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Horridculture – Pseudopalm

Strelitzia nicolai, is giant bird of Paradise. Unlike the more familiar bird of Paradise, with basal foliage and its distinctive orange flowers, this species develops several tall trunks and less colorful but interestingly large white flowers. We recycled several into one of the landscapes here from a home garden in Morgan Hill about two years ago. Originally, they were three somewhat mature groups, with rather tall trunks. Then, they were divided into individual trunks and pups. Ultimately about sixteen were installed into the landscape, with a few spare pups canned as spares, just in case some of the others do not recover from their division. I predicted that those with tall trunks would not last long before replacing themselves with basal growth, and then shedding their unusually tall trunks. Not only are they not developing basal growth yet, but their upper foliage on top of their lanky tall trunks is actually growing and developing into new foliar canopies. They sort of look like silly palm trees that are getting less silly as they continue to grow. I mean that they actually look rather appealing, and probably look more appealing to those who do not know what they should look like. They seem to be pretending to be faux palm trees. I can do nothing about their behavior, and even if I could, I would not. I want to see what they do next. I suspect that they will eventually perform as expected. I also suspect that, because they are already so tall, that, for as long as they retain it, their upper foliage will never be as lush as it would be if lower. That is normal for the species, and how those who maintain such specimens know when to cull the taller trunks by cutting them to the ground.

Posted on by tonytomeo

California Bay

California bay is not culinary bay.

Grecian bay is, as its name suggests, endemic to Greece and the Mediterranean region. California bay, Umbellularia californica, is native to California and southwestern Oregon. The two are very different. Although California bay can be useful for culinary application, it is twice as pungent. For replacing Grecian bay in recipes, half as much should suffice.

California bay also grows much larger and more irregularly than Grecian bay. With good sun exposure, it grows more than forty feet tall. Where it competes for sunlight in forests, it can grow a hundred feet tall. Domestic trees typically develop on single vertical trunks. Wild trees might develop several leaning trunks. Foliar canopies are densely evergreen.

California bay is uncommon within urban home gardens because it is so big and messy. It is more likely to inhabit rural gardens either by self sowing or by being there first. Some old trees that grew from stumps of older trees can develop basal decay. Stumps might be difficult to kill. Foliar and floral detritus inhibits smaller vegetation and seed germination. Some abhor the foliar aroma.

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Arboriculture Is Very Specialized Horticulture

Arborists specialize in the big trees.

Horticulture is as diversified as horticultural professionals. Nurserymen grow horticultural commodities. Landscape designers plan installation of the commodities into landscapes. Landscapers construct the landscapes. Gardeners maintain them afterward. Florists use floral commodities. Arborists specialize in arboriculture, which is the horticulture of trees.

Arboriculture is necessary because trees are so substantial. Although most arborists can work with smaller trees, larger trees are their priority. Other horticultural professionals are neither qualified nor able to work with such trees. Similarly, arborists are too specialized to engage with landscape design or floristry. Arboriculture is truly an intensive discipline.

Many garden enthusiasts maintain their own trees while such trees are somewhat small. Some trees, such as dwarf citrus and Japanese maples, stay small. However, most trees eventually grow beyond reach from the ground. Even within gardens that lack gardeners, arborists might become necessary. This is certainly not something to be negligent about.

When pansies get tired in spring, gardeners can replace them with petunias for summer. Trees are completely different. They are the most substantial and persistent vegetation in their respective landscapes. Some can survive for a few centuries. The consequences of their neglect can be disastrous. Arboriculture is crucial to the safety of their environment.

The importance of arboriculture typically becomes more apparent during wintry weather. Rain destabilizes roots. Wind weakens the integrity of limbs and trunks. Generally, trees become messier and more hazardous than at other times of year. However, arboriculture is a concern throughout the year. Spontaneous limb failure is more likely during summer.

Besides, several procedures for certain trees are more appropriate during other seasons. Furthermore, mitigation of potential problems is easier before they become emergencies. Information about arboriculture is available from the International Society of Arboriculture or ISA. Their website, which also provides a list of certified arborists, is at isa-arbor.com.

Posted on by tonytomeo · 23 Comments

Six on Saturday: This

“This” is the first word of each of these six entries for Six on Saturday this week. There is not much variation among the coast live oak, coastal redwood, California bay, California black oak, big leaf maple and whatever else might be visible in these pictures. Half these pictures happen to feature specific coast live oaks. Therefore, I omitted botanical names. I wanted to show some of what is happening at the new home site, but there is not much to show, and there may not be much to show for a while, except for Rhody.

1. This is where the old home was. The forest wasted no time reclaiming its space. I miss the old home very much, but it was too deteriorated to salvage. I knew it was temporary.

