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Alliums – your secret weapon for all season color

Allium Globemaster

It’s always hard for me to think "fall bulbs" in August. It’s 90 degrees and our perennial lot is in full bloom. The thought of bulbs pushing through the cold, wet landscape of spring is exciting, however that payoff is so long off! Hmmm, so how to wrap my mind around summer blooms, fall plantings, and springtime? I came up with a “genius” idea. Alliums! Bulb Alliums, perennial Alliums. One family blending together for a full season of color, texture, and beauty.

Early Order Bulb Program

So here’s the plan. Starting with our “Early Order Fall Bulb Program”, choose your Alliums.

Allium 'Purple Sensation' is deep violet, 'Azureum' is blue. Both range in height from 24”-36”.

The large 'Gigantium' and 'Globemaster' are both deep purple with a height of at least 3’ and 5”-8” flowers. All four are pest resistant and bloom May-June.

Allium Purple Sensation

Then the perennial Alliums. As those showy blooms from the fall-planted Alliums die off, the summer Alliums take charge. Allium 'Summer Beauty' blooms mid-June-July with 1 1/2” lavender flowers and shiny dark green foliage. The rosy-purple 'Millennium' kicks in July-August with an average height of 15”-18”. August and September follows up with 'Blue Eddy', which has lavender-pink flowers, it is the shortest with a height of less than a foot. Although Alliums prefer full sun they will take light shade, and they are pest and deer resistant.

Allium Summer Beauty

There are hundreds of varieties of Alliums. I have showcased seven, ranging from deep purple to lavender to blue. All in different heights and textures. For a soft palette you can add light yellows, pinks, and whites and for a strong, vivid, more contrasting look, choose reds and brighter yellows. But whatever your color choices you can’t go wrong with a plan that lasts all season.

Don’t forget your Bulb Tone! This is a great fertilizer to include when planting any bulb. For details on our Early Order Bulb program, click on the graphic above!

Joanna Whitt

New landscape plants to try

aronia_low_scape_mound

Our industry introduces new plants every year, and it's hard to keep up with them. Here are a few recent cultivars that you may want to check out for your next landscape project.

First is the Proven Winners Aronia Low Scape® Mound chokeberry. Aronia has been receiving a lot of interest lately as it is a native plant, and this one is nice because it only gets to about 24" and grows in a neat mound. Its white flowers bloom in late spring, and it also gives you a beautiful fall color. This plant is also quite deer resistant.

Aronia_low_scape_mound

Second is the Golden Pacific™ juniper. This evergreen gives a bright burst of yellow throughout the year.

The texture is different from most junipers, being bold yet low-growing.  It's a great plant to use for color without relying on flowering plants, and a nice change of pace from typical green ground cover.

There is also a blue-green variety called 'Blue Pacific'. Both are shore junipers, which are relatively salt tolerant,  making either a candidate for planting near sidewalks and driveways.

Juniper Golden Pacific

Third is the Physocarpus Tiny Wine®. This is another Proven Winner, smaller than other varieties of ninebark commonly available. It grows to a height and width of just 3 to 4 feet. It blooms with tiny pink flowers in the spring, and keeps a nice fine-textured maroon foliage all season long.

Physocarpus Tiny Wine
Physocarpus Lemon Candy

The last recommendation I have is Physocarpus Lemon Candy™. This plant has outstanding foliage that starts out bright yellow and matures to yellow-green. It does not scorch in full sun, looking good all season. It grows to about 30" tall and makes an excellent color accent among the standard greens and purples of the common landscape.

The ninebarks are an up-and-coming group of landscape plants. They are tough yet good-looking and adaptible to many sites. 

Take a look at these plants and I think you'll find they have a place in your landscape designs.​


Pedro Gutierrez

Water: too much – or too little?

Mud puddle

WATER, WATER, EVERY WHERE
And all the boards did shrink;
Water, water, every where,
Nor any drop to drink.

Some may recognize these verses from Samuel Taylor Coleridge’s “The Rime of the Ancient Mariner.” Even if one does not, it is worth noting this work, now approaching 200 years since it was written, was one of the first works advocating a more responsible use of our natural resources. The mariner’s senseless killing of an albatross leads us to question how we use and treat the fauna of this planet. Much of what is written could be applied to the flora as well.

