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No one is really enjoying this latest prolonged blast of cold weather. We are all stuck inside doing our best to keep ourselves (and our kids) entertained and warm. We must have been due for this as we have been spoiled with mild winters the last few years. So, those mild winters, along with other things, have encouraged an increase in insect populations we have seen in our trees, shrubs, perennials and lawns, right? This arctic blast will surely help reset those bloated insect populations, correct?
The answer to those questions is complicated. This is because many insects have adapted ways of making it through a cold, harsh winter. Migration, hibernation, freeze tolerance (insects can produce an anti-freeze to keep them safe) and freeze avoidance are just some of the ways insects make it through.
In many cases it is the spring weather and not the winter weather that can determine the fate of insect populations.
For example, warm early springs can encourage insects to leave their winter hiding spots to search for food. If this is done too early there is not enough new plant growth for insects to feed on. This can lead to insect starvation. On the other hand, a cold spring will keep the insects in hiding longer which means they could miss one or two reproduction cycles. This leads to lower populations until summer. Just like baby bear’s porridge and rocking chair the conditions have been “just right” the last few springs for insect population growth and has not been greatly affected, one way or another, by our mild winters.
Heavy spring rains can also impact insect populations. Spring rains will increase mosquito and aphid populations that need the water to reproduce. However, heavy rains will decrease grasshopper (because their dormant eggs laid in the ground get saturated with water and rot before they hatch) and spider mites populations.
The, sort of, good news is this prolonged artic cold should cause some insect die back. The issue is, when talking about dieback, is this dieback not only effects “bad” insects, but the “good” ones as well. To make it through the winter bees flutter their wings, shiver and are in constant motion in the hive to produce heat for the hive and most importantly, the queen. Due to this constant motion bees need to eat a lot. A bee hive can go through thirty pounds of honey in a winter. If they run out of honey or it gets too cold the hive could lose their queen which effectively kills off the hive. So, where the mosquitos and aphids might experience some dieback so might the bees. Nature is a balance and we must be careful what we ask for.
Every year brings something different and it is our job here at ILT Vignocchi to study those treads so we know what to look for from year to year. We will know more when spring arrives what these temperatures did to the overall insect populations.
In case you were wondering…
Every autumn in Illinois brings with it a breathtaking change of color in the leaves of our trees, but although it’s late September, temperatures have been steadily topping out in the nineties every day. Not a traditional sign of Fall, yet the trees are changing color and dropping leaves as if they were not aware of the hot and humid weather.
Aren’t the leaves supposed to change when it gets cooler and we see some frosts overnight?
Do the trees know what time of year it is despite the unusually warm temperatures?
One explanation, according to Native American myth, is that the hunters in the Heavens killed the Great Bear in autumn and its blood dripped over Earth’s forests coloring some of the leaves red. As the hunters cooked the meat, fat dripped from the Heavens and colored some of the leaves yellow.
Not scientific enough for you? Need a more botanical answer?
In case you were wondering what actually initiates the changing color of the leaves and their eventual fall to the ground, read on…
Most people think that cool weather or frost causes the leaves to change color. It is true that there is usually a correlation between the cooler air and the onset of the autumn show. However, while temperature may impact the color intensity, it has less impact on the timing of the color transitions we see in the Fall than do other factors.
A quick trip back to high school Botany 101. During the spring and summer most of the foods necessary for the tree’s growth are manufactured in the leaves. This food-making process takes place in the numerous cells containing chlorophyll, which gives the leaf its green color. This extraordinary chemical absorbs the energy from sunlight that is used in photosynthesis, the transformation of carbon dioxide and water to carbohydrates, such as sugars and starch.
In late summer or early autumn, the days begin to get shorter, and consequently, the nights are longer. Like most plants, deciduous trees and shrubs are rather sensitive to the length of the dark period each 24-hour cycle. When nights get long enough, the cells of the leaves begin to block transport of materials such as carbohydrates from the leaf to the branch. They also block the flow of minerals from the roots into the leaves. Because the starting time of the whole process is dependent on night length, fall colors appear at about the same time each year in a given location, whether temperatures are cooler or warmer than normal.
The fact is, the vivid yellow and orange colors have actually been there throughout the spring and summer, but we haven’t been able to see them. The deep green color of the chlorophyll, which helps plants absorb life-giving sunlight, hides the other colors. In the fall, fewer hours and less intense daylight prompt the leaves to stop the food-making process. The chlorophyll breaks down, the green color disappears, and the yellow and orange colors already in the leaf become visible again to the human eye. As the trees break down the green pigments and nutrients stored in the leaves they are shuttled into the roots for reuse in the spring.
