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Western Cottonwood

Western cottonwood is better in the wild than within refined gardens.

The brilliantly clear yellow autumn color of Western cottonwood, Populus fremontii, is best in the higher elevations and inland areas of its extensive range, which spreads from the coast of California to the Rocky Mountains and as far south as Mexico. Although it thrives in local riparian areas, particularly Coyote Creek and Guadalupe River, mild temperatures in both summer and winter do not allow it to get as colorful as it does in Nevada. It is almost never planted intentionally, but has a sneaky way of sometimes growing from seed in well watered gardens.

The bad news is that Western cottonwood grows big, fast and aggressively. The shallow roots displace pavement, compete with other desirable plants and damage septic and drainage systems. Large trees produce an abundance of annoyingly fuzzy seeds that adhere to anything. After causing so much damage, Western cottonwoods survive only a few decades, leaving big deteriorating carcasses that need to be removed before collapsing. Consequently, Western cottonwood is really suitable only for large open areas or in the wild.

Mature trees can be more than fifty feet tall and more than half as broad. Their somewhat thick leaves are almost triangular, with paired angular lobes on the sides and blunt tips. ‘Nevada’ is a male cultivar that does not produce fuzzy seeds.

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Autumn Foliar Color Within Mild Climates.

Pistache does not need much chill to develop exquisite foliar color.

Cooler climates may not have so much annual flower color to choose from at the end of summer, but have more autumn color from trees and a few shrubs and vines. The weather is of course different every year, so autumn color is never predictable. Just as some of the typically colorful trees may not be so spectacular every year, some of the more mundane trees may be surprisingly colorful if the weather is just so.

In milder climates, sweetgum (Liquidambar), flowering pear and Chinese pistache are generally the most reliable for the most color as the weather gets cooler. All three exhibit a good range of color, from clear yellow, through orange and bright red. Sometimes, particular colors are more prominent, or even exclusive. For example, Chinese pistache can be completely orange without yellow or red. Some cultivars of sweetgum specialize in particular color ranges. For example, ‘Burgundy’ turns dark red or purplish red without much yellow or orange.

In cooler climates, maples color well. Sugar maple is perhaps the most colorful, comparable even to sweetgum. Unfortunately, it does not hold onto its foliage as tightly, and soon looses it to slight wind or rain. Red maple colors just as reliably, but is more red and brown with less yellow and orange. Norway maple typically turns yellow or somewhat orange. Silver maple turns only dingy yellow, but gets big enough to make quite a show.

The best bright yellow is probably provided by maidenhair (Ginkgo biloba) tree. Birch, honey locust, tulip tree, fruitless mulberry, some willows and poplars can be comparable if the weather turns cool suddenly. Redbud, dogwood, hawthorn and flowering cherry are more subdued shades of yellow, but are grown more for their spring flowers anyway. Persimmon probably provides the best brightest orange foliage, followed by abundant and comparably bright orange fruit!

Some ash, some oaks, Chinese tallow tree, parrotia and dawn redwood all provide their own flavors of autumn color. Dawn redwood and pin oak actually turn simple brown, which some people think makes the trees look dead! Raywood ash turns a nice burgundy red or purplish. However, the old fashioned Modesto ash (which is a type of Arizona ash) turns as bright yellow as fruitless mulberry does. Not all crape myrtles have good fall color, but some are as colorful as sweetgum is. Various hazels, spiraeas and viburnums are colorful shrubbery in autumn. Wisteria vines, which are known more for their colorful spring flowers, turn yellow.

