Posted on by tonytomeo · 17 Comments

More Misplaced ‘Environmentalism’

P80214Nature has been getting by just fine for a very long time before humans started to interfere. It has survived all sorts of catastrophes literally longer than anyone can remember. It was here when dinosaurs were exterminated by a meteorite or comet or vulcanism or whatever catastrophic yet natural event finished them off. In fact, Nature was here for all of the few mass extinction events of the very distant past, including the Permian – Triassic Extinction, which only about 4% of life on earth survived! We all know that “It’s not nice to fool with Mother Nature.”, or serve her margarine that tastes like real butter; but we should also realize that it is rather presumptuous to think that we can be more efficient with correcting all environmental damage. Very often, it is best to let nature do what nature does best.

For example, forest fires are perfectly natural. They are more frequent now because of human activity; but they are less extensive, likewise because of human activity. Humans contain fires that would naturally burn much larger areas. Preventing vegetation from burning allows it to accumulate and become more combustible. If deprived of fire long enough, vegetation within ecosystems that rely on fire as part of their natural restorative cycle eventually deteriorates, or become so combustible that when it does burn, its seed gets incinerated.

Many box elders along the San Lorenzo River have been dying for the past many years. We have not identified the pathogen associated with the necrosis, but it is probably a naturally occurring pathogen that is an intricate component to the natural ecosystem, (although after last winter, an inordinate number of box elders succumbed at the same time). Regardless, trees succumbed and fell. A significant void developed within the collective forest canopy on the Eastern Bank, near the Graham Hill Road Bridge. ‘Environmentalists’ wanted to ‘help’.

These new trees in the picture were planted within the area vacated by a few deceased box elders. The closer of the two is a coast live oak. The other is a bay laurel. There are a few more beyond those in the picture. Native vegetation that developed ‘naturally’ but happened to be in the way was removed to facilitate this project. To prevent native deer from damaging the trees as deer would do ‘naturally’ the trees were imprisoned in small cylindrical cages. Because the trees did not grow there and disperse their roots ‘naturally’, they must be irrigated until they can survive on what they get ‘naturally’ from rain.

The irony of all this is that native vegetation that was growing ‘naturally’ was removed to install ‘unnatural’ nursery grown trees intended to restore a ‘natural’ ecosystem that was already doing what it does ‘naturally’. Although native, the coast live oak ‘naturally’ prefers to avoid riparian environments such as this. It ‘naturally’ prefers a more exposed and drier situation. Bay laurel trees live there ‘naturally’, which is why a few had already started to grow from seed. These seedlings would not have needed to be caged or watered, but were removed to plant the new trees. Yes, bay laurels that would have survived on their own were replaced by bay laurels that must be watered and protected. Willows and cottonwoods that were quite prolific in the area were likewise removed, although many more remain lower on the bank of the River.

In the background, in the upper right corner of the picture, the bright yellow flowers of an Acacia dealbata can be seen. It is a seriously invasive exotic species that displaces native vegetation. Although it is impossible to exterminate the species, this individual tree that has been dispersing profuse seed into the San Lorenzo River for many years, really should be removed. Even if nothing were to be installed to replace it, the removal would benefit the ecosystem. Nature would have no problem finding native trees that would like to occupy that spot.

Posted on by tonytomeo · 21 Comments

Invasive Exotics – Acacia dealbata

P80211Every invasive exotic (non-native) species has a story of how it got here.

Blue gum and red gum were imported to produce the timber needed for railroad ties. Many annual specie were forage crops for grazing cattle. Some got here by stowing away as seed on or inside cattle or other animals. Supposedly, mustard seed was broadcast by those traveling on the El Camino Real so that other travelers could find the route later. Then there are all sorts of invasive exotics that were imported simply because people liked to grow them in their gardens.

It is difficult to imagine why anyone would import any of the weedy specie of broom (Genista specie) or the sloppy species of pampas grass (Cortaderia jubata). It might have made sense at the time, before more appealing specie were introduced, or before less invasive modern cultivars were developed. Black locust has always been, and continues to be a pretty tree, long after more colorful and less invasive cultivars were developed. They were brought to California by prospectors from the East at a time when no one knew or cared how invasive they would be.

Acacia dealbata was likewise imported simply because it is a pretty tree, before anyone knew how it could naturalize and displace native vegetation and wildlife. Now it grows very rampantly in utility easements where other vegetation has been eradicated. Not only does it interfere with the efficiency of utility cables, but it is also combustible if ignited by sparks from electrical cables. Yet, it is so colorful and pretty in the middle of winter that it is not easy to dislike. Unfortunately, environmentalism is not what it used to be, and some so called environmentalists want it to be protected simply because it is ‘alive’.P80211+

Posted on by tonytomeo · 5 Comments

Flame Vine

80117This is no timid vine! Flame vine, Pyrostegia venusta, is related to the lavender trumpet vine and blood red trumpet vine, and is just as vigorous. Although it can not be recommended for tight spaces or small refined gardens, it excels at obscuring concrete walls. It only needs wires or stakes to be convinced to climb. If it gets too big, it can be cut back after bloom to regenerate quickly.

Unlike the related trumpet vines that only bloom less but otherwise grow well in partial shade, flame vine really wants plenty of sunlight and nice warm exposure. Fertilizer can accelerate growth for new plants, but too much can inhibit bloom of mature plants. Occasional watering is all flame vine wants. Regular pruning may be needed to keep tendrils away from plants and painted surfaces.

Flashy drooping clusters of bright orange flowers bloom in autumn and winter, much to the delight of overwintering hummingbirds. Each floral cluster contains more than a dozen narrowly tubular flowers that are almost three inches long. The evergreen triofoliate leaves (divided into three leaflets) are quite lush through most of the year, but look a bit tired and sparse as they molt in spring.

