Yellow World Domination

This week is the peak bloom of Hybrid Rosa spinosissima 'Harison's Yellow' on my "rose berm", the latter a slightly-raised (domed to about 2 feet high) area of transplanted soil that was a birthday gift from my mother in the early days of my garden.  According to my notes, it was planted there in 2003 from a sucker of another earlier transplant from my first garden in town.  'Harison's Yellow' is easy to root from suckers, at least if you treat it right, although my early attempts to gain "wild" suckers of this rose were failures.  I'm trying not to wonder if those previous failures reflect on my talents as a gardener.

Honestly, who could want, or even dream, of a sunnier or more vibrant yellow rose, bright in the shadows and brilliant, nearly eye-searing, in full sunlight?  The blossoms are nearly perfect, never fading until the petals fall to the ground,  unblemished by rain earlier this week, and each with fragrance to rival the finest efforts of professional perfumers.  In case you're wondering, "perfumer" is the correct English term for such experts in fragrances, and it is so much more appealing than the French term, "Nez" (nose).  

If 'Harison's Yellow' has a flaw, a snag in its character, it is its quest for garden, or perhaps even world domination.   Although I found it difficult to transplant in my first few attempts, it suckers and spreads just fine if left to its own merits, crowding out less vigorous plants to form a vast impenetrable hedge if you allow it.  In this bed, it has, over time, smothered a 'Souvenir de Philémon Cochet' and, more recently, an 'Adelaide Hoodless', and currently it has a young 'Roseraie de l'Haÿ' surrounded and threatened.

This, a view from the other side of the berm, better shows its unchecked spread, the mass of the previous photo extending out of the picture to the right.  Four feet high, thorny and straggly and sparsely-leafed this early in the summer, at times it seems that only a true rose-aficionado could really love it.  The bush is crude and its manners are rude, but then it blooms and all is forgiven.

But, I ask, why not (love it)?  It's extremely winter hardy, drought-resistant, and the hailstorm, just 6 days ago, pictured at left, didn't seem to damage it at all.   'Harison's Yellow' was first blooming on April 23rd this year and now, over 10 days later, it is the eye-catching focal point of my garden.  Really, who cares if it takes over the world and drapes the hills with yellow?  Not me, not at this moment.   There's no room in my world for any other rose than 'Harison's Yellow', at least for now, and it can grow anywhere it chooses.  I can move the 'Roseraie de l'Hay' if it isn't up to the fight!  

Lord Help Me, I Bought a Knock Out® Rose!

Long-time readers of this blog are doubtless aware that ProfessorRoush hates Knock Out® roses.  I blame the Knock Out® line for the collapse of many rose nurseries and the rapid decrease in rose varieties available at local nurseries.  I blame Knock Out®s for knocking the Queen of Flowers off her pedestal and coercing the public into treating roses as mere utilitarian shrubs.  I blame Knock Out®s for their lack of grace, lack of fragrance, and their easy susceptibility to rose rosette disease.  Heck, I'd blame them for global warming if I could reason out the slightest plausible logic chain that might link them together.  

And yet, while I was "saving big money" at Menards today (or so their advertising jingle tells me), I ran across 'Petite', the so-called "first miniature Knock Out® rose," and I fell for the hype, hooked and cleaned out, as it were, right there in the store.  What can I say?  I was weak at the moment, it was priced right ($17.95), it was healthy, the back of the plant tag said it was hardy to Zone 4, and I was disappointed at all Menard's other seasonal rose offerings at the store.  My hypocrisy on full display, I swooped it up and brought it home before my conscience kicked in.

Here at home, I transplanted it to a larger vacant pot and watered it in.   Despite its "fire-engine red" color I'm not confident it will be noticeable planted alongside the large shrubs and shrub roses of my greater garden, and besides, I can always move the pot and hide my moral failure and disgrace if any discerning gardeners are coming over.  Mrs. ProfessorRoush, of course, will love this potted rose wherever I place it, but her tastes, as always, are suspect in regards to plant aesthetics.  Thankfully, her discernment is better at choosing husbands, or so I'd like to believe. 

In my defense, 'Petite', otherwise known as Zepeti®, is not really a Knock Out® rose, at least not one bred by Bill Radler. Yes, it was introduced in the US by Star Roses, the parent company promoting all things Knock Out®, but the registered variety name is MEIbenbino, indicating it was a cross by the House of Meilland, in this case by Alain Meilland in 2011.   Alain is, by my count, the 5th generation of his family to be engaged in rose culture, but he was evidently turned by the Dark Side of the Force and used RADtko ('Double Knock Out') as the pollen parent of the cross resulting in 'Petite'.  

I did notice an unexplained oddity during my research around MEIbenbino.  Helpmefind\roses says that 'Petite' is the "first rose covered by a U.S. Utility Patent, which protects the introducer by restricting any party from hybridizing with it."  A utility patent restricts breeding, propagation, reproduction from or development of this variety as well as propagation.   And yet, helpmefind/roses also says that 'Petite' is a verified triploid.   Since triploid plants are usually sterile, I'm a little perplexed about the "superpatent" afforded this rose, since logically it should, as a triploid, be the end of its own genetic line.   Regardless, in the event that it ever develops hips and seeds, one should keep it to oneself and not notify the patent police.  Or, like Bella here, just avoid this rose altogether as a safety measure.  My conscience will thank you.