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Horridculture – Queen Nefertiti

Ancient Egyptian influence within a modern landscape

Queen Nefertiti, during the fourteenth century BC, was the most famous and most influential Queen of Ancient Egypt. She wore a cool hat too. It was sort of cylindrical shaped, but also tapered so that it was wider on top, sort of like a funnel. So, not only was Queen Nefertiti very influential during her time, but she remains influential in modern mow, blow and go gardening. So-called ‘gardeners’ everywhere still shear shrubbery into the shape of Queen Nefertiti’s cool hat! Not many species of shrubbery are exempt. Just about any get shorn into a sort of cylinder shape that is wider on top, sort of like a funnel, but also tilted in one direction or another, just like Queen Nefertiti’s hat tilts toward the back. Such shearing typically deprives blooming shrubbery of its bloom, but bloom is apparently not a priority, as long as the ancient Egyptian form is maintained. The picture above includes four oleanders, a Texas sage and what seems to be two trailing lantana. The Texas sage and trailing lantana are more cylindrical than hat shaped, but the hat shape of the three oleanders is impossible to deny. It is such a universal technique that is performed so precisely wherever vegetation is maintained by mow, blow and go gardeners that it seems to be taught in classes as standard procedure. I am significantly more educated in horticulture than most mow, blow and go ‘gardeners’, but I somehow missed this in my curriculum. Instead, I learned that vegetation should be allowed to exhibit its natural attributes, such as form, texture, bloom and so on. If I wanted a herd of ancient Egyptian hats in my garden, I would probably construct something that resembled ancient Egyptian hats from an inert material that never needs shearing or irrigation.

the Original
a modern version of an ancient Egyptian fashion show
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Japanese Honeysuckle

Honeysuckle is more fragrant than colorful.

Bloom should be most abundant during late spring and summer. Within this mild climate though, it often continues sporadically through autumn. Japanese honeysuckle, Lonicera japonica, is presently blooming nicely in some areas. Its trusses of ribbony creamy white flowers fade to pale yellow. Although unimpressively colorful, they are alluringly fragrant.

Japanese honeysuckle here is almost exclusively Hall’s Japanese honeysuckle. It might be recognizable by a cultivar name of either ‘Hall’s Prolific’ or ‘Halliana’. Some botanists consider halliana to be a variety rather than a cultivar. (Variety names are neither quoted nor capitalized like cultivar names.) ‘Purpurea’, with dark but not purplish foliage, is rare.

Japanese honeysuckle, like star jasmine, is a vine that can be a ground cover. As a vine, It can climb more than thirty feet high. Unfortunately, it sometimes overwhelms shrubbery and small trees. Its twining stems can constrict the stems of other vegetation that it wraps around. As ground cover, it can get three feet deep. Leaves are two or three inches long.

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Dried Flowers Were Formerly Fresh

Some faded bloom retains striking form.

All sorts of flowers bloom through autumn as well as winter. Honeysuckle still exudes its richly sweet summery fragrance. Honestly though, most flowers bloom for spring or early summer. They finished a while ago, and are now going to seed. Even flowers that bloom repeatedly do so less now. This is when floral design can get creative with dried flowers.

Straw flower, statice and globe amaranth are among the most familiar of all dried flowers. While still fresh, they already seem to be dry. They do not seem to change much as they dry. They neither fade nor wilt very much. Only their stems sag. If they hang upside down as they dry, their stems remain straight as they stiffen. Their foliage is likely unimportant.

Rose and hydrangea are among less conventional dried flowers that actually look dried. They fade and shrivel, but somehow develop a distinct visual appeal. Amaranth, celosia, lavender and globe thistle fade and wilt only somewhat. Because amaranth stems curve downward anyway, they need not hang to dry. Lavender stems can dry before collection.

Pampas grass and cattails are big and bold dried flowers that were popular in the 1970s. Hairspray should contain dislodged fuzz that otherwise escapes pampas grass bloom. It can also prevent cattail bloom from bursting to disperse its fuzz. Cattails typically grow in marshes, where they are difficult to reach. Pampas grass foliage inflicts nasty paper cuts.

Some dried flowers are better dried than fresh. Some are mere by products of bloom that deteriorated earlier. Dried floral trusses of lily of the Nile, without their seed capsules, are quite striking. So are dried floral spikes of New Zealand flax and some yuccas. They are merely deadheading debris otherwise. Even dried queen Anne’s lace is worth recycling.

