I’ve been planting a wide variety of nursery stock from the moment I had a yard to plant in. I bought my first home in the 80’s and after ripping out pretty much everything that was there – it was time for a rehab – I started bringing home my favorite plants from our vast inventory here at Christensen’s. That employee discount got QUITE a workout, let me tell you. Sure, there were failures, for example my attempts to grow daphne, oxydendron, and a succession of acer palmatum, but in my mind a dead plant just opens up a spot to plant something new.

However.

There are some plants I NEVER should have planted. They all have one thing in common – aggressive, invasive growth. It’s not an accident that several of them are vines, plus some perennials that spread underground and come up yards away from the perfect spot you chose for it then proceed to colonize the rest of your yard, and the neighbor’s yard, too. Word to the wise – avoid “plant swaps”. There is a reason people have excess to trade.

I didn’t plant any bamboo, luckily, but the Japanese anemone had to come out, as did the Ribbon grass (Phalaris). I didn’t plant the Aegopodium or the Convallaria, but only was ever able to eradicate the Aegopodium as the bed was contained by the concrete drive. We built a giant sieve out of hardware cloth and I dug up the whole bed and got every scrap of root. The Lily-of-the-valley persists to this day among some hosta I transplanted to my new house, wish me luck.

The beautiful Porcelainberry vine I hid behind the garage is probably still sprouting back in spite of repeated attempts with spade and sprayer, and the gigantic Sweet Autumn Clematis that grew to cover the entire shade structure is likely still trying to swallow Plymouth Township. But it sure was pretty and smelled fantastic. But don’t plant one. It’s horrible.

The number one worst plant I ever planted was the Trumpet vine. Fond memories of plucking the orange flowers and tasting the nectar inside (sorry, hummingbirds) from my Grandmother’s yard at the original nursery on Ann Arbor Road gave me the bright idea of planting one in a tiny spot in the side garden of my postage-stamp yard. I even extended the chain-link fence six feet higher to give it a nice trellis to climb on. Visions of hummingbirds filled my imagination, and I figured in a year, maybe two – OK, FINE, three – I’d be a major stop on the hummingbird highway.

Hah.

The seasons passed with not one single flower. Ever. But the VINE? It ran underground and started coming up randomly, all over the yard. Ten, twenty feet away, no problem. Digging it up was futile. It’s immune to Roundup (apparently). I tried to get rid of it for ten years.

I finally moved.

These days the only vines you will catch me planting are Clematis (which randomly die for no good reason) and Hydrangea petiolaris, which is always well-behaved. A mature one came with my new house, and when the tree it was climbing on died, we left most of the trunk standing, because nobody messes with my Climbing Hydrangea. You really should plant that one.

Is this a trick question? Not really. Every year, in mid to late spring, turtles start to move. The males are looking for partners and the females are looking for a good place to make a nest for their eggs. Unfortunately for a lot of them, this means crossing busy roads and a lot of them don’t make it. Sun-warmed pavement and sandy road edges combine to attract these tiny travelers so look sharp as you drive – what might look like a rock in the roadway ahead could well be a turtle trying to cross.

Michigan is home to about ten species of turtles, nine native and one introduced. The most common one is probably the pretty painted turtle, and most of us have seen a snapping turtle. We also have musk turtles, map turtles, spiny soft-shell turtles, spotted turtles, and the introduced red-eared slider. Three of our turtles are quite rare and if you’ve seen one, congratulations! They are the wood turtle, the Blanding’s turtle, and the Eastern box turtle.

My pond is home to a small colony of painted turtles and two summers ago there was a pretty big snapper, but I think she has moved on. I’ve found turtles in the yard trying to dig a nest for eggs a couple of times, but I have yet to find any baby turtles of any species. A shocking number of nests are dug up and the eggs are eaten by raccoons and other animals, often just days after being laid. A lot of animals eat baby turtles, too. It can take 20 years for a turtle to get old enough to breed so if I see one trying to cross a road you can bet I am going to pull over and try to help it.

If you do try to help a turtle cross a road, always carry it in the same direction it was heading, and set it as far off the road as you can, 10 or 15 yards if possible. Never lift a turtle by it’s tail, and don’t be tempted to move it to another location – they know where they live and can be killed trying to get back home.