Along with the green pigment of chlorophyll are carotenoids, yellow to orange pigments, which, for example, give the orange color to a carrot. At the same time other chemical changes may occur which produce red anthocyanin pigments resulting in even more variation in the Fall color scheme. Some mixtures give rise to the reddish and purplish fall colors of trees such as dogwoods and sumacs, while others give the sugar maple its brilliant orange. For most of the growing season these colors are masked by the great amounts of green coloring.
The variations in Fall color are due to the mixing of varying amounts of chlorophyll residue and the other pigments in the leaf combined with a varied response to weather conditions. For instance, as the nights become cooler, the sugars trapped in the leaves of some oaks and maples will often form a red pigment. The degree of color will also vary from tree to tree. Leaves directly exposed to the sun may turn red, while those on the shady side of the same tree or other trees may be yellow.
As the fall colors appear, other changes are taking place. At the point where the stem of the leaf is attached to the tree, a special layer of cells develops and gradually severs the tissues that support the leaf. At the same time, the tree seals the cut, so that when the leaf is finally blown off by the wind or falls from its own weight, it leaves behind a leaf scar. Most of the broad-leaved trees in Illinois shed their leaves in the fall. However, the dead brown leaves of the oaks and a few other species may stay on the tree until growth starts again in the spring.
In general, autumn weather conditions favoring the most brilliant colors are warm sunny days and cool, but not freezing, nights. When there is mainly warm, cloudy and rainy weather in the fall, the leaves may have less red coloration. A few hard frosts can cause the leaves to wither more quickly and drop to the ground.
So, in case you were wondering, with all due respect to the Native American myths, it is a combination of temperature, light, and water supply that have an influence on the onset, the degree, and the duration of fall color.
Enjoy it while you can, because it doesn’t last long!
They all look the same from a distance but show subtle differences when examined closely.
The same might be said of snow removal contractors. We may all look the same at first glance, (trucks, tractors, plows, etc.), until you take the time to find out a little more about what we do and how we do what we do;
and you should take that time.
The subtle (or sometimes extensive) differences in capabilities, commitment, and conscientiousness will have a significant impact on the performance on your property; and that performance can make you, the property/facility manager, look like a hero to your residents, tenants, and employees…or not.
Here are five important lines of questioning to help you ensure that you are hiring the contractor best suited to make you look like a hero.
Contract terms have many variations (per plow, per inch, lump sum, time & material, etc.). You need to have clear terms that suit your specific needs, with reliable pricing, and no surprises. While cost is always a factor when making contractor choices, the less obvious consequences of using a lower priced but ultimately incapable snow removal contractor can cost you much more than money if that contractor fails to perform during one of Chicago’s challenging winters. Additionally, if those less expensive contracts are peppered with “extra” charges, you can find yourself paying much more than you would have had you chosen a more comprehensive service provider.
Do you handle the snow removal work in-house with your own employees or do you need to rely on the help of outside subcontractors who may not offer the same level of commitment to the work?
Who are some of the customers you work with now that I can talk to about their experience with you?
How are your crews dispatched and monitored throughout an event?
Do you rely on media broadcasts, airport reports, your own production yard, or will you send a representative out to my property to assess conditions on the site prior to mobilization?
What is your reporting process to ensure that I will be kept informed of progress and problems throughout a weather event?
Who will be available to me for communication regarding issues and special needs?
What is your policy for repairing or resolving damage that occurs as a result of the snow removal efforts?
Taking the time now to find out a little more about the differences between contractors by asking these important questions will help to ensure that you are using the company best suited to satisfy your needs.
At ILT Vignocchi, we welcome your scrutiny; and if you become a customer, we will make you look like a hero.
Call or email us today and find out more about the ILT difference.
Most people think of fall as the end of the growing season and the beginning glimpse of another Chicago winter. Well try to look at it as an ideal time to plant!
Fall is a perfect time for planting shrubs, trees, grass seed, and even perennials if they have a developed root system. Fall planting gives plants time to develop roots before winter’s blustery conditions. The conditions are also less stressful and there may be more reliable precipitation.
What happens during fall conditions is a plant’s leaf and flower production is usually slowing down and approaching dormancy. Therefore, a plant can focus on root production. Roots continue to grow when other parts of the plant are not. Generally speaking, root systems will keep growing as long as the soil temperature is at least 50 degrees.
