Pests – Sticks & Stones

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Navigating the Boxwood Market Amidst Quarantine Regulations

As we enter our second season under the box tree moth quarantine, it’s time for an update on the restrictions. The short version is this…

The majority of our customer base CAN once again PURCHASE Boxwood from Christensen’s Plant Center.

If you need more details, keep reading…

In April of 2023, the quarantine of all Boxwood (Buxus) only included Lenawee and Washtenaw counties with some portions of Monroe and Jackson.  In July, it expanded to 10 counties; as of December 2023, 12 counties are included in the quarantine.

We are able to supply boxwood to all of the quarantine zone.  If you are planting in one of these counties: Clinton, St. Clair, Eaton, Ingham, Livingston, Oakland, Macomb, Jackson, Washtenaw, Wayne, Lenawee, or Monroe, you can stop into the Plant Center and purchase your Boxwood from Christensen’s. All we need from contractors is the installation address. We take care of the rest of the compliance.

If you are planting outside the 12-county quarantine area, you can still purchase from us, but they will need to be direct-shipped and some restrictions may apply. Talk to your Christensen’s representative about your options.

As a dedicated wholesaler of nursery stock catering exclusively to contractors, we know that the past year has been challenging for landscape professionals and business owners in our industry. The fluctuating zone has brought significant distortion to the market dynamics of this beloved shrub compelling many to seek boxwood alternatives.  While we do not wish to see the box tree moth spreading, the larger quarantine area does allow the business of boxwoods to return to a normal pace.  

We invite you to take advantage of the increased availability of boxwoods at Christensen’s. Our commitment to quality and compliance with state guidelines ensures that you receive healthy, robust plants for your landscaping projects.

For more information, Michigan State University has set up a website dedicated to the box tree moth. It includes articles and recommendations, along with contact information for experts on this subject.

Chris Nielson

Mulch Appreciated!

Spring is upon us and we are selling through our mulch at a mind-boggling pace. Hardwood mulch is incredibly popular with homeowners and contractors alike, but have you considered that there is an alternative? What if I told you that this aesthetically pleasing alternative not only suppresses weeds and smells good, it even inhibits several common pests?

Cedar mulch is all of these things!

Mulch, in general, helps the soil retain moisture by preventing rapid evaporation. It acts as a protective layer, keeping the soil temperature stable, and providing insulation for plant roots.

Cedar Mulch on a Driveway

The reddish-brown color of cedar mulch adds visual appeal to garden beds, walkways, and around trees. It complements shrubs and ornamental plants beautifully and can create inspiring contrast to accents on a home or commercial building.

Property owners and maintenance crews may find the battle with persistent weeds is much easier to win with cedar mulch, homeowners may enjoy a landscape that is easier to manage and maintain.

Cedar mulch decomposes slower than hardwood mulch. This longevity translates to cost savings for homeowners. They won’t need to replace it annually, making it a more sustainable and budget-friendly option.

Cedar mulch is like a natural bug barrier for your garden. The secret lies in the aromatic compounds found in the wood, including cedrol, thujaplicin, and thujone. These compounds have pest-repelling properties, making cedar mulch an effective deterrent against insects such as roaches, moths, ants, and termites.

These compounds have been tested for efficacy against gnats and are even available extracted as a pesticidal spray for indoor plants.

The next time you’re discussing mulch options with your clients, consider emphasizing the cedar advantage!

Looking for even better weed control? Try putting Treflan granular pre-emergent down before the mulch.

Matt Millington

Continuing the Tradition: Deer Hunting

I was going to write about compost. I am such a huge fan. That rich nourishing smell of the earth, the way the steam rises off a warm rich freshly turned pile. Something I love and know a lot about! However, being that the release of this article (Nov 7), I thought I would try writing about something I know absolutely nothing about! Deer Season! That time of year when beards start to grow, the gear gets brought out, rifles get sighted, PTO that has been saved is about to be used, and the nursery is almost vacated of staff and customers.

What gives? I thought I would do a little research and see what all the hype is about. And boy did I learn a lot!

Of course, my immediate focus was ‘hunting and the challenges to the landscape’.  However, as I was educating myself on all things “whitetail”: scouting, the Rut, scrapes, rubs, food, disease, etc., I was totally intrigued by this thing called “hunting”! I get it!

Even though I couldn’t shoot or use a bow, the opportunity to be in the woods, the excitement in the air, and the camaraderie between fellow hunters must be an awesome experience. So why the decline in hunters? It was interesting to read about the decline and the ripple effect it has on the economy.

Public opinion has had a direct effect, and this year had the biggest decline in 30 years. Demographics have had a huge impact on the approval rating. Only 65% of African Americans approve of hunting, 61% of Hispanics, and 69% of people 18-39. The highest favorability was those who hunt regularly, shoot recreationally, fish, are male, caucasian, live in the Midwest or rural areas and are 35 years old or older.

The decline of hunters has vast funding issues for the state government. Fewer licenses being sold hurts state and federal programs. Hunting pumps hundreds of millions into conservation efforts. Unfortunately, without that funding, there is a less detailed approach to many programs. Most importantly, controlling and managing the herd!