Locally to me is the University of Michigan Edwin S. George Reserve, a fenced 1300 acres where researchers are studying the endangered Blanding’s turtle. Because they have been able to tag individual animals, they have been able to age one particular female as 83 years old (in 2016). I have been lucky enough to have seen a Blanding’s come through my yard and it’s a thrill every time. Now if only I can find a box turtle someday I can die happy.

If you're looking for additional resources for turtle information, please check out the Michigan Department of Natural Resources.

I don’t do trees. Personally, I find them scary. Not just because they can fall on your house, in your pool or knock out your power. They are a force to be reckoned with! One time a tree came down on a house in my neighborhood and I was relieved when it didn’t totally crush the house.

Trees with weak limbs are definitely on the scary list. Pear. Silver maple! And of course, the tree that takes the scariest contest win every time. Weeping willow. Seriously, every scary movie has a weeping willow in it somewhere and as soon as you see it the creepy music starts playing. Oh, but wait. Google "weeping willow" and you get pics like this one from a horror novelist site. 

You heard the music didn’t you?

Maybe the weeping willow isn’t THAT scary, but how about this horrifically misshapen weeping beech at the Mt. Auburn Cemetery in Massachusetts? Honestly it looks like it wants to grab you by your hair. Massachusetts has plenty of spooky - ever hear of the Bridgewater Triangle?

Or check out the Burmis Tree in Alberta, Canada. It died in 1970 after living probably 700 years. Amazing and weird – yep, but the story goes on, this ancient limber pine stayed standing for another 28 years until it was knocked over by a wind storm. Now for something straight out of Steven King: the locals propped it back up and – like a zombie – it still stands on it’s cliff top for all to see.

Examples of scary trees like these exist all over. Scary trees don’t bother you? How about haunted trees? Let’s start with The Island of Dolls in Xochimilco, Mexico, haunted by hundreds of creepy whispering dolls hanging from the trees. Or the Hoia-Baciu Woods in Romania. Did I say Romania? I meant TRANSYLVANIA. This forest has a haunted circle where no trees will grow. And then there is the Freetown-Fall River State Forest ALSO in Massachusetts, aka the Cursed Forest, site of murders, supernatural events, and Sasquatch sightings. Something for everyone, really.

None of the examples above have given you the chills? People can find faces in grilled cheese, why not in trees? And feeling creeped out and scared can be easily caused by too much Halloween partying. Let’s return to the easier facts then.

You just can’t make this up. Barbed wire? No… thorns on a tree!!! Scientific fact – this is your old friend the Honeylocust sporting these daggerlike thorns. Thank a nurseryman for breeding the thorns out of them for us. This photo makes me think of some evil creature in a horror movie dragging a club with thorns – I can’t remember the movie but some horror slasher from the ‘80s.

But it could be worse – check out the spikes on the trunk of this charming specimen. Introducing the White Floss Silk Tree, Ceiba insignis. I am happy to report that it is NOT HARDY HERE.

(We are going to pass on cactus with their evil kitten claws, for now)

With all that said, I love October. Keep your pumpkin mocha – give me a good scary movie and some popcorn. I do love to be scared, just in a different way.

...through "Guerrilla Art"

I have a friend who earns his living in an unusual field – he is a graffiti artist, commissioned to place his art on buildings. When we met, he oversaw pest management at the greenhouse we both worked at. Since then, his hobby has become his passion and livelihood. He has travelled the country splashing his art on the walls of Miami, Chicago, Kansas City and more. If you’ve been in Detroit or Toledo, you may have seen his work.

I’ve always thought of landscape color plantings as a form of “Guerrilla Art”, which is a term applied to certain forms of street graffiti. There are a lot of similarities if you think about it. Graffiti and landscaping are out in public space for everyone to see and enjoy (or critique). Also, the color theory needed for public space is the same. Both need to consider sight lines for how the art will be viewed. Both need to adjust for mere moments of attention versus minutes or hours of retrospection in a museum or walking garden. If people are speeding by on a freeway, the audience needs to be able to see large blasts of color to interpret the art. Bigger and bolder is most often better. And planning for surroundings is essential to get the cohesive aesthetic the artist is trying to achieve in the outdoor arena.

Do you consider yourself an artist? Most landscapers I know would not. However, it’s hard to deny that the masterpieces they create in yards and public spaces are works of art. I would argue that the medium you use is the hardest to work with, since it is living (or must incorporate the living, if you’re creating a hardscape). Further complicating your living artwork is timing. If you work in annuals, this is less of an issue, but perennials, flowering shrubs and flowering trees all need to be installed with their bloom season in mind. Perhaps you should start listing “Artist” on your business cards… or “Guerrilla Artist” if you want to be edgy.

