Ice | Kansas City Landscaping and Lawn Care Ideas

Clean-Up in the Spring Garden – Trimming the Knock-Out Roses

Knock Outs are almost Maintenance Free

Taking care of Knock-outs in Kansas City gardens is a little like parenting a very well behaved child. Most of the time they are darling and beautiful and very well behaved. However, occasionally you need to show them some tough love. The tough love is not fun, can be a little prickly, and may even draw some blood. However, your tough love will be rewarded with continued beauty and good behavior. Put off your tough love – and it only gets harder.

The tough love that Kansas City gardeners need to show their roses is a good hard pruning in early Spring. By hard I mean almost tot he ground. We call this rejuvenation pruning. In most situations I suggest doing this every year. You might get away with skipping the first year after you plant them. However, after that – they do best if pruned every year. I think my parenting analogy still could apply here, don’t you?

The nice thing about this hard pruning is that you really don’t need any special training – if you can cut with a pair of scissors you can prune knockout roses. You don’t need to know the details of growing points and inward facing canes like you would if we were doing in-season pruning of a hybrid tea rose. All we are going to do is cut every cane off about 6 – 12” of from the ground.

Step 1: Gather your supplies

The first step to trimming your roses is gather your supplies. I suggest that you have

Long sleeved shirt and pants to protect you from thorns. (my attorney would also say I should probably suggest you wear eye protection too….but life is more fun with a little risk involved). You’ll also want some nice heavy leather gloves.
A decent set of pruners. No need to run out and buy a $50 pair of Felco pruners. Instead I would suggest a nice pair of $10 pruners for this job and save the Felco’s for the important pruning.
Some twine to tie up your bundles. After you cut down the roses canes – you are going to need to dispose of them and tying them in bundles works well for that.

Step 2: Approach the Naughty bush and begin cutting

You should now see your ugly Knock out rose Bush in your yard. It is not pretty and it needs to be rejuvenated. Your going to do this garden task most likely sitting down on your bum so that you can scoot in under the plant and cut each cane about 6-10” off the ground. Notice I did not include a ruler in your needed supplies. No need for that amount of exactness. The canes you cut off are not going to grow any more. However new shoots will branch off these existing canes and be your new branches.

Step 3: Check your Work

Your newly ‘parented” roses should look like this. All the canes are cut off approximately 10” off the ground.

Step 3: Wait for Growth

Soon your cut off rose will begin to appreciate the tough love it ahs given and begin shooting up some new growth! This will be the start of this summers beautiful plants!

Top 10 Kansas City Landscape Plants

1. Allegheny Viburnum (Viburnum rhytidophylloides ‘Allegheny’)

This plant works great when you need a large shrub to add structure to the back of a bed or as a screen in the back yard. it is not tidy enough to be used as a specimen plant or in any highlighted position With care it can grow to 12 feet tall in less than 5 years. I have several planted as a screen against a shed in my backyard and I have pushed them hard – but they are over 15 feet tall in just 5 years.

The shrub has thick 6” leaves that are thickly textured and beautifully colored. It has a surprising delicate white flower that persists for Most of May and then ripen into bright red fruits by October. I call it semi-evergreen because about 1/2 the leaves stay attached for most of the Winter.

This is one of my favorite plants and I recently used it in a very fun project that turned out very well (despite the quality of the photographs). These will grow beautiful and provide the perfect screen for this deck and offers an alternative to the overused juniper and arborvitae.

2. Sweetbay Magnolia (Magnolia virginiana)

Sweet Bay Magnolia in Kansas City

Magnolias often come and go as peoples favorite plants. However, this one has and always will be my favorite for planting in Kansas City landscapes. It is better suited than many for our zone and grows luxuriously well. My favorite form is when it is grown as a multi-stemmed shrub. It has a striking upward growing habit that gives it a strong architectural presence and lends itself well to be a focal plant in landscape planting.

I have two of these planted as pillars on the front corners of my house. They have performed very well for about 4 years now and have grown taller than the roof of my raised ranch.

3. Hardy Banana ‘Musa Basjoo.

The Hardy Banana plant is a plant that grows VERY well in Kansas City. I have had them growing at my house for going on 4 years and a customer has had them successfully growing for over 8 years.