If we remember back to this spring, days of rain created saturated soils and standing water. This did not bode well for some plants. In Coleridge’s story the sailors had no fresh water to drink, but here our trees and evergreens had more than enough fresh water, yet still could not absorb that water. Why not?

Stranded in the equatorial waters of the Pacific all but the ancient mariner eventually die from heat and lack of water.

The overabundance of water and saturation of the soil interfered with a plant’s ability to respirate and to absorb nutrients and water through its roots. The cold, wet spring also encouraged the growth of fungi, like Phytophora, in the soils which can cause lesions on the roots, which, in turn, interferes with a plant’s ability to metabolize whatever it needs. This is called root scald. At first glance some trees looked like they were wilting, in some respect they were, their roots were unable to take in nutrient and moisture causing the plant to collapse. Usually if a plant is dry leaves will wilt, turn yellow from the inner and lower branches, and the plant will begin to drop foliage to compensate.

When a plant is too wet it will begin to wilt only to have the apical branches turn reddish -brown but not separate from the plant.

overwatered and dead

How can one prepare for weather extremes? First, there is more than one way to plant a tree. Common sense goes a long way! Planting depth, the type of planting media, and choosing plants that will tolerate different soils are basic questions any landscaper should be considering for every site. It isn’t rocket science, but there is a lot more to landscaping than digging a hole and throwing the plant in!

Does the site drain well? If not, should I elevate plants in beds that will cause excessive water to run off? Choosing plants with higher metabolisms, plants with dark, more fibrous roots that can handle periodic or ephemeral flooding and including beneficial mycorrhizae in the planting media to protect root nodes will lead to transplant successes. If your planting losses are over 10%, is it due to lack of planting experience and good practices, or is your company guilty of cutting corners and careless installations? Even if you are not warranting your work, poor workmanship will catch up with any company eventually.

healthy tree

If heavy plant losses are “an albatross around your neck,” be a “sadder and wiser man,” and question practices and losses. Remember “the best gardeners have killed just about everything!” Becoming a more responsible contractor and pursuing best planting practices Will reduce losses and increase the bottom line. It pays to care!

“...but this I tell to thee…
He prayeth well, who loveth well
Both man and bird and beast.


He prayeth best, who loveth best
All things both great and small;
For the dear God who loveth us,
He made and loveth all.”

Jeff Good

Five steps to quality

little wilt on these oakleafs

What goes into Christensen’s Plant Center having the freshest, most viable stock?

It began years ago when Lee Christensen (and probably before him his dad Pete) sought out material from the finest growers in North America. When Lee passed on the company to Tim Joy and Frank Huber, that sourcing experience of finding nice material at a good value was part of the deal. Over the years Christensen’s has cultivated relationships with a number of top-notch vendors, and our current Investment team of me, Kim Roth and David Dermyer as well as Frank Roth at Rushton Farms are focused on nurturing and expanding those relationships.

checking the shipping documents

Secondly, the material is shipped by trucking companies we broker ourselves, then unloaded by our highly trained (and sometimes overworked) receiving staff. They can unload 8-12 trucks in a day and 1000’s of boxwood and yews in a week. All plants are placed in our facility under irrigation, both in the yard or the field. Maintaining that irrigation system is a top priority for our yard manager Chris Nielson (assisted by Rigo).

Third, the material is evaluated and approved as it gets unloaded or shortly after. If we see anything wrong, it gets rejected. If I wouldn’t buy it for myself, why would I sell it to you? Sub-par material is often put right back on the truck.

inspectiong some boxwood

We make sure that plants are viable, rooted, and healthy. Plants that don’t pass this evaluation are removed from inventory immediately. Rarely, we receive trees in the spring that are rejected for quality but are not able to be shipped back to the vendor. We put the best of them in our “2%” area, and offer them to you at shockingly low prices.

We do want to be fair to our vendors, so if material arrives early in the year, we give the plants till early June to come out of dormancy. It’s amazing how some will take that long (like trying to wake up a teenager on a Saturday morning).

Finally, the other main force for refreshing our stock is you, our customer. Quick stock turns are key. If you’re busy planting, our staff is busy doing what Lee, Tim and Frank have trained and asked us to do. We are experts at finding quality material and are ready to provide what you need for your installs.

