcano.
5. Fertilizing During Extreme Heat
When plants appear stressed, many homeowners assume they need fertilizer.
Usually, they need water.
Heavy fertilization during periods of high heat can encourage tender new growth that's more vulnerable to stress. During summer, focus on root health, moisture, and proper care rather than pushing rapid growth.
6. Ignoring Newly Planted Trees and Shrubs
Plants installed this spring are still establishing.
Even if they look healthy above ground, they're working hard below the surface to develop new roots.
Check new plantings frequently during hot weather, especially after several rain-free days. Consistent care during the first year is one of the best investments you can make.
7. Pruning Too Aggressively
Healthy leaves are the plant's food factory.
Removing too much foliage during summer reduces the plant's ability to produce the energy it needs to establish roots and recover from heat stress.
Limit pruning to removing dead, damaged, or diseased branches. Save major shaping and rejuvenation pruning for the proper season.
8. Forgetting That Containers Dry Out Faster
Plants growing in containers, patio planters, and hanging baskets can dry out much faster than those growing in the ground.
Dark-colored pots, windy patios, and reflective surfaces further increase water loss.
Check the container soil daily during periods of extreme heat, and water thoroughly whenever the soil begins to dry.
9. Expecting Immediate Growth
One of the biggest misconceptions about newly planted landscapes is that every plant should immediately produce lots of new growth.
Often, the opposite happens.
Trees and shrubs commonly spend their first summer building roots rather than producing foliage. This hidden work lays the foundation for vigorous growth in the years ahead.
Sometimes the healthiest plant is the one that appears to be doing the least above ground.
10. Giving Up Too Soon
I've seen countless homeowners assume a struggling plant was lost, only to watch it recover beautifully once cooler weather arrived.
Heat stress can temporarily slow growth, reduce flowering, and cause minor leaf damage without permanently harming the plant.
Continue providing proper care, monitor soil moisture, and be patient.
Plants are remarkably resilient when given the opportunity to establish.
Bonus Tip: Give Roots Every Advantage
Healthy landscapes begin below the surface.
Whenever I install a new tree, shrub, or perennial, I use Woodie's Root Booster to help encourage strong root development during establishment. Combined with proper planting, deep watering, and consistent mulching, it gives new plants an excellent start and helps them better handle the challenges of summer.
A strong root system is the best defense against heat, drought, and environmental stress.
Woodie's Take
Summer gardening isn't about perfection.
It's about consistency.
You don't have to water every day. You don't have to fertilize constantly. You don't have to panic every time a hydrangea droops on a hot afternoon.
Instead, focus on the basics.
Plant at the proper depth. Water deeply. Mulch correctly. Build healthy roots. Pay attention to what your plants are telling you.
I've learned over the years that the best gardeners aren't the ones who do the most.
They're the ones who understand what their plants truly need and then give them the time to grow.
Do that, and you'll be amazed at how resilient your landscape becomes, even during the hottest days of summer.