As much as I like hearing my hunter friends bragging about that 8-point buck, it seems the responsible approach to managing the herd lies with the does. With the decrease in hunters, the deer population is rising. This increase in the deer population has many great concerns.

According to Michigan.gov, 58,000 car related accidents resulting in 11 deaths occurred in Michigan in 2022. The cost of repairs can be in the thousands or even result in your vehicle being a total loss. Keep in mind that most of these accidents have been reported on two lane roads, and when the deer are at their most active, early dawn or at dusk.

Deer management is important for improving and maintaining forest health. Deer like to eat saplings, seedlings, and native plants, clearing the way for invasive species to spread into highly populated areas. Decades of over browsing have left many forests with the inability to regenerate.

Disease is also a risk of overpopulation. CWD and other diseases have been responsible for large die-offs. It is important to maintain herd size for the safety of the public and hunters.

I could certainly continue in many different directions. I could go on about all the cool clothing and garb, best practices, safety, and even about programs aimed at building renewed interest in the sport. There is so much more to the sport then picking up a weapon and heading in the woods. Educate yourself, respect the landscape, and be mindful of the footprint you leave behind. Have fun and be safe!

But, most of all, good luck!

Joanna Mueller byline

The Redeeming Qualities of Mosquitos?

Bzzzzzzwhzzzzz….SWAT!!

Another ’skeeter gets smacked, leaving your blood and her guts on your sleeve.

We all love to hate them. They’ve ruined countless outdoor summer gatherings, left me with sleepless nights whilst camping, and can make working outside a nightmare. Do these flying parasites actually do any good for this world?  Should we wish for a perfect eradication method so we never have to hear that buzzing sound again?

Mosquitoes are pollinators. Flower nectar is actually their main source of food. Many of our garden vegetables enjoy being pollinated by mosquitoes, as well as wetland and prairie plants. Are you a fan of chocolate? If so, perhaps you will look at mosquitoes a little differently, as they are the main pollinator of cacao trees!

The females only need a small amount of blood to develop the proteins casings for their eggs. The rest of their time they spend flying around your garden and surrounding areas looking for flowers.

Mosquitoes are a food source for bats, dragonflies, and several birds, such as hummingbirds

The impact of mosquito larva in aquatic environments is difficult to measure, but is significant. They spend their time eating away at detritus matter, cleaning up ponds of decaying leaves, expelling their waste for beneficial microbes to consume.  Mosquito larva biomass makes up a large portion of some fish’s diet. Backyard pond fish and all smaller wild fish eat mosquito larva, providing a strong base in the food chain that feeds larger game fish for sportsmen.

I came into this topic with my countercultural tendencies, hoping to espouse the benefits of these winged blood marauders.  So are mosquitoes a net benefit to us, as humans?   Apparently, the jury is still out.  Biologists hypothesize that if mosquitoes were to disappear similar organisms would quickly move into their place in the food web.   Mosquitoes have spread over six of our seven continents over the past 100 million years. “Why?”   I guess the question is really “Why Not?”.  They have proved to be a successful, abundant insect, despite our crude methods of eradication and suppression. They have earned a place here, as every creature has, in their place and time.    Will I still swat the little suckers if they land on my neck? ABSOLUTELY! 

If you want to have fewer mosquitoes in your yard keep your grass well-cut and thick bushes away from your entertaining areas. (This helps with ticks, as well)  Look for places where water may collect and remain still for a period of time so they cannot breed in the puddles. Eliminate empty pots and flip wheelbarrows upside down so they cannot collect water. Childrens toys,  buckets, garbage can lids, even plastic bags that have blown into the yard may collect water.   Fix lawn drainage problems for your customers.  It only takes five days for a mosquito to develop from an egg to a biting adult, so consider any standing water a breeding ground.

Matt Millington

To Bee or Not to Bee

Bee Illustration

Bee-lieve it or not, I have never, in my life been stung by a bee. In all my years working here at the plant center, I have managed to avoid that painful sting. Often by running around like a crazy person, screeching. The fear of the unknown is probably worse than the actual pain. As scared as I am, there are so many benefits to planting pollinator-friendly varieties that I would like to share with you. The pollination of food-grown crops, the growing number of endangered insects, easy maintenance, and low-cost gardening are just a few. Pollinator plants attract bees, wasps, butterflies, bats, and even hummingbirds. These benefits far outweigh the fear of the sting.

Macro of a Bee on a Honeycomb

Pollination is the transfer of pollen from the male parts of one flower to the female parts of another, within the same species. Pollination results in fertilization, which is essential to fruit and seed production. This process is accomplished by insects, birds, reptiles, and some mammals. Fertilization is essential in food-grown crops such as fruit trees. Approximately 75% of the world’s flowering plants and 35% of the world’s food-grown crops depend on pollinators for their success. That’s roughly one in every three bites! That makes pollinators an essential factor in the global food web.

Another important reason to grow pollinating plants is the declining number of honeybees and other pollinators. This is largely due to human actions such as pesticide use, urbanization, emerging pathogens, parasites, and predators. US beekeepers are losing up to 30% of their colonies each year. While there are still over 2.88 million honeybee colonies in the US, some species are still considered vulnerable, endangered, or critically endangered. 

