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Why Your Landscape May Be Struggling in North Texas

  • Writer: Marshall Grain Co.
    Marshall Grain Co.
  • 6 days ago
  • 8 min read
rose bush infected with phytophthora plant disease in North Texas
Rose bush infected with phytophthora - a plant disease common in North Texas.

Sometimes the symptoms are obvious. Something may be chewing on your plants. Your lawn may develop brown patches. A shrub may have dead branches. Other times, it’s more frustrating than that. You water. You fertilize. You try to stay on top of things. But the yard still does not look the way you think it should.


There are a lot of reasons why your landscape might not be doing well, and the problem may not be lack of effort on your part. It could be that you have one or more issues that haven't been identified.


Just a few common landscape problems North Texas homeowners see are:

  • patchy turf

  • yellowing leaves

  • bare spots

  • dieback

  • slow growth

  • poor flowering

  • repeated plant loss


And there can be several possible causes:

  • too much shade

  • too much sun

  • heat stress

  • poor soil

  • drainage problems

  • watering mistakes

  • insect pests

  • disease

  • plants that were never a good fit for that spot in the first place


You may even have more than just one problem.  So if you jump straight to a fix before you know the reason, you can spend a lot of time and money going in circles.


That is why random treatments often disappoint people. More fertilizer won’t fix too much shade. More water won’t fix poor drainage. Replacing the same plant over and over will not help the problem is that there is a disease present in the soil.


So before you assume your landscape just needs “a boost,” it is worth slowing down and looking at what may actually be going on.


Too Much Shade Can Quietly Wreck a Lawn

This is one of the most common problems we see, and it is one a lot of homeowners underestimate.


Most North Texas turf grasses, like St. Augustine, Bermuda, and Zoysia, are sun lovers. St. Augustine and Zoysia need 5-6 hours of direct sunlight depending on the variety. Bermuda really isn’t happy with less than all day sun. Your lawn may never really fill in and may stay thin or patchy. You may also notice that shaded areas stay damp longer, which can invite fungal disease.


This happens a lot in older neighborhoods where trees have matured over time. A lawn that did fine five years ago may no longer be getting the light it needs.


The same thing can happen with landscape plants. If they are not getting the right amount light, they may get leggy, thin, or weak-looking.


Practical takeaway: If an area is too shady, the answer isn’t “take better care of it.” The answer may be a different plant choice, a different turf strategy, or a redesign of that part of the yard.


Poor Soil Can Make Everything Harder

Many North Texas yards have poor soil, whether it is heavy clay or overly porous sandy soil. Either way, it usually needs to be improved before plants can really thrive.


Poor soil affects almost everything:

  • root growth

  • water movement

  • drainage

  • nutrient availability

  • plant resilience during heat and drought


While a plant can survive in poor soil, it may still not be healthy. That is an important distinction. It’s a question of whether your landscape is merely surviving or really thriving.


Healthy soil is the foundation of a healthy landscape. Think of your soil as like the foundation of your home. If it’s not solid, your home can become unstable and begin to fall apart.


This is what happens when you use chemical treatments. Chemical fertilizers and other synthetic products kill off essential microbes and other biological ingredients in the soil, robbing your plants of the ability to take up water and nutrients.


This is the opposite of an organic program, which feeds and encourages the beneficial organisms in your soil including billions of beneficial bacteria and fungi that support root development and boost your plant’s immunity to diseases.


At Marshall Grain, we've adopted an organic philosophy because we know it is a superior approach. But it's much more than simply avoiding harsh chemicals. It’s about building a healthier landscape over time so that your plants have the best possible growing environment.


It’s important to understand that the two approaches are incompatible with each other and their products are not interchangeable. In fact, a single application of a chemical fertilizer can totally destroy your organic program.


Marshall Grain’s organic maintenance programs not only help chemically treated landscapes recover but continue to improve your landscape by:

  • improving soil structure by adding organic matter

  • creating a more balanced landscape ecosystem by supporting soil biology

  • eliminating stress caused by chemicals

  • choosing better-suited plants

  • using organic insect and disease controls when needed


Drainage Problems and Watering Mistakes Often Go Together

Poor drainage can lead to:

  • Fungal disease

  • weak root systems, and even

  • catastrophic drowning of your plants


Pooling water and erosion are both signs that your landscape may have a drainage issue that needs your attention.


But improper watering can create many of the same symptoms.


A lot of people assume a wilted plant needs more water. Sometimes that is true. Sometimes that is exactly the wrong move. Too much water can also make plants wilt. In fact, overwatering can be worse than underwatering because waterlogged soil pushes oxygen out of the root zone. Roots can actually suffocate, killing the plant in a matter of hours.


Overwatering can also encourage diseases such as phytophthora, black spot, and mildew.


On the other hand, shallow or inconsistent watering can create other problems. Plants may stay alive, but they become stressed because their roots never establish deeply enough to handle North Texas heat. Or fruit and vegetables may split due to inconsistent growth.



Practical takeaway: Good watering is not just about how much. It is also about depth, consistency, coverage, and timing.


Pests May Be Part of the Problem

Sometimes the yard is struggling because insects are actively feeding on it.

Aphids may be visible on your shrubs. Leaves may be visibly chewed. Your lawn may develop brown patches from chinch bugs or sod webworms. Other insects can damage roots or top growth without making themselves obvious right away. Cutworms emerge from the soil at night to feed on your tender vegetables and then disappear during the day, making it hard to spot the culprits.

lawn damaged by chinch bug activity
Lawn damaged by chinch bug activity. The symptoms can look similar to other problems such as brown patch fungus.