Dried flowers do not necessarily need to be of floral origin. Dried bird of Paradise leaves develop weirdly twisty form. Colorful deciduous leaves can be as colorful in the home as in the garden. So can firethorn and cotoneaster berries. Twigs of ‘Sango Kaku’ Japanese maple and red twig dogwood provide color with form. These are only obvious examples. There are many more to experiment with.

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Santa Cruz II

Begonia boliviensis ‘Santa Cruz’

Begonia boliviensis ‘Santa Cruz’ is significantly bigger than it was when I wrote about it three months ago. If I had known that it would have performed so well, I would have groomed it for better form. It grew upright at first. I just let it do so because I wanted to make a cutting from the tip when it got pruned back. However, because it leaned over and branched as it should, it did not get pruned back. It could have developed a better and lower form if I had tended to it better, but I am too pleased with it now to complain that it is a bit more upright than it should be. I do not mind that I did not get a cutting from the primary stem that I did not cut back because there are now many more stems that I can get cuttings from, simply be grooming out a small bit of superfluous growth from within. I could get many more than I want if I were to actually prune this specimen back for winter. It is getting to be too exemplary to cut back for winter, though. Nor do I want to leave it out to get frosted, as I might do with other begonias. The horticulturist who procured it will shelter it from frost, and perhaps groom it a bit after winter, but otherwise try to retain as much of this growth as possible for a head start next spring. I am curious to see what it does. Will it shed most of this growth as it resumes growth from below next spring; or will it grow from near the tips of where it stopped growing this year? I did not expect to be so impressed by this modern cultivar of Begonia.

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SQUIRREL!

This is no ordinary squirrel. It is likely a ground squirrel, since, as such a designation and its presence on the ground suggest, it likely lives in the ground. That divot on the ground in front of it seems to be a burrow, presumably where it lives. It seems to be rather plump for a ground squirrel. Perhaps it could be a common squirrel who lives on or under the ground because it is too plump to live in trees. I have no idea. We did not get any more acquainted than necessary for me to get this picture from a significant and what I considered to be safe distance. Although a squirrel like this could inflict major injuries, I doubt that it can move very fast. It reminds me how fortunate that we do not contend with such large rodents at work. Gophers are small but very destructive to the vegetation within our landscapes. I do not want to know how much damage this squirrel or whatever it is is capable of. It must consume a considerable volume of roots, foliage or whatever it wants to eat. Supposedly, such squirrels, whether in trees or in the ground, are not as destructive as gophers, but I do not know what to believe. I suppose that some wildlife is more obviously worse. Fortunately for us, deer avoid our landscapes, though we could do nothing to exclude them. No one knows why. Much larger herbivorous wildlife that inhabit other regions, such as the Pacific Northwest are more voracious than deer. I can not imagine the extent of damage that just a single moose is capable of. Nor do I know how such wildlife can be excluded from landscapes. It seems to me that a moose can probably go wherever it wants to.

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Six on Saturday: Away Again

It is a long story. To be brief, Rhody and I are again far away from work and home, near Phoenix in Arizona, without time to write.

1. Prosopis velutina, velvet mesquite is supposedly the most common mesquite here and is also native. It develops sculptural form, but only light shade, which seems to me to be substandard for such a warm climate. Perhaps it is common because it is undemanding.

2. Parkinsonia florida, blue palo verde is also native like velvet mesquite, but is only one of the two most common palo verdes here. Foothill palo verde is the other. Both develop sculptural form and light shade, also like velvet mesquite, and are a bit more sculptural.

3. Lantana montevidensis, trailing lantana is the same common type that I occasionally work with at home, but seems to be happier and more colorful here, even while shorn as these weirdly compact globs, and humiliatingly deprived of its naturally sprawling form.