Other pollinators also in decline are Monarch butterflies. This is largely due to habitat degradation and limited access to Milkweed on their migration routes down south. Planting Milkweed could be an easy start to help these populations. Asclepias Tuberosa and other varieties can always be found right here at Christensen’s. The good news is that if we are the problem, we can also be the solution, so planting pollinators is an easy way to help these declining species.

Asclepias Tuberosa
 Allium Millenium
Echinacea Lemon Yellow
Buddleia CranRazz
Lavandula Sweet Romance

Now that we have gone through the benefits, and environmental reasons to plant pollinators, you might be asking WHAT SHOULD I PLANT? A good start would be native plant varieties. Here at Christensen’s, you can find Asclepias Tuberosa, Aster, Echinacea Purpurea, Liatris Blazing Star, and Lobelia Siphilitica. If we don’t carry it, we can always special order these native varieties for you! These native varieties are usually low maintenance and won’t break the bank. Many of the perennials and shrubs we carry regularly here at Christensen’s make great pollinators too! My closest bee encounters have been on our Agastache ‘Blue Fortune’. Come summer these are FULL of bees, making them an excellent choice. Allium, Buddleia (Butterfly Bush), Coneflower, Lavender, Monarda, Rudbeckia, Sedum, Phlox and Rudbeckia are great options, too, and are always found on our perennial lot. Other things you can do to ensure pollinator success is to plant in full sun, provide long-lasting blooms by planting varieties that flower at different times, plant in groups, and by trying to avoid insecticides.

Lobelia Monet Moment
Liatris Kobold
Echinacea Salsa Red
Sedum

Pollinators are important for many reasons. Global food production, making sure invaluable insects endure, and helping our environment, and the important ecosystems within it thrive, are just a few. Planting pollinators is cost-effective, low maintenance, and will help you feel that you are doing your part to preserve our valuable planet. Just try not to get stung, I’ve heard it hurts!

Molly De La Rosa Author

A Little Love for Snails & Slugs… But Mostly Prevention and Solutions

Giant Snail

In every lovely garden, there live lovely creatures. Sure, most people wouldn’t find loveliness in critters like slugs and snails. Despite their proven reputation of treating gardens like their personal buffets, I have always been fascinated by them. Let’s face it, they are cute creatures. The leisurely way they move about, the cartoon-like features… there’s something special about them. That being said, they are a pain and can be detrimental to your job site. This article will provide you with some tips on how to keep them away from your plants without harming them.

Snail wandering across a person's hood

Slugs and snails are part of the Gastropoda, combination of Greek words gastros (stomach) and podos (feet), under the phylum mollusca (mollusk). Is there a difference between the two? Aside from the obvious shell that differentiates them, not much. Snails tend to be slightly faster than slugs, but other than that, they are quite similar and will eat as much as the other.

Racing Snails at the start line

While they are notorious garden menaces, they are also helping your landscape as well as feasting on it. Slowly but surely, slugs/snails will break down garden debris and turn it into nitrogen rich fertilizer that enhances soil nutrition (similar to worm composting). Not to mention, albeit a bit morbid, they are a natural food source for other insects and critters such as spiders, birds, frogs, snakes, and toads.

Snail on Hosta Plant

What kind of plants do they like to eat? Anything. They don’t discriminate. However, they usually nibble on the tender leaves and stems of seedlings.

The big question is, what’s attracting them to your landscape? Slugs/snails tend to dry out quickly, so they love wet or damp soil that will keep their jellied mollusk bodies hydrated and happy. If you have incorporated mulch into your job site, that would be another reason why they are taking up residence as mulch tends to retain moisture. Mulch is beneficial for many reasons, so to help with this I would suggest keeping the mulch away from the base of the plants.

Slug on a pot rim with plants

Since their main form of transportation is crawling, their sensitive bodies will avoid rough terrain that will irritate their skin. I would suggest creating a barrier around the plants with natural items such as coffee grounds, wood ashes, sand, or eggshells to repel them while simultaneously fertilizing the plants.

Three Snails in a Row

Garden debris is a perfect environment for slugs and snails to thrive in, so cleaning debris quickly after the soil thaws in the spring can help. They also tend to lay eggs in debris as well, as it’s a dark, damp, hidden place. If you are dealing with a slug infestation, it is likely that you will find eggs. They are small, jelly-like balls stuck together in slimy clumps. They vary in color but are usually white or translucent. They will typically hatch anywhere from 2 weeks to 100 days depending on environmental factors. Slugs will breed all year round, but peak months of egg laying are from March-April to September-October. To prevent more generations of slugs, rake and turn over soil in areas that have been untouched. Another method is to pour slightly soapy or salty water on identified slug larvae. This will act as a natural poison without harming your plants in the process. You could also simply pick them up using a glove and discard them that way.

Big Slug on a glove at Christensen's

While I personally love slugs and snails, not everyone shares the same enthusiasm. If you run into some of our mollusk friends this season, hopefully you find some of these tips helpful to safely discard them from your job sites while maintaining the safety of the plants.

Alex Kleinschmidt 2023