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Annual Dahlia

50930They are really just smaller versions of the larger perennial dahlias that are grown for their big bold flowers and flashy colors. Technically, annual dahlias produce smaller versions of the same perennial roots that can survive through winter to regenerate the following spring. Yet to most of us, it is easier to purchase new plants in spring than to grow new plants from stored roots.

Relative to larger dahlias, everything about annual dahlias is subdued. The flowers are neither as big, nor as variable. They can bloom any color except blue or green, but are usually simple shades of red, orange, yellow, pink or white. Their main advantage is that they do not get much more than a foot tall, so they fit into more situations and do not need to be staked.

Bloom starts rather late in spring and continues until about now. Some varieties have bronzed foliage. Fertilizer promotes bloom and healthy foliar color; but too much nitrogen can inhibit bloom. Dahlias can be happy in pots, but only with good drainage and regular watering.

Posted on by tonytomeo · 2 Comments

Annuals Change With The Seasons

50930thumbLike it or not, the warm season annuals that were so flashy all through spring and summer will eventually need to be replaced with cool season annuals to provide color through winter. It is always unpleasant to pull up the annuals of a previous season while they are still blooming, even if they are already getting scruffy and discolored. It is actually easier if they got roasted by recent warmth.

Some warm season annuals last longer than others. Many are actually perennials that can be overplanted with new cool season annuals as they get cut back or go dormant through their ‘off’ season. Some cur back perennials may not survive through winter; but those that do can regenerate next spring, just as the cool season annuals that obscured them all winter are finishing.

Wax begonias, for example, are warm season annuals that can continue to bloom until they get frosted. Where sheltered from frost, they only need to be cut back because partial defoliation exposes knobby bare stems. If they can be hidden by pansies or violas through their bare phase, they never need to be removed, and some will be happy to regenerate in spring.

Conversely, cyclamen, sweet William, chrysanthemum and some primroses are cool season annuals that have the potential to survive under the lush growth of warm season annuals next summer; but that is a topic for later. (Some people are allergic to primroses like poison oak.) Iceland poppy and ornamental cabbage and kale are not so perennial, but are quite colorful through winter.

Alyssum and nasturtium really are annuals that do not survive much more than one year. However, they can perform through summer where sheltered from heat, or through winter where sheltered from cold. In ideal situations, their self sown seedling replace deteriorating older plants, so that they can perform throughout the year. Nasturtium should be planted as seed, not from cell packs.

Calendula is a popular cool season annual early in the season, but may not last through the end of winter. Yet it is popular because it is so excellent through autumn. Chrysanthemums are even flashier, although they are often replaced as soon their first bloom phase finishes.

Posted on by tonytomeo · 11 Comments

Horridculture – Vandals

P80926It wasn’t even two days. The article about the ‘Illegal Planting’ of the Memorial Tree in Felton Covered Bridge Park posted at noon on Saturday, and then on Sunday night or early Monday morning, the Memorial Tree was vandalized. Fortunately, it is nothing serious. A small bag of trash was impaled onto the binding stake that is there to keep the trunk straight, which pushed the top of the small tree aside. It needed to be bound to a new stake anyway.
(I do not often condone the use of binding stakes, but this particular tree contends with considerable abuse that causes structural distortion. The article from noon last Saturday is https://tonytomeo.com/2018/09/22/illegally-planting/ .)
Was it done by the haters who snivel about the Memorial Tree just being there? Probably not. The timing is suspicious. The technique is consistent with their style. However, they have been behaving for quite a while, and have not yet posted pictures of the vandalism to blame those they dislike, as they typically do. They are predictably vain in regard to gloating about such ‘community’ activism, particularly if they can also blame their victims for any incidental damages. ( https://tonytomeo.com/2017/12/09/hate-destroys/ )
As annoying as it is, this particular vandalism was most likely executed by someone who just did not put much thought into how bothersome it would be. It might have been done because of the lack of receptacles in which to deposit trash. Perhaps the bag of trash was impaled onto the stake so that it would be easier to retrieve and dispose of when the trash receptacles were returned to the site. The option of dropping it onto the ground might have been been perceived to be more like littering.
Perhaps I am being too optimistic and too generous with excuses.

