This post contains affiliate links. As an Amazon Associate I earn from qualifying purchases. If you click a link and make a purchase, I may receive a small commission at no extra cost to you.
You can plant crepe myrtles in August, but it takes a little extra care to help them settle in during the heat.
Many gardeners wonder if planting in late summer is a smart move, and the answer is yes, as long as you understand the risks and rewards.
August is a challenging month for planting because temperatures are high and rainfall can be unpredictable, but it’s not impossible.
If you’ve been holding off on planting crepe myrtles in August because you’re worried about the heat, know that with proper watering and a little patience, they can absolutely thrive.
In this post, we’ll break down everything you need to know about planting crepe myrtles in August, from choosing the right spot to keeping them hydrated.
Let’s dig in.
Why You Can Plant Crepe Myrtles In August
The main reason you can plant crepe myrtles in August is that these trees are incredibly tough and heat-tolerant once established.
They’re native to warmer climates like Asia and Australia, so they’re naturally adapted to scorching summer weather.
Another reason is that the soil is warm in August, which actually encourages root growth faster than in cooler months.
When you plant crepe myrtles in August, the roots have a chance to spread and anchor before winter arrives.
Plus, many nurseries have end-of-summer sales, so you might snag a great deal on a beautiful tree.
Let’s look at the specific benefits and challenges.
1. Warm Soil Promotes Fast Root Development
When you plant crepe myrtles in August, the soil temperature is often between 70 and 85 degrees Fahrenheit.
This warmth signals to the roots that it’s time to grow, so they establish much faster than they would in spring.
Faster root establishment means your tree is better prepared to handle the upcoming fall and winter.
Just remember that while the soil is warm, the air is hot, so you’ll need to balance water and shade.
2. Heat Stress Is the Biggest Risk
The biggest concern when you plant crepe myrtles in August is heat stress on the foliage and roots.
Newly planted trees haven’t had time to build a strong root system, so they can’t pull up enough water to cool themselves.
You’ll notice leaves might droop, curl, or even scorch at the edges if the tree is struggling.
To avoid this, you need to provide extra water and maybe some temporary shade during the hottest part of the afternoon.
3. Consistent Watering Is Non-Negotiable
If you plant crepe myrtles in August, you commit to a strict watering schedule for the first few weeks.
You’ll need to water deeply every day for the first 7 to 10 days to help the root ball stay moist.
After that, you can taper off to every other day, but always check the soil moisture first.
A good rule of thumb is to stick your finger about two inches into the soil near the base of the tree.
If it feels dry, it’s time to water again.
How To Successfully Plant Crepe Myrtles In August
Planting crepe myrtles in August isn’t just about digging a hole and hoping for the best.
You need to follow a few key steps to give your tree the best chance of survival in the summer heat.
Here’s a simple guide to help you through the process.
1. Choose the Right Location
When you plant crepe myrtles in August, location matters more than ever.
Pick a spot that gets full sun for at least 6 hours a day, but if possible, provide a bit of afternoon shade for the first week.
Morning sun with afternoon shade can reduce heat stress while the roots establish.
Make sure the area has well-draining soil because soggy roots in hot weather can lead to rot.
2. Prepare the Planting Hole Correctly
Dig a hole that’s about twice as wide as the root ball but no deeper than the root ball itself.
When you plant crepe myrtles in August, you want the top of the root ball to sit slightly above ground level.
This prevents water from pooling around the trunk, which can cause fungal issues in the heat.
Loosen the soil around the hole to help roots penetrate easily, but don’t add too much compost or fertilizer.
Too much amendment in summer can actually burn the tender new roots.
3. Mulch Generously but Keep It Away from the Trunk
Mulch is your best friend when you plant crepe myrtles in August.
A thick layer of organic mulch like wood chips or pine bark helps keep the soil cool and retains moisture.
Apply about 2 to 3 inches of mulch in a wide circle around the tree base.
Just keep the mulch a few inches away from the trunk itself to prevent bark rot and pests.
Tips For Helping Crepe Myrtles Survive August Heat
Planting crepe myrtles in August requires a bit of extra TLC compared to spring planting.
But with these tips, your tree will not only survive but also reward you with gorgeous blooms next summer.
Let’s go through some essential care practices.
1. Use a Slow-Release Watering Method
A soaker hose or drip irrigation system is perfect when you plant crepe myrtles in August.
These methods deliver water slowly and deeply, encouraging roots to grow downward rather than staying shallow.
Avoid overhead sprinklers because they waste water and can wet the foliage, leading to leaf scorch in high heat.
Water in the early morning or late evening to minimize evaporation.
2. Skip Fertilizer Until Fall
Hold off on fertilizer when you plant crepe myrtles in August.
Newly planted trees need to focus on root establishment, not pushing out new growth.
Fertilizing in summer can stimulate tender new shoots that will just wither in the heat.
Wait until the cooler months of September or October to apply a balanced slow-release fertilizer.
3. Watch for Signs of Stress
Keep an eye on your tree for the first few weeks after you plant crepe myrtles in August.
If leaves look crispy or drop off, that’s a clear sign of too much heat.
You might need to increase watering frequency or rig up a temporary shade cloth.
On the flip side, if leaves turn yellow and the soil feels soggy, cut back on watering.
Listening to your tree’s signals is key to a successful summer planting.
So, Can You Plant Crepe Myrtles In August?
Yes, you can plant crepe myrtles in August, as long as you’re prepared for the extra care they’ll need.
The warm soil encourages root growth, but the hot air demands diligent watering and some shade during the peak heat.
You can plant crepe myrtles in August successfully if you follow the steps we covered, like choosing the right location, watering deeply, and mulching well.
It’s a bit more work than spring planting, but the reward is a tree that establishes quickly and blooms beautifully next year.
So don’t let the summer heat scare you off.
With a little attention and care, planting crepe myrtles in August can be a satisfying and smart gardening move.
Your future self will thank you when you’re relaxing under those vibrant pink, purple, or white blooms.