These pictures show them growing in my yard in early July. By September they had pushed leaves higher than the roof of the porch you can see there. That is approx 18 feet high.

Although these look very tropical they are easily grown even in our unpredictable KC winters. They will die back to the ground in the winter and begin to grow again in the spring. The more protection you give them the bigger they will get the following year because you will protect more of the plant – giving it a head start on next years growth. I try to protect several of the biggest plants so they will grow as large as possible the following Spring. I protect them by building 4’ tall cages around them and filling them with leaves. This si the secret to really big plants. However, even unprotected plants will reach 10’

Another bonus – they reproduce madly. You will easily triple your number of plants every year as new pups sprout around the base of the mother plant.

4. Walker’s Low Catmint (Nepeta x faassenii)

I would choose this plant as one of my all time favorite perennials to use as a llandscaper. Not because of how showy it it or how rare it is or for any ONE attribute. Rather, because it has so many very good uses and it has never let me down.

This plant has small bluish green leaves that are highly fragrant leaves that smells like mint. The plant grows in a mound about 1 foot high and 2 feet across. however after its first season in the bed you will not be able to tell its shape because it will have spread through runners and be taking up much more space than that. In fact this may be the only time I would not use catmint – is if you need it to stay perfectly contained because it is so hardy and likes to spread. The flower begins blooming in June. If about 3 weeks later you shear off the old blooms you can easily extend its blooming into late summer. The blooms are a pale lavender and spread across the plant like a purple mist.

It was named Perennial of the Year in 2007 for its versatility and hardiness.

5. False Indigo (Baptisia australis)

I have been in love with this plant since the first time I saw it in full bloom when driving past a very neglected garden in the middle of July. Everything else in the garden had died including what looked like remnants of stella d’ oro’s and some poorly placed care-free roses. I quickly took a mental note and the next time I was at my favorite nursery I bought a couple plants.

I was not immediately impressed. The plant just stood there for the entire season. The next year it was about the same. But, by the third year it had really taken off and is now one of the plants people always notice when they walk around and see that part of my garden.

Baptisia has since proved its worthiness in many designs and ahs often become a favorite plant to use in landscape designs. It does have it quirks though. Number one – it is a plant that you have to plant and leave it alone. it does not transplant well once it is established in your bed because of it unique rooting structure (which is also responsible for its durability. Secondly – I have found it is incredibly sensitive to any kind of sprays. In my incessant meddling I am always trying things that will supercharge my plants. During one of these ‘experiments’ I was spraying a mixture of compost tea and iron on few plant in my garden around the Baptisia – and it turned black over night – the entire plant. The plant recovered fully – but it took a while. I have since learned that any foliar spray will have varying degrees of the same effect.

6. Little Henry Sweetspire (Itea Virginica)

This shrub is a great plant that fits into almost every kansas city landscape in some part. In order for a plant to become a favorite of mine, it has to be versatile, tough and at least interesting in all season. Sweetspire does this. It is deciduous shrub that can grow up to 5 foot tall in a roughly globular fashion. There is a very similar variety call Little Henry’s Sweetspire that is nearly identical – but more compact. This shrub has two times of the year that it is a knockout. One time is in early June when it shows off its long beautiful blooms. It is equally beautiful in the fall when the foliage turns into a striking shade of crimson…and…the leaves persist well into mid winter.

7. Drift Roses (Rosa ‘Meijocos’)

I will have to admit that although I hate to admit it I do love Knock Out Roses. I was one of their first big proponents and had a bush that was kind of secretly handed to me before they were publicly being sold. However, in the last 10 years they have become victims of their own success and are now way over planted and used in every subdivision entrance, every front yard bed and around every park sign. Now I feel a little guilty when I reach out for the knock-out rose once again for the customer that says they want low maintenance year-round color. There just is not another plant that can match up in those situations – unless – you were looking for something smaller.

From the same breeders who gave us the knockout rose we now have the Drift rose. This is essentially a groundcover rose (around 3 feet high) with all of the great benefits of the knockout rose, but in a smaller package. It blooms from early spring until the first frost, it is disease resistant, and it is extremely cold hardy.

