Many arborists mark certain lengths on their pole saws and pole pruners. When stood upright, these marks designate the standard heights for minimal clearance pruning. Not so many need to mark the height of minimal clearance for walkways, since they will prune away anything that is within reasonable reach with hand tools from the ground. The minimal clearance above parking spaces is not so easy to guess at, so is more likely to be marked on poles. So is the minimal clearance over roadways, where the lowest limbs must be high enough to be out of the way of campers and freight trucks.
Clearance to the sides is determined by the location of the curb, but even that might need to be modified at sharp turns, or where the roadway slopes significantly away from the center. Clearance must similarly be a bit higher over dips in a roadway, where the…

We are now two days into it. Is it any different than three days ago, the last day of autumn? Not really. Even in harsher climates, the changes from one season to the next are gradual. Like the phases of the moon, the seasons are constantly phasing out of the previous, and into the next. The dates of the first and last days of each season, which are determined by the position of the Earth within its orbit around the sun, are technicalities.
Seasons in the Southern Hemisphere are of course opposite of what they are here. That seems odd to me. The calendar is the same there as here. It seems obvious to me that winter and all seasons should be determined by the same dates there that they are determined by here. If winter began last Friday here, it should have done the same there, on the the…

It was one of the more common types of snow in the Santa Clara Valley in the early 1970s.
In school, we made paper snow by folding paper squares in half and then into thirds (so that they were folded into sixths), and then cutting notches and slices out of them. They unfolded into the prettiest and laciest snowflakes!
In Westgate Mall, snow was blown by small fans about the new models of Singer sewing machines that were magically suspended in big acrylic spheres. We children could not get into the spheres, so were left wondering if the snow within was as cold and wet as we were told it was, and why it was necessary to demonstrate that the new sewing machines were resistant to weather. Our mother did her sewing inside.
We sort of suspected that the snow around the Nativity at Saint Thomas of Canterbury and other…

Nomenclature of the botanical sort was so much simpler back when we studied it back in the 1980s. It was intended to be like that. It was how the various specie of plants were identified and classified. There were certain rules that simply made sense. After ‘family’, plants were classified into general ‘genera’, and then further classified into specific ‘specie’. Some specie were further classified into ‘varieties’ and ‘cultivars’. (Cultivars are simply ‘cultivated varieties’ that need to be perpetuated by cloning because they are too genetically unstable to be true-to-type from seed.)

The genus name is always first. The species name is always second. Because they are Latin, they should be italicized. Any variety or cultivar names are last, not italicized, and in semi-quotations.

Back in the 1980s, there were a few specie that did not quite fit into such neat classification. Intergeneric hybrids (between two parents of different genera)…

Red sky at morning; sailor take warning. Stormy weather is to be expected.
Back before modern meteorology, there were all sorts of ways to predict the weather. Some of the ways to know what to expect in the short term were obvious, such as simply observing what was happening off in the distance in the direction from which the weather comes. For the experienced, it is easy enough to feel changes in humidity and temperature in an incoming breeze.
Halos around the moon or sun, as well as the color of the sky at sunrise, provided a bit of insight about what could be expected a bit farther out than the short term. Some techniques were not always accurate, and some were not accurate at all.
Flora and fauna are better at predicting the weather than we are. Horses, dogs and cats get extra fluffy if they expect the winter…

Just last Saturday, in the first of my two ‘Six on Saturday’ posts, I mentioned that I had never before seen the berries of barberry. https://tonytomeo.com/2018/12/08/six-on-saturday-too-much-autumn-color-iii-cherries-berries-plums-apples-ginkgo/ Well, just a few days afterward, which was also a few days ago, while getting pictures for the English hawthorn that will be featured on Tuesday, in the same mostly brutalized landscape that I happened to mention in a post last Wednesday, https://tonytomeo.com/2018/12/12/horridculture-disdain-for-bloom/ , I noticed that the barberry shrubs were adorned with these odd red berries. They were quite tiny, not much bigger than grains of white rice. Nonetheless, they were the berries that I had never before seen. Now I know that barberry really does produce berries.

I had heard that such berries had medicinal and culinary application, but because I had never seen the berries before, I believed that the fruit was obtained from other specie. Perhaps the barberries that I…

We learned it young from Schoolhouse Rock. Those of us who studied Landscape Design were compelled to learn why, and assume that it is always true.
Well, I am not a landscape designer. I am just a horticulturist and arborist. I can see why three is the best number for groups of trees, and that five is probably the second best option for larger groups, followed by seven, and then nine, and so on. I sort of understand why two, four, six, eight and so on are not so desirable. However, these rules are not absolute.
When I was a kid, many suburban front yards were outfitted with three European white birch trees. Such groups were typically in a corner of the rectangular yards, just outside of the curvacious mowing strips that were designed to make the rectangular spaces seem to be more irregular than they really were. Individually, the…

Many towns display a Town Christmas Tree in a prominent and centrally located public space.

The Town Christmas Tree in Los Gatos is a now mature but formerly feral deodar cedar that grew by chance next to the railroad tracks where they passed through downtown a very long time ago. As the railroad tracks were removed, and the rail yard was redeveloped into the Town Plaza, the maturing cedar tree survived the process to become the most prominent tree there. Because it just happened to be a symmetrically conical coniferous tree in the most prominent spot in town, it was a natural choice for the Town Christmas Tree. It gets lit up and decorated for Christmas, and is where children can meet up with Santa Claus.

The Town Christmas Tree in Felton is the Featherstone Tree, which is a mature coastal redwood tree that happened to be planted right on…

This would be a good topic for one of my rants on Wednesday, except that it is too silly for that.

Many years ago, before I started writing my gardening column for our local newspapers, my colleague Brent and I used to exchange funny newspaper gardening articles. Some were obviously not written for local climates. Some were just very inaccurate. Back then, it was done by mail, so the articles were added to anything that we happened to be sending to each other at the time. If I sent him some seeds, I would add an article or a few from the San Jose Mercury News. If he sent my cuttings, he would add an article or a few from the Los Angeles Times. They eventually became the inspiration for my gardening column, when Brent and others told me that rather than making fun of the inaccuracies of the articles…