Posted on by tonytomeo · 28 Comments

Six on Saturday: Revenge of Halston Junior

The saga continues. This time, descendants of Halston have invaded a bed that was outfitted with a layer of gopher wire that was intended to prevent such invasion. This apparently ineffective gopher wire now provides a layer of defense for the invaders. Attempts to cut through the wire in order to set traps causes tunnels to collapse, so that there are no intact tunnels in which to set the traps. These pictures are several days old. Not many nasturtiums remain. Some of the adjacent scarlet sage are missing also.

1. Nasturtiums grow like weeds. Perhaps they are. Nonetheless, they are among my favorites. These were supposed to be a mix of colors, but are mostly this vivid orange. I could not complain.

2. Is this very pale yellow or creamy white? Of the many nasturtiums that grew here from seed of mixed colors, this was one of only a few that were not the richly reddish orange shown above.

3. Bright yellow was about as scarce, with only two plants of this color. Another bloomed with rich red flowers; but I neglected to get a picture of it. I never met a nasturtium that I did not like.

4. This was a problem. The entire top of the stone wall had been occupied by healthy nasturtiums earlier. The small plant with yellow flowers to the right of this gap was just beginning to wilt.

5. This was below the gap. The main stem, which is now to the lower left, was chewed through. There was no attempt to hide the evidence, although other plants had been pulled underground.

6. Just in case there was any doubt about who the culprit was, this new volcano appeared nearby. Unfortunately, the gopher wire that was installed below this bed now impedes with trapping.

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/

Posted on by tonytomeo

Fern Pine

Narrow leaves resemble pine needles.

It is neither a fern nor a pine. Fern pine, Podocarpus gracilior, can be a tree taller than fifty feet, and half as broad, but is often a shorn shrub or hedge that can be kept less than eight feet tall. Stems are limber enough while  young to be espaliered. The finely textured evergreen foliage is somewhat yellowish out in full sun, and darker green in partial shade. Individual leaves are as long as two and a half inches, and less than a quarter inch wide, and hang almost like fat pine needles. Some but not all mature trees can drop a bit of messy fruit with hard pits that are a bit larger than those of cherries. Bark gets distinctively blotched as it ages. The deep roots can be remarkably complaisant with concrete. Outer growth can get damaged by the harshest frosts every few winters or so, or roasted by hot dry heat every few summers.

Posted on by tonytomeo · 8 Comments

Humidity And Wind Affect Heat

Heat is more than mere temperature.

Gardening is not so much fun when the weather gets as warm as it has been recently. It is more comfortable to stay inside with air conditioning, or at least where it is shadier. The plants out in the garden are on their own. Except only for those that are potted, they do not have the option of coming in out of the heat.

Most plants actually do not mind the sort of heat that is uncomfortable for us. Some actually enjoy it. The problem is that heat often occurs in conjunction with other weather conditions that can collectively become really unpleasant for plants.

Minimal humidity makes otherwise unpleasantly warm weather more comfortable for us, but can desiccate foliage that prefers more humidity. Japanese aralia, fuchsia, rhododendron, split-leaf philodendron and many other plants that should not mind warmth can get roasted if warm weather is also too dry. Because sunlight enhances the process, exposed foliage is much more susceptible to damage. To make matters worse, sunlight is more penetrating through clear dry air.

Wind that makes us feel a bit cooler in warm temperatures can likewise cause desiccation as it draws more moisture from foliage. Finely textured plants like Japanese maple, many ferns and some grasses, are particularly susceptible. Offshore wind, like the famous Santa Anna Winds of Southern California, are the worst, because they come in both hot and dry from more arid inland areas, combining all three factors of minimal humidity, heat and wind.

Many of the plants that are susceptible to damage from heat happen to be tropical or subtropical plants that typically enjoy heat as long as the air is humid and still. Others are ‘understory’ plants that naturally live in the shelter of higher trees, so do not like direct sun exposure or wind. Yet, even substantial trees, like fern pine (Podocarpus spp.) and even redwood, can get a bit roasted if the weather gets hot, dry and windy enough.