Posted on by tonytomeo

California Black Oak

81003The most popular hardwood in California is essentially unavailable in nurseries. California black oak, Quercus kelloggii, provides between a quarter and a third of the hardwood timber harvested in California. One would not know it by its sporadic appearance within mixed forests of the Coastal Ranges. It is much more common in the Sierra Nevada, which might be why no one grows it.

Mature trees can top out at thirty feet with broad canopies if well exposed, or might be more than seventy feet tall and relatively slender if they must compete with other trees. The biggest trees are more than a hundred feet tall. The sculptural trunks are usually less then four feet wide. Trunks of old trees are commonly rotten inside. Gray and smooth young bark gets rough and dark with age.

The distinctively lobed deciduous leaves of California black oak are not much more than four inches long. They can get nearly twice as long on the most vigorous growth, or where shaded. The dark green foliage will slowly turn brown or yellow through autumn, and then defoliate through winter. It can turn a brighter yellow or orange, but then defoliates faster, if the weather gets cool fast.

Posted on by tonytomeo · 2 Comments

Leaves Are Starting To Fall

81003thumbAutumn is slow in getting here. Yes, as of last Sunday, it is now autumn. The date is determined by the equinox, so is the same for everyone in the Northern Hemisphere, and is the same for the arrival of spring in the Southern Hemisphere. It just takes a bit longer for autumn weather to develop in the mild climate here. Nights are cooler. Shorter days are not as warm as they had been.

Even without the pretty foliar color that cooling weather prompts in other regions, deciduous foliage is already beginning to fall. Poplars, willows and some other trees that a naturally endemic to riparian environments are the first to start. Some are actually developing a slight bit of color, mostly soft yellow. More colorful foliage needs cooler weather, so will develop as weather gets cooler.

Sooner or later, falling leaves will need to be raked from lawns and groundcover. Trees that drop their leaves for a long time through autumn and into winter necessitate more frequent raking, even if their leaves do not accumulate enough to do much damage. Trees that drop their leaves within a shorter season can quickly drop enough to shade out turf or groundcover, or cause them to rot.

Because fallen leaves can stain hardscape surfaces, they should be raked efficiently from pavement and decking as well. Those of us who do not mind the staining, or even appreciate its rustic patina, might leave some of the fallen foliage out for a while, but should not leave it out long enough to promote rot in decking. Some leaves cause staining quite quickly, especially if wet from rain.

If leaves need to be raked from the garden and pavement, they probably need to be cleaned from roof gutters and anywhere else they accumulate on roofs. Just like raking, the clearing of fallen leaves from gutters and roofs is scheduled around the timing of the falling leaves, although it is not nearly as frequent. It may even be unnecessary if trees are too far from roofs for their leaves to fall or be blown onto them. Leaves that stay in gutters too long eventually decompose and clog downspouts.

Posted on by tonytomeo · 8 Comments

Flowering Pear

60928Now that they have been so popular for so long, the deficiencies of flowering pear, Pyrus calleryana, (which is also known as Callery pear), are becoming increasingly evident. The dense branch structure and compact form that are so appealing while trees are young compromise structural integrity as trees mature. Symmetrical trees can be severely disfigured if limbs get broken by wind.

In the past, flowering pear had been quite resistant to disease and insect infestation. However, now that there are so many of them within minimal proximity of each other, it is nearly impossible to avoid infection with fire blight. To make matters worse, they share this very contagious bacterial disease with fruiting pear, evergreen pear (fruitless) and apple (fruiting and flowering crabapple).