Although we generally get more rain in fall, the good news is that plants use less water then. Because days are increasingly shorter and cooler in the fall, plants are going to be photosynthesizing less and using less water.
Fall is also when depleted nurseries can begin to dig plants again, so varieties that were either unavailable or just downright unsightly in July and August, may become available.
Finally, don’t forget about BULBS! Its often surprising why more people don’t take advantage of this relatively inexpensive way to welcome in Spring. To achieve a gorgeous Spring show bulbs are planted in late fall.
If you’d like to start planning a fall project, it is right around the corner, so call us now and we will be happy to assist you!
After an uncharacteristically hot and dry June, Mother Nature just sent us a harsh reminder of her ability to restore rainfall statistics rapidly.
Unfortunately for many homeowners and businesses, this reminder came in the form of a seven-inch downpour over a 24-hour period that is still causing overflow and flooding around local rivers, lakes, and retention ponds.
While it is difficult to predict and prevent the kind of flooding issues that are created by such catastrophic weather events, these events serve as a reminder to property owners, both commercial and residential, to be more aware of the impact that water flow has around your property. Having a well-conceived and expertly executed drainage system around your buildings and grounds can mean the difference between staying high and dry through any weather event, or dealing with flooded yards, basements, parking lots, and roadways.
Generally, rainfall is the catalyst for creating drainage issues but ground water, specifically the location of the water table, can also play a role in the ability of water to move by design. Where land is flat, soils are dense (clay), or the water table is high, a well-designed drainage system is a priority. Consideration of grading, water flow, and proper drainage is essential to prevent minor issues during normal weather and to minimize major damage during catastrophic events like the one we experienced here in northern Illinois last week. Without proper drainage systems in place, water can enter and undermine structures, damage drives and roadways, cause erosion issues, and drown expensive plant material.
It is not always enough to rely on the original drainage plans that were created for your property when it was first developed and constructed. Typically, the more recent the development took place, the better the chances are that the drainage systems were designed and constructed to effectively move water around the property. Older properties may have experienced settling, ground shifts, changes in water tables, neighboring development, or many other factors that can influence the effectiveness of these systems. New or old, it is a good idea to observe and review the water flow issues on your property before a major problem occurs.
SURFACE WATER is one of the more common problems associated with improper or inadequate drainage systems. Sites with clay soils will likely have issues with lingering surface water. By design, developed land should be graded to drain so that water flows through swales or sheet drains across turf or pavement to the curb or storm drain. The reality is that builders don’t always get their grades right and water becomes trapped, causing puddles on pavement, backflow against foundations, soggy zones in lawns, and muddy planting beds.
Downspout/sump pump discharge is a huge contributor to surface water issues. Enormous amounts of water can come off a building’s roof or be channeled into a sump pit during a typical rainfall. This water is often just re-directed back along the foundation of a building where it can go right back into the sump pit or collect on the surface of the ground around the structure.
SUB-SURFACE WATER collects underground, and becomes trapped when there’s poor drainage due to the existing soil structure or high water tables. When it freezes and expands, the potential for damage increases. The frozen water pushes against your foundation and paved surfaces, causing heaving, cracking, and structural damage.
Solutions to improper site drainage can range from the very simple to much more complex depending on the nature of the issue and its underlying cause. Conceptually, solutions fall into two basic categories.
Please make note that whenever you are redirecting runoff, you must send it to a suitable outlet. Discharging runoff to an unsuitable area will just move the problems downhill. Be aware that redirecting runoff without collecting it or allowing it to percolate into the soil can negatively impact neighboring properties.
The first step in solving drainage issues on any property is discovering that they exist. Problems like foundation seepage and erosion might not be obvious until a major issue develops at which point resolution can be expensive and complicated. To become aware of potential trouble spots, walk your grounds after a rainfall event and look for places where water has collected.
Does it take more than an hour or two to dissipate after a heavy downpour?
Are there signs of erosion around the downspouts or sump pump discharge points?
Are you finding soft, wet spots in the common turf areas that do not dry out readily?
Are you seeing a decline in the health and appearance of plant material located in the collection areas?
These are just a few of the signs that water is not percolating or moving appropriately around the grounds of your development or commercial property. Time to consider having an expert come out and assess the problems. ILT can do simple visual inspections or accurately read existing grades by laser transit to establish the exact topography no matter how flat the site may seem.and determine precisely where and why water is moving the way it is on your property. From that information, we can evaluate and present potential solutions for your consideration.
While last week’s flooding can serve as a reminder of the devastating impact heavy rainfall can have, it does not take a seven-inch downpour of water to cause damage around your property. Finding and resolving water flow issues before they become expensive problems is always a better solution.
