There is a natural tendency to judge a lawn by what we can see. When it is green, we assume it is healthy. When it turns brown, thins out, or begins to struggle, we search for the most obvious explanation. It must be the heat. It must be a lack of water. It must be disease. It must be something that happened recently.

But lawns, much like people, seldom arrive at a difficult place because of one single moment. What appears to be a sudden failure is often the visible result of a long season of quiet depletion. The same can be true of us.

From approximately Halloween through May 1, our area normally receives a little more than seven inches of precipitation. This year, we experienced a deficit of approximately 50 percent of that during that same period. March and April are normally two of our most important months for spring moisture. We generally receive close to five inches of precipitation during those two months, but this year we received only about half of that amount.

Many lawns still turned green. They grew, they were mowed, and some even looked healthy for a while. But tall fescue is a cool season grass. Fall and early spring are the seasons when it should be developing roots, producing new tillers, absorbing nutrients, and storing carbohydrates for the difficult months ahead. While we were looking at the blades, the real story may have been unfolding beneath our feet.

When soil remains excessively dry through fall, winter, and early spring, fine absorbing roots may begin to dry out and lose function. This process is called root desiccation. The grass may still produce enough leaf growth to appear green, but that does not mean the root system is deep, dense, or prepared for summer. Sometimes the canopy is presenting an appearance the roots cannot support for long.

Every plant lives within an energy budget. Through photosynthesis, grass captures sunlight and produces carbohydrates. Those carbohydrates become the resources the plant uses to grow leaves, develop roots, repair damaged tissue, defend itself from disease and insects, and store energy for future stress.

When conditions are favorable, the plant may produce enough energy to accomplish all of those things. It can grow, repair, defend itself, and save something for later. But when conditions become difficult, those needs begin competing against one another.

A plant damaged by drought must use resources to maintain and replace roots. A plant facing disease must invest energy into defense. A plant exposed to extreme heat must protect living cells and manage water loss. The plant is being asked to spend more at the very time it may be producing less.

That is where many lawns found themselves this year. They moved through a dry fall and winter, followed by a spring that provided only about half of its normal precipitation. Instead of entering summer with deep roots and full carbohydrate reserves, many lawns entered summer already trying to recover.

Then June brought nearly five and a half inches of natural rainfall. That rain was beneficial where the soil could accept it and where drainage was adequate. However, on properties where irrigation systems continued to run as though the rain had not occurred, or where the soil was compacted and poorly drained, the root zone may have remained saturated.

Roots need water, but they also need oxygen. That is one of the most important truths we often miss. A soil can be wet and still be unhealthy.

When water fills the pore spaces that would normally contain air, roots lose access to oxygen. Without oxygen, roots cannot function normally. They may struggle to absorb water and nutrients even while surrounded by moisture.

This is especially common in compacted clay. Clay is not automatically bad soil. A well structured clay soil can hold a considerable amount of water that remains available to plants. The problem begins when clay is compressed and the spaces between soil particles disappear. Water may enter slowly, run across the surface, or remain trapped near the top of the soil. The ground may feel wet, yet the roots are still struggling. The problem is not always the absence of water. Sometimes the problem is the absence of air.

This is why the same watering schedule can help one lawn and harm another. A property with healthy soil, deeper roots, moderate shade, less wind exposure, and good irrigation coverage may remain healthy with one or two watering days each week. The lawn next door may have shallow construction soil, reflected heat, tree competition, compacted clay, poor sprinkler coverage, and full exposure to Kansas wind. Those lawns are not living in the same environment simply because they share the same street name.

Watering should never be based on comparison. It should be based on the soil, the root system, the weather, and the actual needs of the plant.

Sometimes people proudly say they have not watered their lawn for six or eight weeks. There can almost be a badge of honor attached to it, as though withholding water proves the lawn is tougher or the property is being managed more responsibly. But plants do not respond to our pride.

Grass and trees are living organisms. They need water, oxygen, and sunlight. If water is absent for too long, the plant dehydrates. If oxygen is absent because the soil remains saturated or compacted, the roots lose function. If adequate light is absent, the plant cannot produce enough energy to support its roots, canopy, defenses, and recovery. Take away any one of these for long enough and the plant will struggle.

Tall fescue may enter dormancy during heat and drought, but dormancy is not invincibility. Dormancy is a survival response. The plant reduces growth and attempts to conserve enough energy to keep its crowns alive. For a while, that strategy may work. But as heat, wind, and dry soil continue, temporary dormancy can become permanent loss.

One of the most important things we can do for tall fescue during the remainder of a difficult summer is to mow it taller whenever possible. The leaves of the grass are not merely something we cut to make the lawn look neat. They are the plant’s solar collection system. They are where photosynthesis occurs and where the plant produces the carbohydrates needed to grow roots, repair damage, defend itself, and store energy.

When we mow tall fescue too short during extreme heat, we remove part of the plant’s ability to produce the resources it needs to survive. The plant must then use stored carbohydrates to rebuild the canopy we removed. It is being forced to make a withdrawal when its savings account may already be nearly empty.

Maintaining tall fescue near four inches whenever possible provides more leaf surface for photosynthesis. It shades the soil and crowns, lowers the temperature near the soil surface, reduces moisture loss, and protects the plant from direct sunlight and reflected heat. A taller canopy does not eliminate the need for proper irrigation, but it helps the plant make better use of the moisture that is available.

Aeration can also become an important part of recovery. Healthy soil needs space for water, air, roots, and soil organisms. When soil becomes compacted, those spaces begin to disappear.

Mechanical core aeration can temporarily improve the movement of air and water while creating space for roots to grow. Fall is often the best opportunity for this work because the air begins to cool, the soil remains warm, and tall fescue returns to active root and canopy growth.

Liquid soil treatments may also support better surface wetting, soil biology, and root development over time. However, severe compaction may still require mechanical aeration. The best soil program is rarely built around one treatment. It may include aeration, quality compost, proper irrigation, taller mowing, responsible fertility, and time.

Grass roots are always growing, aging, dying, and being replaced. This natural root cycling adds organic material to the soil. Old roots leave behind channels where water and oxygen can move. Decaying roots feed soil organisms and contribute to better structure. Healthy plants help build healthier soil, and healthier soil then gives the next generation of roots more room to grow.

That is how resilience is built. It is not built through one application, one watering, or one season. It is built through repeated good decisions.

The heat we are experiencing did not necessarily create every problem we see. In many cases, it simply revealed what was already happening underground. It revealed where roots were shallow, where soil was compacted, where irrigation coverage was weak, where mowing was too short, and where the lawn entered summer without enough stored energy to meet the demands placed upon it.

There is a lesson in that for more than our lawns. We often judge strength by what remains visible. But real strength is usually built in places no one sees.

Roots grow in darkness. Soil structure develops quietly. Energy is stored long before it is needed. Preparation happens before the heat arrives.

The healthiest lawn is not always the one receiving the most water, the most fertilizer, or the most attention. It is the lawn receiving the right care at the right time. It has enough water, but also enough air. It has enough sunlight, but also enough leaf surface to use it. It has roots that are allowed to grow, cycle, and strengthen the soil beneath them.

It has been watered according to its soil rather than someone else’s schedule. And when the extremes of Kansas finally arrive, as they always do, the plant is not depending on what happened yesterday.

It is surviving because of what was built over time.

‘Well Rooted’ is a new column to the Great Bend Tribune written by Jeremy Elliott. Elliott owns a lawncare business and lives in the Great Bend area.