Kansas City Landscaping and Lawn Care Ideas

Kansas City gardeners can breathe a sigh of relief that we did not reach the forecasted lows last of week of -20. For many years, we have been lulled into thinking that we may have shifted into zone 6. However, it only takes one very cold night to ensure that we are truly a zone 5 area. The plant hardiness zones are based on the average lowest temperatures for a 10 year period. We are about to reset those zone maps if we approach -20 degrees. Plants are rated to their zones based on laboratory tests as well as the experiences of growers in the fields. Plants rated as hardy to Zone 5 generally survive low temperatures of -10 to -20 degrees. Zone 6 plants are only expected to survive to -10 degrees.

Of course, zones are only part of the answer to how your plants will during this cold snap. Zones define large areas, but not small microclimates that exist around your home. If your plants lie in a low lying area or out on a windswept plain, they are going to have considerably more exposure to cold temperatures than if they are nestled in a protected courtyard, along a south facing wall or on the wayward side of a hill.

That being said, many plants in Kansas City are going to suffer from this cold. Dan Simmons of Show-Me Horticulture and I were talking about what effect this could have on plants. We both agreed that a few of the standouts are plants that have started being popular at retail nurseries lately despite being unproven (or proven poorly) to thrive with very cold winters such as this years. A few plants that are going to be strongly affected are southern Magnolias such as Bracken Brown Beautys, crape myrtles, azaleas, rhododendrons and other broadleaf evergreens. These are all plants better suited to Zone 6. They may have done quite well in Kansas City the last several years, but will be well-tested this winter to see if they have enough protection to survive the extremes.

Even a few proven plants will still be stressed. Boxwoods, yews, and many broadleaf evergreens will likely show some damage come next spring from the prolonged cold weather combined with dry winds that we have experienced over the last several weeks. Another group of plants that will very likely show some signs of stress will be some of the ornamental grasses such as the ornamental fescues, the Japanese Silver grasses and the fountain grasses. Some of the larger trees such as Zelkova, Golden Rain Tree, dogwoods and redbuds could suffer some superficial damage to outermost branches as well.

Unfortunately, there is not much you can do to protect your plants now. If your plants went into the winter relatively healthy and unstressed they will have a much better chance of survival than if they were stressed already. Newly planted plants will have a harder time than older, more established plants. The snow that is insulating the ground is the biggest protection we have right now and this can be bolstered if you are inclined to pile snow around the crowns of your most valuable plants. Another option that can be helpful is to build a windscreen around broadleaf evergreens to help protect them. Lastly, to help plants bounce back as much as possible, give them a good slow soaking of water as soon as the ground thaws and repeat at least monthly throughout the winter. This will help immensely as your plants begin to heal their wounds.

This spring will be quite revealing as we learn a lesson of what plants truly are able to survive Kansas City’s coldest temperatures. We will be better gardeners if we observe and learn from what nature teaches this week and choose plants that will thrive in Kansas City even during when it is at its coldest.

If you have any questions, please feel free to visit me at www.HamonsLandscaping.com or posting questions as a comment to this blog post. I enjoy talking to other plant lovers and answering any questions you might have.

Kansas City’s Lawns and Landscapes will benefit dramatically if you know how to properly water them. There is no other homeowner controlled aspect of caring for your plants more critical than proper irrigation. It is also the number one mistake I see Kansas City homeowners doing

It is essential to first understand what your plants want in an ideal world. Most of our lawns and landscapes in Kansas City will thrive on 1.5” of water per week. This can come from either rainfall or irrigation. Ideally 1.5 inches would be applied in one long and slow watering. However, in Kansas City, our clay based soils have a hard time absorbing more than ½ inch of water per hour before water begins to run off the surface so we have to water very slowly – hard for sprinklers to do – or water on multiple days in smaller amounts. Counter intuitively, we want these watering cycles to be on successive days, not spread evenly through out the week since our goal is to water deep into the ground and not to keep the surface moist.

Knowing how much water we need is the first step – the next step is knowing how to apply that water and for how long. Most homeowners will either be applying water by manual sprinklers or an automatic irrigation system. Both require you to know how much water is applied in a given amount of time by your system.

To measure the output of your sprinkler heads…

1. Set a container with straight sides (I use a butter dish) in the middle of the sprinklers path. a Turn on the sprinkler and monitor the amount of water in the container.
2. Turn off the sprinkler when the amount of water in the can has reached one inch (measure with a ruler – it can be deceiving)
3. This is how much water that sprinkler system puts out in one hour.

Now, I know most of you will not take the time to accurately measure out your sprinklers output – despite its importance. So here are some rules of thumb for determining your sprinklers output. For automatic irrigation systems – spray heads (the ones that pop up and don’t move) typically need about 45 mins to put down 1” of water and rotors (the ones that sweep back and forth) need about 2 hours. So a generic program that I suggest for my customers is designed to put down 1.5” of water spread between 3 separate watering cycles. I set it so that the lawn gets watered Monday, Tuesday and Friday. This is a good compromise of watering deeply but also making sure that the water does not run off.. I set zones with spray heads to come on for 30 mins and zones with rotors to come on for 60 mins. This is adjusted if the soil is unable to absorb this amount of water. Also, all watering should be done to supplement mother nature. If she gives us ½” of rain then you can reduce watering by that amount.

For those of us unlucky souls who do not have automatic irrigation it takes a much longer to water our lawns. Most of the typical impact sprinklers used if set on full circle put out about 1/3 of an inch per hour. Since they water slower they can be left on longer. I usually suggest you water twice a week for 2 hours before moving the sprinkler. If you are only using the sprinkler in a half circle then you can cut that in half

Rain Gardens can be a great way to solve landscaping problems in Kansas City.  landscapers can use them to effectively deal with drainage issues that have been plaguing homeowners for years and are often  better solution than simply sending the water further down the hill to the neighbors yard.

Here is a concept rendering for a rain garden I will be installing soon in a customer’s landscape.  I will chronicle this build and update the blog with its progress including before and after shots.

If you have any questions about rain gardens please be sure to leave a comment and I would be happy to share what I know,.

This spring has been a landscaper in Kansas City’s dream.  All the plants are doing well with mild temps and ample rain.  The only negative so far has been that all the rain has made it nearly impossible to do landscaping or lawn care work.  It is just been too wet.

As Charles Dickens would have said “It has been the Best of Springs – It has been the Worst of Springs”

The end of the season is a time for reflection. I am a man who wears many different hats – husband, teacher, and landscaper. Wearing these different hats gives me the chance to constantly learn new things and apply these to other parts of my lives.

I have found that as a landscaper in Kansas City,

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Using this warm couple days would be great to add some water to your lawn.But it just rained you say.  YES — but only .5inch or less in most cases.  By watering another 1/2 inch now you will be getting the benefit of 1″ of rain with only 1/2 the water usage.  If you put a half inch down today — You would be set until some warm day in January.  1″ of water is infinitely more helpful to your lawn than a half inch because it feed and encourages deep roots.Also – don’t forget to soak any shrubs or trees planted within the last season or two.  Put a slow drip on them and you’ll be rewarded with better plants.  Its hard to rely on snowfall for winter watering because so much of it runs off the surface.  Use your hose when you can!