I find it works great to line a walkway with when you do not want the height offered by a knockout rose. It can also work great planted at the edge of a rocky wall.

I am going to continue this list – so check back soon – or better yet sign-up here to get regular updates.

Kansas City Landscaping dodged a bullet

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.

Snow is good for Kansas City’s Lawns and Landscapes

Kansas City has had a record snow storm this week. Gary Lezak reports that most areas received between 10 and 14 inches in Kansas City. Although snow can be a hassle for traveling and moving around in, it is GREAT for plants.

Not only does the snow insulate the plants crowns from widely swinging temperature extremes, it also will add important winter moisture applied slowly and evenly.

You can even help your plants out with extra moisture by choosing where you toss the snow when shoveling your walks and driveways. By piling it on flower gardens and around trees you will be giving them extra moisture. However, if you used any kind of deicer or snow melting product, be very careful as concentrating these in one area could be harmful. Here is a great article on using deicers around your plants.

About the only time snow can be damaging is if it stays around for weeks and weeks without melting it can cause some disease issues. However, in Kansas City we rarely see snow stick around for longer than a week before it melts away.

So enjoy the snow and rest well knowing that your plants are well taken care of while you enjoy them from the outside.

Why do they insist on piling it on?

There has been a near media blitz this year informing Kansas City Gardeners. However while looking at an Overland park landscape last week I saw more mulch volcanoes.

I can fin no excuse that there are professional landscaping companies out there who still continue to pile mulch around trees. It make me very sad to know that there continues to be companies and residents who are having there landscaping ruined by either ignorant or careless landscapers.

Here you can see the results

Notice how the bark has already started to rot away. The darker color indicated the bark that was dying and ready to peel off. Additionally, the picture doesn’t show it well. However there were also multiple insect holes in the bark under the mulch.

Planting Coral Bells in Kansas City Clay

The old adage – Plant a $5 plant in a $25 hole holds true in Kansas City’s Landscaping.

On a recent project I planted over 70 Hostas, Coral Bells and Astible in an existing garden. This garden had gravel already put down and the soil underneath was not great. Normally, when making a new bed it is best to amend the entire bed with high quality organic compost. However, this is not possible in a bed that already is covered with several inches of gravel. So you have to amend the planting hole. You have to be careful when doing this though. You have to make the hole quite large in comparison to the plant you are planting.

Start by removing the rocks from where you are going to dig the hole. Notice that the hole is about 3x as big as the plant itself.

The laws of geometry then say that you are not just increasing the volume of the hole by 3 – but closer to 9x the original plant container size so you will need to add a considerable amount of extra compost. I use a high quality compost made from landscaping debris. It is tested regularly to ensure its purity of toxins.

After mixing the compost with the native soils – carefully plant the plant.

With Coral bells specifically – Be careful of their crown and make sure that crown of the plant is carefully planted just below the surface.

Then slide the rocks back in place around the plant.

Each plant can take upwards of 10 minutes to plant carefully and correctly. So it truly is a $25 hole for a $5 plant. However, The long term growth and vigor of the plants will be worth it to the customer. However, with 70+ plants to plant – it is not a quick job.

Kansas City Landscaping sees Rash of Volcanoes

Its a purely human phenomenon – really. If you see a mistake repeated often enough then it becomes perceived not as a mistake, but as the way things should be done. This is being done in Kansas City Landscapes right now

This is the case with the dreaded Mulch Volcano. Mulch volcanoes are not a Kansas City landscaping phenomenon, they effect cities all over the US

.

: Mulch volcanoo aftermath

Despite recent public campaigns by The Johnson County Extension Office and the City of Overland Park, there are still instance found all over the city.

The above example was just yesterday ata very nice office park. I am sure that the manager of this office park paid good money to a “reputable” landscaping company to maintain their landscaping. However, what has now happened is that these trees have been forever weakened by this ignorant practice

When mulch is spread more than 2″ thick against the base of a tree several things happen — and none of the m are good. First, the mulch will hold moisture against the trunk pf the tree. This si dangerous because it encourages rotting and disease. It will also rot the bark away adding additional avenues for insects and disease to attack the flesh of the tree. Roots are also damaged by the moisture held in the mulch because they will grow upwards seeking this moisture. As they do they will begin to circle the trunk. These circling roots will eventually kill the tree byessentially strangling it.