When I met my friend, he was in a phase of his life where he didn’t express to others that he was an artist, but the transition has transformed his work into his passion and he can’t hide his creative prowess any longer. Obviously, we don’t all need to quit our jobs and become graffiti artists to capture or recapture our passion. We can continue to be artists in our current jobs and turn our love of landscape into artwork the public can enjoy.

For some helpful color theory tips to elevate your art, check out Makenna’s article from last year.

Okay, so the title may be a little hyperbolic. Biotechnology is only one tool that we can utilize to reduce food insecurity and malnutrition worldwide. But there have been many roadblocks preventing biotech from becoming widely used, most of them political or financial in nature.

The genetic modification of plants has been occurring for millennia. One of the earliest known cultivated plants is the banana, purpose-grown for 10,000 years.

The original wild banana of Asia bore a dense, seed-heavy fruit that was difficult to eat. When naturally occurring seedless hybrids of wild varieties were discovered, people soon began propagating these by cuttings and the seeded varieties were abandoned.

The Arctic Apple is a great example of genetic modification in the commercial market. In 1996, Okanagan Specialty Fruits was formed in British Columbia. The purpose of the company was to explore opportunities for genetic modification in apples. They developed existing technology that was used to stop browning in potatoes to work on the enzyme that causes browning in apples. In 2002, after successful trials, the Arctic Apple was introduced to the market. This apple does not turn brown when sliced! Consumers are happier with the appearance of the apples, and the removal of the need to treat apples to stop browning lowers production costs.

Since the early 20th century, scientists have been engineering genetically modified rice to help solve malnutrition and famine in the developing world. At last estimate, around 125-130 million preschool aged children in the developing world suffered from Vitamin A deficiency due to malnutrition. The Humanitarian Golden Rice project was developed to help combat the lack of Vitamin A found in their diet. Scientists engineered the rice to synthesize Vitamin A in the starch tissues. The Project has faced at least ten years of trials and delay due to the extensive regulation surrounding Genetically Engineered species. Genetically Engineered species have undergone much more testing and is precise and predictable when compared to traditional breeding methods which have gone largely unregulated for years.

I sincerely hope that global regulations loosen up a bit in the coming years so that those who researched, executed, and tested these wonderful modifications have a chance to actually help others the way they intended to. Maybe one day the world will welcome innovation rather than treat it with suspicion and hostility.

How's everyone doing? I think we are now past the worst of the summer heat but to be honest I was ready for fall weeks ago. We may like to complain about the weather but when you are out in the hot burning sun day after day I think it's justified. Congratulations on making it through the dog days! Labor Day is the traditional end of summer but you and I both know there will be weeks of beautiful - even hot - weather before we trade sunscreen and Gatorade for hoodies and Carhartts. But today, let's get out of the sun for a minute and do some shade gardening.

I'm a big fan of shade gardening, and the plants that thrive in shade and partial shade. I used to have an enormous Hosta collection but now that I am gardening in the country I had to scale back on those because they are basically expensive entrées for our hordes of deer. I keep a few favorites behind fences but out in the yard I have better luck with ferns. 

Lest you think that all ferns need daylong shade, I have quite a colony of Ostrich fern that do just fine in nearly full sun. In fact they were getting a little carried away so I had to take some of them out. Here they are happily crushing my baptisia.

You're going to need to provide supplemental water especially under big trees, but established ferns can be surprisingly drought tolerant. Maidenhair fern can be a little fussy but Autumn, Lady, Male and Cinnamon fern are all happy in part sun to full shade, which is also where you will find ME when it's 90° or better. And you should really try to have some Painted fern if at all possible. 

So let's take a break from summer heat and enjoy this word search puzzle created by our very own Jeff Good. (Answers here)

In early March 2021, I lgot off the plane in Phoenix and began my Arizona vacation by heading up toward the Grand Canyon. I knew I was in that desert environment so prominently romanticized in Western films due to the mighty Saguaro cacti I could see in every direction. If you see a wild Saguaro, you can be certain you are in the Sonoran. This 100,000 square mile desert in Arizona, Sonora Mexico, and a corner of California is the only place this cactus grows.

