Sometimes called Velvet Groundsel, this plant has been living and marketed under several different names. The first name in the heading is the one Jimi Blake ascribed to it, a name I didn’t recognize for a plant I’ve grown off and on in the past…it got lost in his list paired with a particular Thalictrum and I simply missed it…until recently. I knew it as Senecio cristobalensis and, had I recognized it, would have included it with an earlier post in which I focused on his favorite Asteraceae. I did actually mention the plant there simply as another Senecio that I’ve grown of value. Here I shall treat it more directly. The genus, Roldana, was recircumscribed in 2008 to include some 54 different species. Other authors include as few as 48 and as many as 64 in the genus, most of which used to belong to Senecio and are native to the extreme Southwestern US, Mexico and Central America. Most of the Roldana species are somewhat ‘shrubby’ herbs with a few, like this one woody, even tree like. Both genera are within the Asteraceae and share tribe status as well, Senecioneae. For the curious, Roldana spp., even more finely, are included in the sub-tribe, Tussilagininae, which includes the very commonly grown genus of garden plants…Ligularia! On closer examination the morphological similarities will begin to stand out to most of us. Check out all of the photos on the Wikimedia Commons page for Roldana petasitis. Roldana petasitis is the correct species name for this plant. With all of the shuffling and consequent confusion still going on in the world of taxonomy, especially in such a mixed large genera like Senecio, we must all be allowed our mistakes of nomenclature. It is a volatile changing world out there. Continue reading
I think it’s safe to say that the longer that I garden, the more plants that I grow and learn about, the deeper my appreciation for all plants and the living world becomes. Life itself takes on a more ‘miraculous’ quality and I am both humbled by this and saddened by the indiffference and wide spread disregard and destruction that dominates the relationship of so much of the human population with regards to the green world. (sigh) How, I sometimes wonder, can so many people not ‘see’ what is around them, the beauty and the miraculousness of it? Having said that, I dive back into another installment of Jimi’s ‘Obsession’!
Impatiens omeiana ‘Sango’
Everyone has grown Impatiens, right! It’s one of those ubiquitous bedding annuals even many non-gardeners know that they might put in a pot on their shady porch. I used to grow these by the hundreds when I put together display beds for Parks as they were one of the few freely flowering options available from the bedding plant industry that could ‘produce’ on shade sites. It’s so well known that its common and genus name are the same, a relatively rare occurence in the plant world. As they tend to do, hybridizers pushed the limits on these and, over the years, have developed a good number of cultivars that are tolerant of direct sun, probably increasing their popularity while at the same time teaching an unhelpful message to the general public, that it isn’t really necessary to pay attention to a plant’s requirements…ours are what matters, but that is an entirely different issue than what I want to cover here. Continue reading
Last summer was a sit, wait and worry, summer. The previous winter of ‘16-‘17 was a hard one here. Because my Butia capitata had been sailing through its previous nine winters, in this location, without damage, I assumed it would be OK this time, but it wasn’t. Our 12” snowfall weighted the fronds down splaying it open and no doubt allowing moisture, ice etc. to penetrate down into the trunk to the meristem, the critical tissue from which all growth in the plant begins. Last summer not one new frond emerged, an indicator that the meristem was damaged or killed. The good thing was that there was no sign of rot. The new ‘spear’ could not be pulled free….The same winter killed my Trachycarpus martianus darkening and shattering much of the fronds’ cell walls and structure in a way typical of many freeze damaged plants. Its center spear, the newly emerging fronds, pulled free. My Butia spent last summer in a kind of limbo. This last winter was much more mild. Now, finally, with the heat settling in around us, those old spears are growing again, their leaflets opening wide, while their long rachis/stems, fully extend and arch! New spears are forming still pressed tightly against the most vertical and longest of these whose leaflets you can see below just beginning to fan open. This is slower growing than the Trachys, working on opening its third frond of the year! Typically my Trachycarpus fortuneii form 15-20 fronds in a year. I’m wondering now how this lost year of growth will effect the Butia’s trunk diameter. Because of how Palms as monocots grow, I suspect that it will result in a narrowing of its ‘waist’, with a swelling back to normal above when more normal winters prevail. Continue reading
People will often ask me how I grow something, generally when its something they’ve killed, when our conditions, exposure etc, seem pretty close. I’ll shrug, because I may not have done anything special for my plants beyond, hopefully siting them appropriately. Then, there are all of the plants I’ve killed, sometimes repeatedly, that others seem to have success with while doing little more than ‘dropping’ them in the dirt.
I have a bit of a thing for the members of the Podophyllum…and almost everyone I know, who grows them, does so more successfully. I do have a very ‘happy’ clump of P. pleianthum, and I’ve grown it in Park beds very successfully downtown, but until now I’ve had very little success with any of the others. Most have lead short, tragic lives….P. delavayi…dead; an unnamed P. delavayi hybrid…dead; P. versipelle…dead; P. x ‘Kaleidoscope’…dead; P.(Sinopodophyllum) hexandrum…dead; P. x ‘Spotty Dotty’…dead; even P. peltatum...dead. Some of these I’ve killed more than once. These are usually relatively costly plants to acquire and their loss is more than emotional. Sometimes I’ve grown them on in their pots for a year before I’ve thrown them into my garden to their deaths. I’ve lost several other plants from the Barberry family as well, having consistent success only with the shrub forming species and Epimedium spp.. I’ve lost both NW species of Vancouveria as well as Achlys triphylla, one of my favorite ground covers, all of which I’ve grown successfully when I worked in Parks. These shouldn’t be hard. I’ve grown quite a few different Epimedium spp. and varieties at home and several in Parks, all of which have been consistent and dependable performers. For a long time, my failures with Podophyllum and assorted woodlanders, was an embarrassment. I couldn’t figure out why I kept losing them. I have a hard time with many Himalayan plants in my garden and a lot of woodlanders in general, I think because it may just get too soggy over the winter. They’ve taught me to shrug when they fail to emerge in spring.
