Verticillium Wilt: The Soil-Borne Tree Killer Most Homeowners Never See Coming
Verticillium wilt can begin with a fungus that’s been waiting beneath your lawn for years — possibly since before you owned the property. It can
From environmental stress to pests to pathogens and more, your trees are under constant assault. Simply providing them with proper care is a good first step for protecting them from these threats, but some trees will benefit from a little extra help.
That’s why we have started providing professional potassium phosphite spray and soil-drench treatments. Designed to help stimulate your trees’ natural defenses while also helping to manage several important tree diseases, these treatments are an important component of an overall tree-health plan.
Trees aren’t defenseless against the diseases and environmental stresses they face. In fact, healthy individuals have an array of natural defense mechanisms that help them resist infection, compartmentalize damage, and recover from stressful conditions.
But RTEC Treecare’s potassium phosphite treatments can help support your trees’ natural defenses, combat several key pathogens, and generally give them a better chance of remaining healthy. This multi-pronged approach makes phosphite a valuable tool for homeowners and property managers in the DC Metropolitan area.
Potassium phosphite treatments can certainly be helpful for supporting tree health and managing some tree diseases. But for the best results, they must be utilized in the proper manner, based on each tree’s specific needs. To accomplish this, we provide a few different potassium phosphite services.
Not all struggling trees are good candidates for potassium phosphite treatments. So, we always begin by assessing the health of a tree, analyzing the stressors impacting it, and identifying any pathogens involved. This helps us select the best treatment and improves the likelihood of a positive outcome.
In some cases, spray-on applications serve as the best way to apply potassium phosphite treatments. The best situations for this approach usually feature trees with bark or leaves that are easy to access, diseases that respond to spray-on applications, and products labeled for this kind of administration.
Soil-drench treatments provide another viable method for treating some trees with potassium phosphite. This approach may be necessary based on the product being used or pathogen being addressed, but it can also be helpful when spray-on treatments are not feasible, such as with very large trees.
Dealing with a fallen tree or worried about potential storm damage? We’re here to help—offering 24/7 emergency tree services to keep your property safe!
Potassium phosphite treatments can help manage several important tree diseases and health challenges. But it’s important that you recognize the signs indicating your trees may require support, so you’ll know it’s time to seek professional help.
If you notice any of the following signs or circumstances, contact the RTEC Treecare team for an assessment.
Canopies that become thin or begin shedding leaves during the growing season may be struggling with disease, root problems, or environmental stress. This is especially true of canopy thinning that worsens over time, so treat these problems seriously and contact an ISA-certified arborist for an evaluation.
Any kind of leaf discoloration — including yellowing, premature fall color, spotting, or scorching — can signal a health problem stemming from root issues or disease. It’s wise to have these trees evaluated by a certified arborist and potentially treated with potassium phosphite.
Trees that grow slowly or produce small leaves or short shoots can be suffering from a variety of biotic (living) and abiotic (non-living) stressors. Though not always serious, these kinds of problems may worsen over time, ultimately resulting in the tree’s decline.
Twigs and branches that begin dying from the tips inward may be a sign of an underlying health problem, especially if they occur in multiple places within the canopy. Proper diagnosis is necessary, but some of these problems are caused by things that can be managed with potassium phosphite treatments.
Darkened, discolored, or bleeding areas on the trunk or root flare can indicate a variety of issues, ranging from relatively harmless slime flux to serious canker diseases. For example, some Phytophthora infections, which may respond to phosphite-based treatments, can produce these symptoms.
Root issues can cause a number of symptoms, ranging from poor growth to abnormal bark to a simple failure to thrive. While many diseases affecting tree roots can cause substantial damage, some — particularly those caused by Phytophthora and other oomycetes — may respond to potassium phosphite.
Obvious visual symptoms aren’t always necessary to justify preventive care. Trees growing on properties with a history of tree decline, or those exposed to the kind of suboptimal conditions that increase disease susceptibility, may benefit from proactive treatment before significant decline occurs.
Getting started is easy; you can set up a consultation via phone, email, or our online booking form linked below.
One of our ISA-certified arborists or environmental technicians will take the time to listen carefully to each question or concern.
Our crew will arrive at the scheduled time and carry out the work in a professional, safe, and respectful manner.
We’ll always share some recommendations for the ongoing support and care of your plants and trees.