We know your success is our success, and we are glad we can help.

Dan Alessandrini

Beware the late frost!

Hoarfrost

Barring tornadoes and earthquakes, few weather occurrences strike fear into the hearts of the avid gardener, landscaper, and nurseryman like a late frost. We have no control over Mother Nature, if she decides she wants to paint everything white on a chilly spring morning. But there are things we can do to protect our plants.

Frost occurs on clear still nights. In late spring a light frost (28-32 F) can harm tender plants, magnolia blooms, and can kill annuals. A hard frost (25-28 F) can kill root hardy perennials and harm new leaves on woody plants. Below 25 F can harm many plants in late spring, mainly due to desiccation. Since temperatures can vary a few feet off the ground, smaller plants can be affected by a frost even if your thermometer reads above freezing. Most weather stations and apps will report a frost advisory, so pay special attention if you have vulnerable plants. Making sure to select plants that are suitable to the Hardiness Zone where they are being planted will reduce the risk of damage, and reduce anxiety over frost.

Hoarfrost

Types of frost include Hoarfrost (feathery white frost crystals), Rime (fog or dew frozen into a glaze), and Black Frost which is when there is no actual frost formed but the low temperatures are still harmful to the plants.

When is it safe to stop worrying about frost in Michigan? That depends on where you live. According to the Climactic Data Center website, in Ypsilanti it’s May 5th, in Detroit and Ann Arbor it’s May 10th, in Flint and East Lansing it’s May 28th, and if you live in Tahquamenon Falls it’s July 9th. Unfortunately nature doesn’t consult the Climactic Data Center website and can easily send a harmful frost your way beyond these dates, so be vigilant in late spring.

Some trees that are susceptible are early budding evergreens such as Black Hills spruce and Concolor fir, and deciduous trees including Sycamore, Lilacs, and Honeylocust.

So what can you do to protect your plants during a late frost? If you haven’t planted them yet and you have the space, bring them indoors (a garage, shed, or enclosed porch will do). Smaller plants can be covered with overturned pots or buckets, and larger plants can be covered with fabric, old bed sheets, or burlap (be prepared and have these items on hand before you need them). Another good method is to use your irrigation system. Watering your plants before and during below freezing temperatures helps prevent desiccation, and the water has and insulating effect on the plants and soil.

What if your plants are damaged by frost? If they are annuals or garden vegetables, they are probably toast. The effects on most landscape plants is cosmetic and plant survivability is good. The healthier the plant is, the more reserves it has to push new growth, so it is important that the plant is in the right environment and is well fed and watered.

Hopefully we don’t have to fret much longer about frost as the warmer months head our way, but don’t let your guard down yet. The Late Frost will get you if you do.

Frost damage
John Mollon

A New Look at an Ancient Plant

Autumn fern
What kind of plant has branched stems and leaves, neither flowers nor seeds, can grow in a variety of locations and has been with us for more than 300 million years?

FERNS!

They are an immense and diverse group of plants that are more versatile than many people may think. Not all of the many ferns hardy to our Zone 5 climate need be pictured as only woodland delicacies.

Many varieties are suitable for, believe it or not, rock and water gardens as well as sunny and dry locations. I have personally seen happy colonies of Ostrich Fern (Matteuccia pensylvanica) and Japanese Painted Fern (Athyrium n. Pictum) growing in full sun, provided (THIS IS IMPORTANT!) the soil is organically rich and consistently moist.

A few more sun-tolerant varieties include the Hayscented Fern (Dennstaedtia punctiloba), Lady Fern (Athyrium felix-femina), and Cinnamon Fern (Osmunda cinnamomea).

When established, Ostrich, Lady and especially Hayscented Ferns will also be able to tolerate drier soils.

These ancient beauties can be deciduous or evergreen and exist in many textures, colors (think Japanese Painted Ferns and Autumn Ferns) and sizes. Even better, most are resistant to rabbits and deer.

Their tropical look can soften up areas around a patio and the edges of hardscaped portions of the garden.

They truly are worth a second glance, beyond the forest setting, as long as proper research is done to choose the correct variety that should be used.

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