A Saguaro is hard to miss. They average 10-52 feet high with the tallest on record being 78 feet. When fully hydrated they can weigh between 3200 and 4800 pounds. These dimensions are reached over its 150-200 year lifespan. They have 3 inch spines, and had I been there in April, I may have seen its waxy white flower bloom. The root system typically fans out as far as the cactus is tall, about 3 to 6 inches underground with a 3 inch tap root.

If you live in Arizona, but don't have a Saguaro on your property, you can have one planted. The best time is fall after the monsoon season. Plants under 5' can be purchased and planted by your average homeowner. Larger specimens require heavy equipment including cranes and backhoes. As much of the root system as possible must be preserved and the cactus must be planted in the same orientation in regards to the sun as it was where it was taken from. Only authorized companies are allowed to harvest Saguaro from landowners willing to sell them. Cacti with arms are more expensive than ‘spears’. Armless spears cost about $75-$125 a foot. A one-armed 75-90 year old specimen can go for $1500-$2300 installed. A large transplant cannot be deemed successful until an entire year has passed. I would hate to be the person who paid $2300 for a dead cactus, which does not include removal. When planting young Saguaro (sounds like a safer bet, but not nearly as impressive), make sure to give them a shade providing ‘nurse’ plant like the Palo Verde to give them a break from the unrelenting sun. If you don’t live in Arizona or Mexico, small plants can be grown indoors provided they have plenty of sun.

If I lived in southwest Arizona I think I would just go visit them at their home instead of kidnapping them and forcing them to live at mine, since they are plentiful inside and outside of urban areas. Or, I could just buy a piece of property that already has some.

So, remember...If you are lost and see Saguaros, relax. You are in the Sonoran desert and have narrowed down your location to an area about 100,000 square miles, and you are most likely in Arizona or Mexico. Technically no longer lost, at least on a global scale.

Earlier in life I enjoyed a lack of sensitivity to our old friend, poison ivy (Toxicodendron radicans). The allergic reaction to this plant can wax and wane throughout one's life, but most of us start out allergic and stay allergic, with the effects growing worse with each exposure. I had a friend that even got it in the winter, but I never did. Part of it was that I quickly learned to recognize it even at a distance, especially after noticing the resemblance to Fragrant Sumac (Rhus aromatica), a safe-to-handle ornamental native shrub. Check out this website here for some examples.

However. A few years ago (OK, it was 15) I was surprised by a nasty case that required a course of steroids to get rid of. Maybe doing that woodland cleanup on a humid day wasn't such a good idea? Now I dedicate myself to avoiding poison ivy at all costs. I didn't encounter too much of it in my suburban garden but out here in my country garden holy heck it is everywhere. The tricky part is to not only look for those "leaves of three" but those tell-tale rooty vines clambering up tree trunks, with no foliage at eye-level where you stand a chance of noticing it, until popping great big leaves in the canopy, blending in with your hardwoods. Don't lean on any tree trunks!

A major issue is that poison ivy foliage is extremely variable. The three-leaf thing is definitely an ID point, but the darn leaves can be notched or smooth, matte or a bit shiny. The one thing that seems constant is it's exceptional vigor - it looks green and healthy all season until it bursts into glorious fall color. And while poision ivy is usually seen as a vine or groundcover, it can get quite woody and shrublike with age.

Another thing that confuses people is that there are OTHER vining plants found in the same habitat. Can you reliably tell wild grape and woodbine (parthenocissus) from poision ivy? Another fooler - baby boxelder seedlings. Even I sometimes glove up to pull one, just to be on the safe side. But I will tell you, if you see white berries on a vine, you are looking at poison ivy. Incidentally those berries are a valued food for plenty of wildlife which helps explain why it comes up everywhere.

In other (unwelcome) news, climate change is is making poison ivy both more virulent and allergenic. Ugh. Climate change is making poison ivy stronger and itchier

To remove it one must either pull it or use Roundup (glyphosate). Sever the vines that are climbing your shade trees, treat the fresh-cut stump, and spray any regrowth that occurs. Forget those "organic" salt and vinegar recipes, it's just going to re-sprout, and salting the soil is undesirable. And you must never, ever burn it as the smoke is toxic. Goats eat it, so you could see about renting a herd of them to clean up your acre, like the City of Ann Arbor does. Keep a bottle of Technu by the sink, and in your work truck or garden tool bag for fast treatment if you think you've been exposed and you might save yourself a trip to the doctor for a steroid pack.