Call ILT Vignocchi today and we can start a conversation about resolving water flow issues at your HOA or commercial building.
I have a deep love of pansies. I adore that they come in every color of the rainbow, which is unusual for an annual flower. It is wonderful that they can be pure, or blotched or multicolored all on the same plant. Have you ever looked at pansies when it is about to storm? Try it, they absolutely glow.
What really sets them apart though is how charming cheerful they are.
What can be seen as a drawback? They are a cool season plant and in the Midwest we only get to enjoy them in spring and fall. Oh I’ve done the experiments…transplanting them to the coolest shadiest parts of my yard to no avail. They just peter out. I actually like that they only shine twice a year. It makes them all the more special.
It is thought that pansies are a close cousins to the viola, which has roots in Greece in the 4th century B.C. However, they believe the first pansies were first found in France, because the word pansy is traced back to the French word pensee, meaning thought or remembrance.
In the early 1800’s an inquisitive Lord Gambier and his gardener William Thompson began experimenting with crossing different varieties of pansies. It is William Thompson who is accredited with removing long lines and created large blocks of color on the lower petals, created what is now known as “the face.”
Today popularity booms and most innovations are being made in Germany, Japan and the United States.
What is interesting is the amount of passion to innovate in this area. It isn’t to create a drought free plant, or even one that is resistant to diseases or animals (which they are NOT). The innovation, is to take something that was beautiful to begin with and make it even more so.
I for one am glad they are.
Donna Vignocchi Zych
Growing plants on rooftops is not a new concept. Centuries ago northern Scandinavians harvested sod from their surrounding landscape and placed it upon structures to create effective insulating and water resistant roof systems. The Vikings who explored the upper Atlantic built grass-covered homes where they settled and in Iceland sod roofs and walls have been used for hundreds of years.
Although the living roof or green roof has been in use for a long time, modern green roof technology has helped to elevate this building method from a crudely effective construction element to an aesthetically pleasing, ecologically responsible building solution for age-old building problems and current environmental concerns.
A green roof or living roof is a roof of a building or other structure that is partially or completely covered with vegetation and a growing medium, planted over a waterproofing membrane. It may also include additional layers such as a root barrier and drainage and irrigation systems.
Green roofs can be very basic, known as extensive green roofs that incorporate drought-tolerant, self-seeding native ground covers such as sedums, grasses, mosses and prairie flowers that require little or no irrigation, fertilization or maintenance. These green roofs are lightweight, inexpensive, and can be retrofitted onto existing buildings, often without significant alterations or additional structural support.
Intensive green roofs are more elaborate roof gardens designed for human interaction. They generally have a relatively flat roof surface or mild slope and allow for a larger selection of plants, including shrubs and trees and require specific engineering to be able to conform to the weight load requirements.
Today, the green roof is gaining in popularity as an environmentally conscious architectural expression that is a viable element of any sustainable landscape management plan; and here is why:
Green roof technology was re-invented in Germany in the mid-20th century and quickly spread throughout Europe mainly due to its restorative environmental impact.
Today, Chicago has been a leader in green roof installations with up to 7 million square feet on approximately 500 rooftops; the most of any city in the United States. The benefits of the green roof have not been ignored by suburban businesses and multi-family residential buildings either.
Corporations, commercial building owners, and homeowners associations are looking for solutions to increase employee well-being, decrease their carbon footprints, increase their LEEDS scores, and differentiate their properties from their competition. The rooftop garden has proven to be just such a solution.
Reach out to ILT Vignocchi today to inquire about the potential for your headquarters, office building, clubhouse, or other structure to benefit from a green roof installation.
This 2016 report sheds some light on the landscape industry as well.
We learn that the trend for larger homes is still on the uptick. The trend challenges landscape architects to combat municipality’s permeable surface limitations with permeable paving or vertical gardening when creating outdoor spaces.
Another popular trend fueled by an increase in median age is being mindful of accessibility issues. This effects outdoor spaces as well and must be thought of ahead when creating walkways, gates, and outdoor entertainment spaces.
One of the most interesting and most pressing trends is not the increase in those interested in high end landscapes, but those that also seek ones that require low irrigation. It is something that we hear frequently from our customers. “I want something low maintenance.” It is heartening to see that a sense of responsibility to environmental preservation is continuing to creep into design fields.
As design professionals it is important that we don’t design inside a box. We try to keep abreast of all sorts of industry trends so we can deliver the most thought out products for our customers.