How should trees be mulched then? Trees should be mulched 2″ – 3″ thick (about one finger deep) and all mulch should be pulled away from the trunk of the tree truck 2 or 3 inches. Think doughnut instead of volcano. How big you want the mulch ring to be is up to you. Ideally — it should extend to the drip line of the tree — but that is not always practical or aesthetically the best choice. However, a good minimum is a 6′ diameter.

Here is what a tree looks like when you peel away the mulch volcano after several years. This particular was at a new customer in Overland Park that I started working with this season. I did not pull the mulch away — it was done before he had moved in. You can see that this tree will NEVER be a beautiful specimen again and will likely die prematurely from earlier neglect.

Mulch volcanoo aftermath

Frost Hardiness of Kansas City Plants

Here are some general guidelines for the frost hardiness of plants in Kansas City Gardens

Vegetables

Hardy	Tolerant	Tender	Warm Loving
Asparagus	Beet	Snap Bean	Lima Bean
Collards	Broccoli	Sweet Corn	Cucumber
Endive	Brussels Sprouts	Tomato	Eggplant
Kale	Cabbage		Muskmelon
Kohlrabi	Carrot		Okra
Lettuce	Cauliflower		Pepper
Mustard	Celeriac		Pumpkin
Pea	Celery		Squash
Potato	Chard		Sweet Potato
Rhubarb	Onion		Watermelon
Rutabaga	Parsnip
Salsify	Radish
Spinach
Turnip

Annuals

Hardy	Tolerant	Tender	Warm Loving
Corn Flower	Black Eyed Susan	Aster	Ageratum
Ornamental Cabbage	Calendula	Nicotiana	Balsam
Pansy	Coreopsis	Petunia	Begonia
Primrose	Dianthus	Scabiosa	Celosia
Violet	Snap Dragon	Statice	Cosmos
	Sweet Pea	Sweet Alyssum	Impatiens
	Torenia	Verbena	Lobelia
			Marigold
			Portulaca
			Phlox
			Salvia
			Vinca
			Zinnia

Thank you to the University of Purdue for supplying information needed to create this informative chart.

Uh — Oh — Thats not snow either!

Ice on the powerlines is an ominous site — Suddenly I am a little worried. I would have much ratehr seena BIG snowstorm!

Kanas City landscaping about to be hit by major snow – maybe

Will it snow? I’ll leave that up to the experts at NBC Action News.

However, if it does snow, here is what you need to know for your plants.

Most will be ok. We have had a very seasonable march so the plants that are in bud and coming out of dormancy will be able to handle the cold. As long as the cold stays above 25 or so.

I do see an exception to some of the fruit trees in the area. i have noticed that some of them were beginning to bloom. These trees will likely lose some of their blooms.

I would wait to cover any plants until after it snows. The wight of the snow ontop of the covers will likely cause more damage than the temperatures.

Also, there is a risk if we have substantial snow that trees with leafed out branches or trees with blooms could catch enough snow to hurt cause their limbs to break. This could true for evergreens as well.

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Knock Outs are almost Maintenance Free

Step 1: Gather your supplies

Step 2: Approach the Naughty bush and begin cutting

Step 3: Wait for Growth

Related posts

1. Allegheny Viburnum (Viburnum rhytidophylloides ‘Allegheny’)

2. Sweetbay Magnolia (Magnolia virginiana)

3. Hardy Banana ‘Musa Basjoo.

4. Walker’s Low Catmint (Nepeta x faassenii)

5. False Indigo (Baptisia australis)

6. Little Henry Sweetspire (Itea Virginica)

7. Drift Roses (Rosa ‘Meijocos’)

I am going to continue this list – so check back soon – or better yet sign-up here to get regular updates.

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The old adage – Plant a $5 plant in a $25 hole holds true in Kansas City’s Landscaping.

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