Otherwise, healthy and well structured trees provide some of the best autumn color for mild climates. Foliage that was rich green through summer becomes bright yellow and orange on a weak season, with more bright red and burgundy with a good chill. The white spring bloom is likewise more colorfully profuse after a colder winter, although some find the fragrance to be objectionable.

Posted on by tonytomeo · 18 Comments

Guilt Trip

P80923It was so long ago that I barely remember it. I was just a little tyke. My older sister tripped on the driveway and broke one of the Japanese boxwood shrubs in the hedge on the edge of the driveway and front walkway. The hedge was still young then, and not completely filled in. My Pa replaced the missing shrub shortly afterward, but not before my younger brother and I learned that the gap was a shortcut through the hedge. The puny new shrub was not enough to compel us to go around like we had done before. Of course, it did not survive for long. It too got broken off.
We did feel sort of guilty, but only for a while. The second shrub was replaced with a third, which seemed like it should be sufficient to patch the gap in the otherwise formally shorn hedge. We were careful with this one, and actually got into the habit of going around the hedge to avoid altercation with it. However, it died even without our influence. Again, we felt guilty about the g. ap.
I do not remember if there were more attempts to fill the gap in the hedge with other shrubs. When we moved away from that house, the shrubs on either side were slowly filling in to obscure the void. A few years later, the gap could not be seen.
However, many years later, the hedge was pruned with an up-do, which exposed the lower few inches of trunk of each of the individual shrubs. Although there was no gap in the very uniform hedge, it was very obvious that one of the trunks was lacking, right where it had always been lacking. Oh, the guilt!
Even if someone wanted to go through the effort to cut a hole in the otherwise exemplary hedge to replace the missing shrub, it would be very difficult or impossible to find a shrub of that now old fashioned cultivar of Japanese boxwood. Modern cultivars are darker green. A single shrub of a modern cultivar would only compromise the uniformity of the now very uniform hedge. The missing shrub will need to stay missing forever. More guilt on top of guilt!
The satellite image below and the street level view from Google Maps shows that the hedge is now foliated all the way down the the ground. I will not even bother mentioning where the the missing shrub is missing from. I know you could not see it anyway. The hedge is a bit more overgrown than I can remember it ever being before, and it has a bit of that fat hedge syndrome going on, but it still looks great for half a century old. The gap is long gone. Only the guilt remains.P80923+

Posted on by tonytomeo · 7 Comments

Early Autumn Color Might Disappoint

60928thumbIt might seem like autumn color is a bit early this year. In the wild, where there is no irrigation, native box elders, and maybe some of the cottonwoods and sycamores, are already yellowing. The box elders are already dropping some of their foliage. However, this is not caused by an early chill. It is caused by late warmth after an otherwise mild summer, and might inhibit better color later.

It is still impossible to say for certain. There are so many variables that affect autumn color, such as temperature, humidity and daylength. Some of the plants that develop color late, like flowering pear trees in irrigated landscapes, might not be bothered too much by the same variables that are troubling wild box elders now. Where autumn weather is so mild, color is unpredictable anyway.

Sudden cool weather after mild weather late in summer would have been better for autumn color. (Warmth through the middle of summer is no problem.) Foliage lingers best if the weather stays cool without getting too cold. Wind and rain will eventually dislodge foliage. Sheltered sweetgums might hold their foliage until just before it gets replaced by new foliage late in the following winter.

The earliest trees to color, as well as those that are notoriously less reliable for color, are the most likely to be inhibited by the weather this year. Besides box elders, cottonwoods and sycamores, other marginally colorful trees like willows, walnuts, maples, elms, redbuds, smoke trees and deciduous oaks, may develop bland color. Mulberries and tulip trees, though early, are more reliable.

Sweetgums (which are also known as liquidambars) , flowering pears, Chinese pistaches and maidenhair trees (which are also known as gingkos) are the most reliable trees for color locally. Maidenhair trees turn remarkably bright yellow. The others can be various shades of bright yellow, orange, red or burgundy red, (although Chinese pistaches do not not often get burgundy color here). Crape myrtles have the potential for the same color range if conditions are right.