Conservation of water makes warm weather even more uncomfortable for sensitive plants. They really want more water to keep their foliage and stems well hydrated. Hosing ferns and grasses when things get really hot helps to cool the foliage, and briefly increase the ambient humidity. Because thin young bark is more susceptible to sun-scald in hot weather, pruning that would expose more bark should be delayed until the weather turns cool again.

Posted on by tonytomeo

Horridculture – Satellite Dish

After a scarcity of recycled articles that conformed to the Horridculture meme for Wednesdays, there now seems to be a surplus!

tonytomeo's avatarTony Tomeo

P80613

Satellite dishes, tater tots, fish sticks, soldiers, flat tops, gobstoppers, corks, oil tanks and trip hazards are just some of the many but less objectionable names that my colleague down south and I have developed for what should be good shrubbery, trees, vines or whatever that so-called gardeners got to with their hedge shears. Tater tots are usually Heavenly bamboo shorn into stout cylinders. Fish sticks are the same, but taller, narrower, and often composed of Podocarpus macrophyllus. Corks are commonly breath of Heaven, but could be just about anything shorn to be somewhat cylindrical, but narrower down low, and wider on top. Trip hazards are ground cover plants like creeping California lilac or creeping cotoneaster, shorn into absurd low hedges next to sidewalks. Gobstoppers could be just about anything, but tend to hang over the curbs in parking lots, ready to impale a radiator grill with a gnarly stub…

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Nasturtium

Nasturtium bloom is sensitive to aridity.

Whether feral or planted intentionally, nasturtium, Trapaeolum majus (which is actually a hybrid with two other species) is a delightful flower that just about everyone appreciates. Its eagerness to self sow and possibly naturalize in riparian situations attest to how easy it is to grow. Seed for many varieties is readily available. Feral plants provide feral seed.

Bloom of domestic nasturtium can be various shades, tints and hues of yellow, orange or red. Flowers can be striped or blotched with colors of the same range. Some are double. The palest yellow is almost creamy white. The darkest red is almost brown. Feral plants, after a few generations, generally revert to blooming with simple bright orange or yellow.

Plants are more or less annual, but can replace themselves almost as readily as they die out. Those that perform through spring and summer succumb to cooling autumn weather, as their (feral) seedlings begin to replace them for autumn and winter. Those that perform through winter may succumb to frost where winters get cool, but also self sow feral seed for next spring.

Posted on by tonytomeo · 4 Comments

Humidity Is The Other Weather

Some delicate foliage prefers more humidity.

It is difficult to always ignore the weather. Regardless of how pleasant it typically is here, it sometimes gets warm or cool. It occasionally gets hot or cold. Rain is wet and perhaps messy. A breeze is comforting while the weather is warm. Strong wind can be damaging. However, humidity is one major component of local weather that gets little consideration. 

Humidity gets more consideration in climates that are either uncomfortably humid or arid. Some parts of Florida get famously humid and hot simultaneously during summer. Some flora and insects enjoy such weather. Unfortunately for the rest of us, humidity enhances the already unpleasant heat. Locally, hot or warm weather is rarely bothersomely humid.

Similarly, local weather is rarely unpleasantly arid (lacking humidity). This is a chaparral climate, which is ‘semiarid’. Relatively minimal humidity makes heat a bit more tolerable than it would be with more humidity. Yet, humidity is generally sufficient to sustain foliage that would desiccate in a more arid desert situation. Actually, this is an excellent climate.

Although, it is not perfect. Flora and fauna have different standards for exemplary climate and weather. The relatively minimal humidity that makes uncomfortably warm weather a bit more tolerable for people and animals is much less appealing to some plants. Except for those that are native to desert or chaparral climates, most plants prefer more humidity.  

Many popular plants are understory plants, that naturally live in the partial shade of taller vegetation. With shelter from desiccating arid wind and harsh sunlight (to enhance heat), most do not mind heat. Otherwise, foliage might roast. Those with finely textured foliage, such as astilbe, ferns, grasses and some Japanese maples, are particularly susceptible.

Some tropical and subtropical plants, such as split leaf philodendron and fuchsia, prefer to be understory plants here, even if they would prefer more exposure within their natural ecosystems. The shelter provided by more resilient vegetation compensates for deficient humidity. Furthermore, adequate irrigation promotes healthy hydration of delicate foliage. 