Flowers can be ‘incidentally’ beautiful. We often selfishly view them as products of nature intended to fulfill our own hunger for beauty, failing to recognize them for what they are, living organic structures evolved over time to continue their own species, organs and tissues meant to attract the necessary attentions of pollinators, to produce the seed of generations to follow. We, as a society, have learned to view a select few of these as beautiful. We respond to them in a way not unlike the pollinators themselves do, and by either ignoring them or focusing our attention upon them, we too alter their future form and their very existence. Sometimes we do this more directly through choosing the plants we want around us. Other times it is our indifference that seals the fate of a plant or landscape, especially when the flora is unable to grab our often preoccupied attention and we clear land for development wasting all of the ‘lesser’ weedy natives we’ve learned to undervalue, or, through our efforts to ‘improve’ plants by controlled breeding and hybridization, intentionally altering their form even the conditions under which they will grow. Sometimes, in our desire, for fashion and an idealized beauty, we attempt to control and remove that which we don’t want, creating sterile flowers, the antithesis of what a plant would ‘want’. We select for bloom size, scent and color, for period of bloom, we seek to increase the number of petals and alter the pattern they may be held in, even the lifespan of the individual flower, the height of the plant so that it doesn’t flop over, the ability to grow it in more sun or shade, the shape and color of leaves and the form of the whole plant. We attempt to control all of this and crank out a uniform product that can be ‘plugged’ into landscapes and gardens as desired. Plants with dependable performance characteristics, a pedigree.
We need to remember that this is what we ‘want’, not what the plants ‘want’, nor is it necessarily in their best interest as either a species or a member of a plant community. These days most of ‘us’ aren’t gardeners. Our relationships with nature were broken long ago. It is difficult to see the critical connections in nature, between plants and the organisms they have evolved with, upon which they are dependent, especially if someone is not looking. It is even more difficult to see where we ourselves fit into this in our materialistic, consumer society where so many of us measure ourselves and others by the things and property we own…and are quick to ‘take’ from others. I’m going to paraphrase a snarky rejoinder I’ve heard these last several years, ‘Yeah, you’re special, just like everything else!’ and I mean this in the broadest sense. Continue reading
If you follow plants far enough back up their evolutionary ‘tree’ you find plants broken down into flowering plants, that produce seeds (Angiosperms have seeds encased in a ‘fruit’; Gymnosperms have naked or bare seeds) and those that pursue other strategies to propagate themselves. Plants like Ferns have special organs that produce spores which in turn form an intermediate form, where fertilization takes place, which then grow into an adult plant. Another step back and plants are divided into vascular or non-vascular, those with specialized cells and structures that include phloem and xylem tissues to move water, nutrients and various metabolites around the plant and those without. Non-vascular plants are essentially single celled organisms that form colonies or ‘bodies’ with each cell the same, complete and undifferentiated. Plants as a whole are very unique and resist easy classification. The botanists among us, in an attempt to better understand this, study plants and their relationships. Systematics is the study to make sense of the Plant Kingdom, giving it order: what constitutes a plant, how they relate to each other and how they evolved…whom ‘begat’ whom. Sometimes it would seem that the only common factor shared by all plants is their utilization of chlorophyll, but even this is not universal, because their are saprophytic plants that live off of the carbohydrates and metabolites produced by other plants and some of these are relatively complex Angiosperms. As gardeners we mostly concern ourselves with vascular plants unless we cultivate mosses, liverworts and such. Most of us concern ourselves with the flowering plants, though we may also grow spore producers like ferns for their structure and texture. All of these grow from seeds or spores that carry the DNA that provides a particular species with its ‘script’, a detailed growth plan organisms attempt to follow throughout their lives. Agaves are vascular Angiosperms that share key flowering characteristics within the genera and more broadly within their family. Continue reading
When we garden in the public view, and most of us do, at least where we front along the street, or even when we invite others into its more private and inner sanctum, and we grow plants successfully, people are going to ask you: ‘What’s that?’ ‘I didn’t know you could grow those here!’ and, ‘What did you do? they always die for me!’ In short, if you’re successful, people will regard you with respect and assign to you the attributes and position of ‘expert’…when all you did was try to follow the gardening maxim of ‘Right Plant, Right Place!’ In short, you tried not to kill it. Genuine expertise requires broader experience, study even, that the simple buying and planting of one particular plant cannot earn you. If you’re like me such easy success and adulation, can be embarrassing and often serves as a prompt, to look through books, search the internet and ask others, that you know who have way more practical growing experience than you yourself do, and gradually, the assignation of ‘expert’ feels a bit less flimsy, maybe even ‘earned’. I often tell gardening friends that I consider myself to be more of a dilettante, flitting from one plant or group of plants to the next. Inquisitiveness has always been a part of me and growing one Penstemon, one Banana or one Agave, never adequately ‘grounds’ me. Grow a few more and I feel a little more comfortable with it. Look into some of its ‘cousins’ and the particulars of where something grows, its climate and soils particularly, and I feel ‘better’, much like I did when I was preparing for mid-terms at school. And then I move on, my interest sated for the time being, somewhat comfortable in what I know and curious about the next group. Over time they all start forming a bigger picture out of what once seemed like a massive, unknowable puzzle and I enjoy solving puzzles. Having said this, I still don’t consider myself to be an expert, just an avid and focused gardener. Continue reading