Your trees are likely the most valuable component of your entire landscape, so it only makes sense to protect them and provide the support they need to thrive. But it’s critical that you choose a tree-care partner with the skills and experience needed to achieve the kind of results you deserve — like the experts at RTEC Treecare.
RTEC Treecare is not only accredited by the Tree Care Industry Association (TCIA), but we were the first tree company in Virginia to earn this honor. Our staff includes several highly trained arborists who have been certified by the International Society of Arboriculture (ISA).
Whether we’re completing a pruning project, removing a tree from your property, or administering potassium phosphite sprays, we always keep safety at the forefront of our minds. We maintain this safety-first approach on every job we carry out, from beginning to end.
Whether we’re assessing your trees for phosphite treatments, applying a foliar spray, or carrying out a soil drench, we always treat your property with respect. Our goal is to leave your property looking as good — and when possible, better — as it did when we arrived.
To achieve the best possible results, you need to start with the best possible equipment. From professional-grade spraying systems to soil drench equipment, the RTEC Treecare team always arrives on the job with the tools needed to complete the job properly.
The RTEC Treecare team has been serving Maryland, Northern Virginia, and Washington, DC for more than 30 years. This kind of deep experience has informed our approach to and understanding of tree care in the local area.
From the moment you reach out to the RTEC Treecare team to the final walkthrough, we always strive to communicate clearly, explain our recommendations, answer any questions you may have, and ensure you are happy with the services we’ve provided.
To provide the peace of mind our clients deserve, we maintain comprehensive insurance coverage, always follow strict safety protocols, and take every precaution to protect you, your property, any nearby structures, and our crew throughout the treatment process.
From tree pruning and removals to soil aeration and mosquito control, the RTEC Treecare team can provide the kind of solutions homeowners and property managers in the DC Metro area deserve.
We serve a variety of different clients, ranging from residential homeowners to homeowners’ associations to commercial property managers to government agencies and more. Visit our Who We Serve page for a full list of clients we serve, or simply contact us directly to determine if we can provide the potassium phosphite services you need.
Our service area includes the bulk of the DC Metropolitan area, including portions of Maryland, Northern Virginia, and Washington, DC. You can see a list of some of the specific communities we serve below!
Still have questions about potassium phosphite treatments or whether they would make sense for your trees? We’ve rounded up seven of the most common questions homeowners and property managers have and answered them below.
Potassium phosphite is a plant health care treatment that can help not only manage some diseases but also stimulate a tree’s natural defenses. Once absorbed via the roots, bark, or foliage, it can move within the tree, making it useful against several important health threats.
Potassium phosphite is especially useful for managing diseases caused by Phytophthora and other oomycetes, commonly called water molds. Depending on the product, host plant, and pathogen involved, phosphite treatments may also be useful for managing several other tree diseases.
Potassium phosphite works in multiple ways. It can directly suppress some plant pathogens, but it can also stimulate a tree’s natural defenses. This combination makes it useful both for managing some existing diseases and protecting susceptible plants from future infection.
Spray treatments involve the application of potassium phosphite to aboveground plant tissues, such as the bark or foliage. When delivered this way, it can be absorbed and move systemically within the plant. Soil-drench treatments, on the other hand, deliver potassium phosphite to the root zone, where it’s absorbed by the roots.
In some cases, yes. Potassium phosphite is often most effective when used preventively or during the early stages of disease development. However, it cannot prevent every tree disease, and its efficacy varies depending on the pathogen, tree species, and timing.
There is no universal treatment schedule. Application frequency depends on the tree, disease or health concern, level of disease pressure, application method, and product being used. Some trees may require repeat applications as part of an ongoing plant health care program.
Not in the sense you’d normally think of a fertilizer. Despite its name, phosphite is chemically different from phosphate, the form of phosphorus plants primarily use as a nutrient. Potassium phosphite treatments should therefore be viewed primarily as plant health and disease-management tools rather than substitutes for phosphorus fertilization.
Verticillium wilt can begin with a fungus that’s been waiting beneath your lawn for years — possibly since before you owned the property. It can
When a tree starts looking unhealthy, most people look up. They check the leaves for discoloration, scan the branches for dieback, or inspect the trunk
Maybe you noticed it while mowing the lawn or edging the sidewalk. A branch near the top of your favorite oak looks a little too
Feel free to leave your contact information on our online form. A consultation is always free, and it’s the first step towards finding a solution for your trees!