Posted on by tonytomeo · 2 Comments

Oasis

California fan palm, which is also known as desert fan palm, happens to be my favorite palm, and coincidentally, happens to be the only palm that is native to California. I have written a bit of trivia about it since this recycled article posted three years ago.

tonytomeo's avatarTony Tomeo

P80630KWhat are they doing out there, in those two pots in the island of such a vast parking lot? It is hard to say from this distance. They are so isolated. They might be happy and healthy summer blooming annuals. They might just be weeds. They could be plotting World domination. Plants can do some weird things in isolation.

Mexican fan palm is the most familiar palm in Los Angeles. Some know them as skydusters because they are so tall and lanky, and do not seem to have anything better to do than lazily brush against the undersides of clouds as they float by. In Los Angeles, there are not many clouds to keep them busy, and there is not even much smog anymore. Mexican fan palms certainly do not make much shade, and because they are so tall, their little shadows land in neighbors’ yards. They are so tall…

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Spontaneous Limb Failure

This is just as relevant now as it was when this article posted three years ago, but happened to be relevant a bit earlier this season than it was then.

tonytomeo's avatarTony Tomeo

P80701It is as scary as it sounds. Well foliated limbs or entire trees really do fall spontaneously during the calmest of warm weather. It never fails to frighten anyone who witnesses it. Those who witness it always express the same difficulty with trying to explain it to those who did not witness it, as if they know that no one will believe them.

Several people heard this cottonwood limb fall onto a bridle path in Felton Covered Bridge Park. It is not a particularly large limb. The diameter about a foot above the flared union is only about seven inches.P80701+

Yet, even this relatively small limb is seriously dangerous when it falls from above, and from such a height.P80701++

A much larger sycamore limb that was almost two feet in diameter fell nearby a few years ago. It was like a full sized tree falling from the sky!

What makes…

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Posted on by tonytomeo · 20 Comments

Six on Saturday: Oops!






These Six for this Saturday are a minor collection of embarrassing but otherwise useless images that are perhaps too amusing to merely delete. Some had been accumulating for quite a while. The first may not seem like the worst, but is associated with a more embarrassing picture from another ‘Six on Saturday’ of last April. That entire procedure was just too dysfunctional to write about. The fifth picture was actually planned, and should actually work, regardless of how silly it looks here now.





1. Black cherry is so rare here that I met only one in my entire career; and sadly, it needed to be removed. What I did not show at the time was how close this bit got to an adjacent parked car.










2. Arborists who cut down bigger trees for us are remarkably proficient. However, after removing this canyon live oak without any damage, they piled the firewood onto one of my hydrangeas.










3. It made sense at the time. There are two rows of canned plants on top of this retaining wall. Roses are in the sunnier outer row. Now, they need to be deadheaded; but I can not reach them.










4. Land is famously expensive here. Nonetheless, we get it delivered for free whenever we want it. The quality is good, and on rare occasion, it comes with surprises such as callas or narcissus.










5. This ungrafted flowering cherry tree would not stop suckering. Now that it is succumbing to scald, one of its own suckers is groomed and staked to replace it. This stake is nailed to the tree.










6. While unused during the past year, the buildings at work were neglected more than the landscapes were. No one was here to tell us what this Boston ivy was doing on this exterior stairwell.










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/






	



	



			
				



	
		

			

				Posted on  by tonytomeo									 · 
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Chinese Elm
					


	

	

	

		

Intricately blotched bark distinguishes Chinese elm.





Since the Dutch Elm Disease (DED) epidemic that killed so many old and stately American elm trees so many years ago, the old fashioned Chinese elm, Ulmus parvifolia, has been unavailable in nurseries. That is why there are only old and middle aged trees, and maybe a few feral seed grown trees. Chinese elm is not bothered much by the disease, but is a vector. ‘Drake’ is a modern DED resistant cultivar, but it has a very different personality, with a more upright and symmetrical structure.





The elegantly lanky trunk and main limbs can be quite curvacious, with distinctively blotched gray and tan bark. The deciduous foliage can be messy in autumn as it falls slowly and may linger through December. The neatly serrate leaves are only about an inch or two long, and half as wide. Mature trees can be more than fifty feet tall.