Posted on by tonytomeo · 36 Comments

Very Bad Houseplants

P71230Just because it ‘can’ be grown as a houseplant does not meant that it ‘should’ be. That is a lesson that Brent and I never learned in college. He and I were roommates in the dorms at Cal Poly in San Luis Obispo, which, as you can imagine, was a problem. Our room on the top floor of Fremont Hall was known as the Jungle Room. It was so stuffed full of weird houseplants, as well as a few plants that had no business inside. We had a blue gum eucalyptus bent up against the ceiling, an espaliered Southern magnolia, a Monterey cypress, and a herd of camellias that we rescued from a compost pile on campus.

After college, our own homes were no better. Because my dining room was rather small, Brent gave me tall weeping figs that had unobtrusively bare trunks down low, and plenty of fluffy foliage pressed up against the ceiling; a technique we did not quite perfect with our Jungle Room blue gum. I had a giant yucca in the guest suite, a redwood in my bedroom, king palms in the parlor, and a lemon gum eucalyptus over my desk in the office. The bathroom was the worst, with pothos and Algerian ivy hanging over the shower curtain, and billbergias up over the shower. A pair of small birds nested in the billbergias, and before I realized that they were there and evicted them, they started a family!

At least Brent kept most of his plants outside where they belong. The staghorn ferns grab onto the walls when they get the chance. Wisteria vines grab onto anything else. The flame vine climbed up the chimney (appropriately), and before Brent knew it, had sneakily spread to the opposite side of the parapet roof! Then there was the giant timber bamboo. Yes, that is what I said; giant timber bamboo. I know what you are thinking right now, so there is no need to say it.

There is a narrow space between north side of Brent’s home and the concrete driveway next door. It is almost three feet wide. Brent though that if he planted the bamboo there, it would not get to the other side of the driveway. He was actually correct.

Did I ever mention how vain Brent is? Well, that is another topic for another time. I will say for now that he has more clothes than his teenaged daughter Grace. A lot more. They do not all fit in his big closet. He hangs some of his longer coats that he does not need very often in Grace’s much smaller closet. One day, he was reaching around the clutter that is common in a teenaged girl’s room, and groping for one of his coats in Grace’s closet, when he grabbed a hold of something that should not have been there. He was not certain what it was at first, but when he found his coat and pulled it out, a few dried bamboo leaves came with it and fell onto the floor!

The bamboo did not even try to go under the neighbor’s driveway. Instead, it went under the foundation of the house. Where it came up, it had nowhere to go, so somehow weaseled in next to a water pipe, and followed it up behind the bathroom washbasin. Once inside, it somehow weaseled past a valve access panel behind Grace’s closet, and straight up to the ceiling. What is even funnier is that Grace knew it was there, but figured that it was just another one of Brent’s crazy landscaping ideas!

Just in case you are wondering, giant timber bamboo is a very bad houseplant!

The bamboo is gone now. It got so tall that the wind would blow it against the terracotta tiles on top of the parapet wall. Also, the foliar litter was too messy on the parapet roof and the neighbor’s driveway. It did not contribute much to the landscape anyway, and shaded only a driveway that is seldom used.

Posted on by tonytomeo · 9 Comments

Dago Pansies

P71007You can say what you like about nasturtiums. My landscape designer colleague, Brent Green certainly did when he named them ‘dago pansies’. They are still one of my favorite flowers, and just might be my favorite, even though none are convincingly white. They were my first. I discovered them when I was very young. They were growing near an old English walnut tree in my great grandfather’s garden. He noticed that I liked them, so found some seeds underneath to send home with me.

I did not know what to do with seeds, so I poked holes into the ground and dropped the seeds into the holes just like my great grandfather showed me to do. A few days later, small round leaves appeared where I had put the seeds. The leaves expanded and looked just like those of the nasturtiums in my great grandfather’s garden. Yellow, orange and even a few red flowers were blooming within a month. I was so impressed when the flowers first appeared, but was then briefly saddened when the first flowers to bloom faded.

I say that I was ‘briefly’ saddened because of what happened next. Where the flowers had been, I discovered what appeared to be the same sort of seeds that my great grandfather had given me! I still did not understand how these things worked; but I took the seeds and stuck them into the ground in other areas . . . anywhere I thought nasturtiums would be nice. They grew, bloomed and provided more seeds, which I took and planted elsewhere . . . and everywhere! To this day, my pa considers nasturtiums to be invasive weeds because of how they overwhelmed the garden that he thought was his.

In my kindergarten classroom, we had ‘color boards’ on a wall. Red, yellow and blue were the tree primary colors. Orange, green and purple were the secondary colors. There were also boards for pink, brown, black, white and gray. We could bring small disposable artifacts from home for our teacher to tape to the various boards. The artifacts were mostly bits of fabric, colored paper, pictures from magazines, Legos, buttons, or really anything we could find that could be taped to a wall. Of course, I had to bring yellow, orange and red nasturtium flowers, and a green nasturtium leaf. Our teacher probably did not want to tape them to the wall, but did anyway. They turned brown, but stayed there. I bragged about them for the rest of the school year.

I still grow descendents of those old nasturtiums. I also try new varieties just because I enjoy them so much. I still like the classic ‘Jewels mix’ because they have every color. They are smaller than wild nasturtiums at first, but are more prolific. After a few years, they revert to the common yellow and orange. Renee’s Garden Seeds at https://www.reneesgarden.com/ has some very interesting varieties, including a few old classics. The climbing types do not bloom as much, but are fun anyway. I probably have not tried them all yet, but I would if I could. I have history with dago pansies.