Animal pests can also be part of the picture. North Texas landscapes can attract moles, voles, rabbits, squirrels, armadillos, deer, and other unwelcome visitors that damage roots, turf, foliage, beds, or irrigation.


Practical Takeaway: Guessing can get expensive. If the real issue is that bugs are eating your plants, watering and fertilizing won’t fix it.


Diseases Often Show Up After a Plant Is Already Stressed

Plants that are already stressed by heat, poor drainage, weak roots, overcrowding, or watering problems are often more vulnerable to disease.


Organic methods reduce that stress. Rather than relying on harsh chemicals to control pests and diseases, it allows you to take advantage of nature. Healthy soil includes beneficial microbes that balance against the harmful ones, and beneficial insects are allowed to thrive and consume the sucking and chewing insects that would destroy your plants.


But problems can still develop and sometimes it takes an expert to diagnose exactly what’s wrong and determine the best organic solution.


That’s when Marshall Grain’s organic maintenance department can help. Our experts can visit your home and recommend organic solutions.


Mini Case Study: A Plant Disease Diagnosed and Cured

In May of 2025, Marshall Grain diagnosed the holly bush below with phytophthora ― a deadly plant disease.


The dead plant material was removed and the soil was treated with a cocktail of soil microbes. A year later, in May 2026, the plant is now healthy and growing back.


Shrub with severe dieback and brown foliage caused by phytophthora disease in a North Texas landscape.
Phytophthora root disease can quickly cause dieback and severe decline. Problems like this often begin with stress factors such as poor drainage or excessive moisture.



Previously diseased shrub showing healthy new growth after successful phytophthora treatment in a North Texas landscape.
The same plant after treatment and recovery. Correct diagnosis together with improved growing conditions can often save plants that appear beyond help.

Sometimes It Is Simply the Wrong Plant in the Wrong Place

This one is common, and it is easy to understand once you think about it.


That is one reason Marshall Grain emphasizes Texas native and adapted plants. This is especially true if you want a low-maintenance, drought and heat tolerant landscape. Texas native plants generally require less care than exotic selections and are more likely to survive our extreme climate.


Placing plants according to their sun or shade preferences is also important to avoid ending up with a sickly looking landscape in summer.



Building a Stronger, Healthier Landscape

If you want a tougher, more resilient lawn and landscape that requires less work over time, the best long-term strategy is to build healthier soil and choose plants that fit your unique situation.


That usually means:

  • improving soil with organic matter and natural amendments

  • choosing Texas native and adapted plants where appropriate

  • correcting drainage issues instead of working around them

  • adjusting watering habits

  • using organic insect and disease controls as needed

  • avoiding chemical-heavy shortcuts that can create more stress over time


Marshall Grain’s organic maintenance programs help homeowners move in that direction by improving soil structure, supporting soil biology, and creating a healthier growing environment for lawns and landscape plants.


So Where Should You Start?

If your landscape is struggling, consider these questions:

  • Does the same area struggle every year?

  • Has the amount of sun or shade changed?

  • Does the problem get worse at a certain time of year?

  • Is the soil staying too wet or drying too fast?

  • Are you seeing signs of chewing, spotting, dieback, or bare patches?

  • Is this plant actually a good fit for this location?


For avid gardeners who like working in the yard themselves, Marshall Grain’s garden center staff can help you identify the problem and recommend organic products, soil amendments, mulch, fertilizers, or better plant choices.


For homeowners looking for professional help, Marshall Grain can provide customized organic solutions that save you time and frustration. Whether you need a one-time visit or a long-term maintenance program, we can help diagnose the problem and recommend the right next step.


If you live in Arlington, Bedford, Colleyville, Coppell, Euless, Flower Mound, Grapevine, Keller, Hurst, Irving, Roanoke, North Richland Hills, Southlake, Trophy Club, Westlake, or Westover Hills, Marshall Grain can help.


Give us a call to find out more: 817-416-6600. Or book a consultation now.


People Also Ask


Why is my landscape struggling even though I water it?

Because watering may not be the real problem. Too much shade, poor soil, drainage issues, pests, disease, heat stress, or the wrong plant for the location can all make a landscape struggle even when it is watered regularly.


Why do plants keep dying in the same spot?

That usually points to a site problem rather than bad luck. Common causes include poor drainage, poor soil, too much shade, or possibly disease.


Can poor soil really make that much difference?

Yes. Poor soil affects roots, water movement, drainage, and plant resilience. In North Texas, soil improvement is often one of the most important steps in helping a landscape perform better.


Can too much shade hurt St. Augustine?

Yes. St. Augustine tolerates more shade than some turf grasses, but it still needs enough light to stay thick and healthy. If it does not get enough sun, it may thin out and become more vulnerable to disease.


Can an organic program help a struggling landscape?

Yes. An organic program can help improve soil structure, support healthier roots, and create a more balanced landscape over time. It is not magic, but it often improves long-term plant health and resilience.


FAQ


What is the most common reason a landscape struggles in North Texas?

There is not just one. Common causes include poor soil, watering problems, too much shade, drainage issues, pests, disease, and plant mismatch.


Should I replace struggling plants right away?

Not always. If the underlying problem is still there, the replacement plant may struggle too.


What does Marshall Grain recommend for a struggling landscape?

Start by figuring out the real cause. That may mean improving the soil, adjusting watering, solving drainage problems, choosing better-suited plants, or addressing pests or disease with organic solutions.


Does Marshall Grain help DIY gardeners too?

Yes. Marshall Grain’s garden center supports DIY homeowners with plants, organic products, soil amendments, fertilizers, and practical advice, and the company also offers professional services.

 


 
 
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