Genetically modified foods have gotten quite a bad rap in the past few years, something I attribute to both a lack of knowledge and a multi million-dollar marketing campaign by the Non-GMO Project. That innocent looking butterfly that’s seemingly plastered on everything from salt to bread is an enormous spreader of misinformation. To begin with, salt does not have any genes to modify so a “Non-GMO” label is a bit misleading! I’ll try to dispel some of the more outlandish claims here.

Claim #1: Genetically modified produce is not as healthy as produce that is grown organically.

FALSE. There has been zero correlation between Genetic Modification and the health of food. Foods that have been genetically modified actually have a much more extensive testing and trialing process than traditionally grown foods. Biofortification can also result in a crop that has more nutrients than those that are traditionally grown. Ex. Golden Rice. (a)

Claim #2: Genetically Modified Crops are more expensive to cultivate.

FALSE. While it is true that there is a slightly higher price up front, “the economic advantages associated with insecticide savings and higher effective yields more than outweigh the technology fee charged on GM seeds.” (b)

Claim #3: The use of genetically modified crops only benefits large corporations.

FALSE. Globally, most genetically modified crops are grown by subsistence and small batch farmers solely for the purpose of providing for their families and the surrounding community. The recently approved GMO Cassava plant in Kenya produces a root with about 10 times more carbohydrates than the average cereal. It can also be grown in marginal and drought prone areas which account for about 80% of the land in Kenya. (c)

Claim #4: Genetically Modified crops use fewer pesticides.

TRUE. Most crops that have been genetically modified have actually been modified to be more resistant to diseases and pests. For example, with Genetically Modified corn, scientists engineered it to contain a gene that excretes a protein to kill invading pests such as the corn borer, thus eliminating the need to be sprayed with an insecticide (d).

(a) Ingo Potrykus, Lessons from the ‘Humanitarian Golden Rice’ project: regulation prevents development of public good genetically engineered crop products, New Biotechnology, Volume 27, Issue 5, 2010, Pages 466-472, ISSN 1871-6784 

(b) The Economics of Genetically Modified Crops, Annual Review of Resource Economics, Vol. 1:665-694 (Volume publication date 2009) First published online as a Review in Advance on June 26, 2009

(c) Kenya approves disease-resistant GMO cassava

(d) Gewin V (2003) Genetically Modified Corn— Environmental Benefits and Risks. PLOS Biology

Early this spring I had the privilege of visiting the Desert Botanical Garden in Phoenix, Arizona, where I had my eyes opened to how many different varieties of agave there are. They reminded me of hostas back home.  Agave: loves dry heat and sun. Hosta: prefers shade and cooler temps. They are culturally opposite but have some things in common as a landscape plant. (For our Southwestern friends who think hosta is the agave of the Midwest... write your own article.)

They are both easy to care for, though agave may have an edge in that area. They do resemble each other somewhat and are both grown mainly for the look of their foliage. This foliage comes in all shapes, sizes and colors. Over 250 different varieties of agave are out there. Hostas on the other hand top 3000! Hostas come with many variations of the colors blue, green, gold, and white, with many combining these colors in variegated foliage. Agave have a similar palette, but also include some purple and pink and come in variegated varieties as well. When it comes to diversity of shape and textures, agave certainly seems to have the upper hand. Some varieties of agave reach sizes a hosta could only dream of.

The largest agave is Agave atrovirens. It can weigh a total of 2 metric tonnes. Each leaf can be over 14 feet long and weigh over one hundred pounds, and the flower stalk can grow over 40 feet tall. This may not be suitable as a landscape plant, but the Blue American is a gorgeous large landscape plant at 4-6 feet tall and 8-10 feet wide. These, along with other large varieties, can make the largest hosta feel inadequate. Leaves on agave can be wide or narrow, short or long, tightly packed or loose and open. The more you research the more amazed you become with the sheer variety

If I lived in more arid regions, I might miss certain plants, like hostas, but I could see myself joining the ranks of other obsessed agave collectors. Going to agave swaps across the southwest, scouring the internet for more varieties, drunk on my own home made mezcal. Deeper into the rabbit hole I would go, dabbling in cactus and succulents until I’m hooked on them as well. It wouldn't be long until I was involved in shady back alley deals trying to get my hands on the rarest varieties.

There would be an intervention most likely... to no avail.

 All photographs copyright David E. Baker.