Getting to the root of wilting plants

The weather doesn’t seem to want to give gardeners a break this year. After going from cool, wet soil temperatures in May, plants are now baking in hot, above-normal temperatures in dry, cracked soil. I can’t remember a time when I saw cracks in the soil surface due to hot weather in June.

Because of the weather conditions in May and now, I am seeing quite of bit of plant collapse due to root issues.

I have had several phone calls and a few plants in my own garden simply wilt and collapse within the last few days. My Ohio State University Extension colleagues across the state are seeing and hearing the same things from clientele.

There are a few different issues at play in this case. First of all, the roots didn’t have a chance to fully develop when they were planted in May. In some cases, the soil temperatures were cold and combined with wet soils, root rots developed.

Add to the mix of poor root development, hot temperatures and dry soil, and what do you expect? Plants have simply had poor growing conditions to develop a root system to survive these temperatures.

In some cases, plants were wilting despite the soil being wet from irrigation or a rainfall.

And of course, when we see wilting plants, what is our first inclination? water! Always check the soil first to see if it’s damp before watering in this situation.

Since roots aren’t developed and the plant is losing water faster than can be absorbed, wilting occurs. Many times it happens in the heat of the day and the plants recover at night.

The only recommendation for this type of problem is to wait it out for a few days. Water the plants as needed only after checking the soil.

It won’t hurt to dig up a plant and inspect the root system to make sure roots are beginning to develop. If you don’t see any white, firm roots developing, it may be beyond the point of survival.

Don’t fertilize these plants. In fact, never fertilize plants that are under stress.

Check out the plants, water when needed, and hope for better weather.

I am also seeing quite a few insect and disease pressures building. This could be a banner year for both!

It’s not too late to plant vegetables in the garden if you haven’t already done so. Many garden centers still have nice quality tomatoes, peppers and more left, and there is plenty of season left.

Seeds for green beans, zucchini, and other short season crops can also be planted. Don’t let the weather discourage you!

My weekend is going to be spent weeding. The warm weather and a few spotty showers have been perfect for the weeds to grow!

Pam Corle-Bennett is an Ohio State University Extension horticulture educator and the state Master Gardener volunteer coordinator.

About the Author