Posted on by tonytomeo · 4 Comments

Illegally Planting!

P80902K“ . . . others illegally planting whatever they wish . . . illegally.” Someone actually said that about the installation of our little Memorial Tree in Felton Covered Bridge Park. It was within the context of a review of the Park on Facebook, written by someone who has not stopped complaining about Felton since she moved here. It was forwarded to me quite some time ago by someone who documents and files such information that is relevant to hate crimes, and what is now known as ‘hate speech’, which is another completely different topic that we can not get involved with here.

Technically, it is accurate. The tree was planted without a permit, and does not comply with the standards of Santa Cruz County Parks. Compliance would have been quite an expensive imposition. It would have required an expensive #15 (15 gallon) tree, outfitted with lodgepole stakes and straps. The overworked gardener would have needed to take time from his busy schedule to install it. Because the irrigation system to the site is now defunct, the gardener would have needed to irrigate the tree until it got established. It was easier, much less expensive, more horticulturally correct, and socially responsible for us install the tree and maintain it on our own. Call 911 if you must.

There are of course reasons why we should not plant trees or other plant material in parks and public places. We do not want to make more work for gardeners, interfere with the landscape plan, or add plants that are inappropriate to the situation. This Memorial Tree happened to have been planted with the supervision of a horticulturist and arborist (me), on the exact spot where another oak that was installed with the original landscape had been knocked down by a car. Otherwise, in most places in Felton Covered Park, vegetation management, including the removal of large volumes of biomass and invasive exotic specie, should be the priority. (Unfortunately, the overgrowth of invasive exotics is mostly within a protected environmentally sensitive riparian zone.)

The little Memorial Tree has quite a history, even though it is still a baby. I do not want to post links to all the other updates about it, but I can post this link to another article that contains another link to others . . . Oh, you can figure it out if you like: https://tonytomeo.com/2018/04/15/memorial-tree-update-to-the-updated-update-etc-the-sequel-to-all-those-other-sequels/ .

Posted on by tonytomeo · 24 Comments

Six on Saturday: Gazania

 

Gazanias were not planned. The English daisies that were planted last spring as warm season annuals that might hopefully continue as perennials succumbed to rust. Seriously! This rust was nasty! I had no idea that English daisy was so susceptible to rust! They were so ugly that they needed to be removed. They were replaced with the gazanias a bit more than half way through.

Gazanias are not the flashiest of choices for the prominent planters that they went into, but they work. If they continue to bloom through winter, they can stay as long as they like. If they stay long enough to get bald spots, we can trim around the edges and plug the scraps back into the bald spots. I would rather put a bit of effort into maintaining them than replace them as the seasons change.

These pictures were taken about two weeks ago, along with the picture of the gazania that was posted last week. For some unknown reason, the gazanias are presently taking a break from blooming.

1. White is actually not my favorite color for gazanias. Yes, white is my favorite color. I just think that gazanias are at their best in brighter colors like yellow and orange. This white is not the best anyway. It looks like very pale yellow to me.P80922

2. Yellow, in conjunction with orange, is one of the two classic colors for gazanias, and is one of my two favorites . . . in conjunction with orange.P80922+

3. Orange is the other half of the caption to the picture above. (Just read the same caption, and switch ‘yellow’ for ‘orange’, and ‘orange’ for ‘yellow’.)P80922++

4. Pink might really be light burgundy. It was a bit darker when it first bloomed. This might be one of those colors that only girls can identify.P80922+++

5. Yellow with red stripes looks like something that blooms in the garden of Ronald McDonald.P80922++++

6. Cream with burgundy stripes looks like something that blooms in the garden of a clown with slightly more discriminating taste.P80922+++++

This is the link for Six on Saturday, for anyone else who would like to participate:

https://thepropagatorblog.wordpress.com/2017/09/18/six-on-saturday-a-participant-guide/