Dandy Standout

Any ideal hobby should have variety, and gardening seems to have it in spades (yes, pun intended).  Gardens provide variety of species, cultivar, and plant size.  Variety of color, variety in foliage (in fact, some foliage is "variegated"!), variety in season of bloom, and variety of leaf shape, petal shape, and plant form.  Gardeners induce variety (or chaos) themselves by how they site a plant, how they fertilize and care for it, and how they protect it from temperature extremes or insects.

And every season, it seems, some plants seem to decide all on their own to step up and stand out, to shine or sparkle.  This year the first plant to do so seems to be the lilac 'Yankee Doodle', a relatively recently introduced (1985) cultivar of S. vulgaris selected by the late Jesuit priest, Father John Fiala at his farm in Medina, Ohio, the acreage he called Falconskeape.

My 'Yankee Doodle' caught my eye today as I was engaged in my first spring mowing, mowing not so much grass as a crop of rampant henbit, chickweed, and other spring nuisances.  'Yankee Doodle' was planted in 2003 among a line of right lilacs along the west border of the garage pad, a line that perfumes the entire yard if provided the proper temperature and a gentle breezes comes out of the south or west.  My intention at the time of planting it was to both screen out the two-foot tall ugly concrete wall that constitutes the edge of the garage pad, and, to create just the sort of saturated fragrance showstopper that it has become.  My lilacs amply fill both roles.

Most years, 'Yankee Doodle' struggles, lanky, tall, and sparse, its stems prone to borers and breakage, as are the cultivars that flank it, 'Nazecker' to the right and 'Wonderblue' to the left.  I should complain less about them since this bed is labeled "Forsythia Bed" on my maps and contains not a single forsythia, all perished or shovel-pruned for their inconsistent bloom.  This year, somehow, 'Yankee Doodle' bloomed extra-prolifically and it is the most prominent lilac of its immediate group, indeed of the whole line.  It is at the end of its bloom cycle as pictured here, the deepest purple single flowers of lilac-dom faded just a bit here by age and a recent rain.  And yet, still it caught my eye as I mowed, a 'Yankee Doodle' all dandied up and showing off its best side in this, its seemingly random year to stand out.   So now, 'Yankee Doodle' fading, I'm left to wonder what species, what variety, what plain, regularly overlooked plant will step up to be the next Cinderella or Dandy.

And Where Did YOU Come From?

By the question in the title, ProfessorRoush is not trying to be nosy of you, the reader, but of this precocious Eastern Tiger Swallowtail (Papilio glaucus) that suddenly appeared as I was puttering around outside, doing some trimming, some weeding, and a little planting.  I was shocked in the moment, first to see any butterflies at all this early in the season, and then shocked again to have it cooperate for these closeups.

You see, really I was out taking stock of things, because for the past few days, I've been in Washington DC, where I took the photo on the right during some moderate rain and wind at 6:41 p.m. (isn't it amazing that because of phone cameras, I will always know exactly where I was at 6:41 p.m. on Friday, April 11, 2025, because the data is forever embedded with the photo)?  If you're going to walk near the White House, I can now recommend doing it on a chilly, rainy Friday night because the streets were deserted at that hour, no protestors ranting and chanting and messing up my "chill", just a few tourists on the sidewalk and a half-dozen watchful Secret Service and Capital Police agents (that I could see at the time).  I was only sorry the landscaping lights weren't on yet, and, no, I didn't ask to knock on the door and see if President Trump was receiving visitors.

I was also fortunate on Saturday to have my return flight fly directly over near our home, and so, on April 12th at 2:40 p.m., I was able to capture this photo from the window of the plane.   Our home and gardens are in the white circle center left, surrounded by the darkened prairie ground exposed from our burn last week.  Click on the photo to enlarge it (hitting "escape" will then bring you back to the blog).  Mrs. ProfessorRoush was presumably not at home at the time and in route to pick me up.

But I digress.   The Swallowtail that prompted this blog entry (a male, easily gendered by its less colorful "eyes") seemed to be focused on the female holly plant sited on the northeast corner of the house, and the inconspicuous white blooms of the holly.  I didn't read anything about holly being a host plant, but both roses and magnolias are larval hosts for the species and there are plenty of those about.  Other host plants include lilacs and Cottonwood trees and those species are each in my yard as well. 

I was saddened that this specimen seems to have a damaged or missing left "tail", and I hope that won't hinder its search for a mate or its long-term survival.   For what little I know of Swallowtails, this male might also be just out of its chrysalis and maybe it just needs to unfold the left tail, temporarily rather than permanently deformed.  Either way, I wish the little guy luck and happy mate-hunting.  As there are either two or three generations of Tiger Swallowtails in a season, depending on the latitude, the Swallowtails I see in September could be his grandchildren.

The White House, from Lafayette Park, 04/11/2025, 6:41 p.m.