4. Calliandra californica, Baja fairy duster seems to be more prevalent here than it is in California. Of course, Baja California is a very big and very diverse region to the south of the State of California that I am familiar with. I suspect that this is a hybrid or a cultivar.

5. Leucophyllum frutescens, Texas sage, like so much of the flowering shrubbery here, is shorn too abusively to bloom as well as it likely should. Its silvery gray foliar color is also compromised. I can not even guess what its natural form or branch structure should be.

6. Rhody is so tolerant of my interest in unfamiliar vegetation. His only interaction with it involves just ‘claiming’ it. I absconded with a handful of seed pods and three seedlings of velvet mesquite, and a seedlings of Baja fairy duster (which will get a different name).

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/

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Elderberry

Blue elderberry is native here.

Although almost never planted intentionally, elderberries occasionally appear in strange places, wherever their seeds get dropped by the birds or rodents who eat their berries. The blue elderberry, Sambucus mexicana / caerulea, is native and most common between California, British Columbia and the Rockies. The American elderberry, Sambucus canadensis, is more common elsewhere, and also appears in the west where it had historically been imported for berry production. Some modern cultivars (cultivated varieties) with gold, bronze, or lacy foliage are actually related to European elderberries.

Except for compact cultivars, elderberries grow rampantly to about fifteen feet tall and wide. Aggressive pruning in winter keeps them looking fuller and more densely foliated. Overgrown plants can be rejuvenated by getting cut to the ground. The big leaves are divided into seven leaflets that are two to six inches long. Blue elderberry foliage is softly serrate and a bit more variable, with five to nine leaflets that may be as short as one inch.

Wide flat trusses of pale white flowers that bloom in late spring or early summer produce small but potentially abundant and richly flavored berries. Blue elderberries are dark blue dusted with white powder on trusses to about six inches wide. American elderberries are darker and more purplish on trusses that can be wider than eight inches. (Red elderberries are toxic!)

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Birds Enjoy Colorful Fruits and Berries.

Brightly colored berries are an incentive for birds to disperse the seed within.

Colorful fruit and berries that ripen in autumn and winter bring more than their own color to the garden. They also attract all sorts of birds. Some birds want to fatten up on the earlier and typically more abundant and colorful fruit before migrating south for the winter. Other birds that stay through winter eat fruit and berries that develop over a longer season, after the migratory birds are gone.

The most abundant and brightly colored red fruit of pyracantha (or firethorn) appeals to the early migratory birds that want to fatten up fast and get south. Cotoneaster, toyon and English hawthorn are not quite as flashy, but appeal to the same crowd of migratory birds. These sorts of plants get their colorful fruit early on in the season, but are then stripped of it rather efficiently.

The fruit of pyracantha, cotoneaster and toyon is not often very messy since almost all of it gets consumed; but the birds that eat it can be remarkably messy before they fly south. Coincidentally, these three plants are often grown as informal hedges and screens around the perimeters of large parking lots, so the mess is a traditional nuisance for many parked cars this time of year.

Chokeberry and elderberry ripen early enough for the migratory birds, but do not get devoured so efficiently because they are not so brightly colored. Migratory birds seem to prefer bright red or orange berries, so are likely to leave black chokeberries and blue elderberries for overwintering birds, which stay through winter. Strawberry tree, although not very productive, appeals to both crowds, and anyone else who might be interested in their fruit, by producing bright red berries throughout the year.

Persimmon, holly, loquat, some mahonia and some crabapple are even a bit more selective, by ripening their fruit later in autumn and winter after the migratory birds are gone. Pomegranate fruit splits open in the middle of winter, exposing a buffet of juicy red berries with meaty seeds for anyone who hasn’t gone south for the winter. Many pittosporums do the same, but without the colorful advertisement. Of course, most of us want to get our persimmons, loquats and pomegranates before the birds do!

Citrus such as lemons, oranges, grapefruits and mandarins that ripen later in winter do not attract birds, so we only need to share these fruits with our friends and neighbors. Citrus are colorful enough on their own anyway.