2. This is where the new home will be built. It is less than fifty feet to the west, and faces more to the west instead of south. The upstairs office studio will face into the redwoods.

3. This lofty coast live oak stands high over the new home site, but leans to the north and away from where the house will be. It is the biggest of several big oaks in the grove here.

4. This silly coast live oak leans parallel to the driveway. The contrastingly vertical trunk to its right is the same that is on the right border of the first picture of the old home site.

5. This grand coast live oak arches elegantly over the driveway. It can be seen across the upper left corner of the previous picture. It is about perpendicular to the horizontal oak.

6. This is how I manage the overgrown and overly combustible vegetation here. It needs to be planned in accordance with the weather that has been too dry for much too long.

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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Narcissus

Daffodil are a type of Narcissus.

If their bulbs were planted when they became available as summer evolved into autumn, Tazetta Narcissus and their hybrids should begin to bloom about now, a bit prior to related daffodil and jonquil Narcissus. In cooler winter climates, bloom must wait until early spring. The most popular variety, ‘Paper White’ blooms with about five or six small clear white flowers clustered on top of foot tall stems surrounded by vertical and somewhat rubbery, narrow leaves. Other varieties have white or yellow outer petals, known as the ‘perianth’, or orange or white centers, known as the ‘cup’. All are good cut flowers that are quite fragrant.

Because it is best to leave narcissus foliage to yellow and abscise (shed) naturally after bloom and as weather gets warmer, ground covers that are deep enough to conceal their deteriorating foliage are practical companions. (For example, deteriorating narcissus foliage can be stuffed under healthy English ivy, where it can be hidden without being removed.) Ground cover also keeps the soil from being bare during summer and autumn dormancy.

Mature clumps of narcissus bulbs only need to be dug and divided if they become so crowded that they do not bloom as much as they should. They are easiest to dig immediately after foliage dies back and lies on the ground, when they are dormant but still easy to find. Dug bulbs should then be stored in a cool dry place until it is time to plant them late in summer. Bulbs should be planted about five inches deep and about five to eight inches apart, with good sun exposure. The largest bulbs with multiple buds (known as ‘noses’) bloom most abundantly.

If they are happy in their location, narcissus easily naturalize, even if they do not get divided occasionally. They get most of the water they need from rain, since they are mostly dormant before dry weather in summer. Gophers and deer do not bother them.

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Restorative Pruning

There is some good flowering quince in there, . . . somewhere.

Winter is the time to go wild in the garden, while plants are mostly dormant and not aware of what is going on. This is the time to tend to all the aggressive pruning that fruit trees and roses need annually, and to take care of overgrown deciduous plants that may not need to be pruned every year, but need it now. . . or may have needed it last year. . . or even a few years ago.

Regardless, if they are bare now, they are dormant. By the time their buds start to swell in spring, it will be too late, since they will no longer be dormant, and are likely to be damaged by overly aggressive pruning. Evergreen plants that can be sensitive to frost, like avocadoes and citrus, are the only ones that should not be pruned now, since aggressive pruning may stimulate new growth that is even more sensitive to late frost.

Plants that are too overgrown to be salvaged by tame pruning or typical shearing should be evaluated. Would a particular plant be more desirable if it were tamed? Is removal the only alternative to aggressive pruning? It is sometimes worth taking a chance that an obtrusively overgrown but otherwise desirable plant may actually be killed by aggressive renovation if it is about to removed anyway. For example, overgrown oleanders can be cut down instead of removed. Those that survive will grow into fresh new shrubs by the end of summer.

(The last paragraph of this recycled article is omitted here because the information that it provides about a particular horticultural event is very outdated.)

Posted on by tonytomeo · 4 Comments

Duckweed

Lemna minor is the common duckweed that infests the drainage pond. It is SO extremely prolific that I doubt that a huge herd of koi could eat it all. It appeared within the pond about as soon as the pond started to fill with water. It was undoubtedly brought by the first ducks to arrive while the pond was no bigger than a large puddle. It was no surprise, since duckweed inhabits most ponds. However, its profusion exceeds expectations. It can get so dense that it spreads into the area of the fountain. The turbulence of the dispersed water mixes some of the duckweed below the surface, but it does not stay there for long. If it does, its absence makes no noticeable difference to the density of what floats on the surface. It looks like a very tightly mown lawn. It is not so dense now that it has been frosted through winter, but is nonetheless more dense than expected. It typically disappears after the first few minor frosts, but has not done so yet, even after more minor frosts than typical. It lingers like some sort of unnatural pollution on the surface of the pond. YUCK! At this rate, it may not completely disappear before it is time for it to reappear during warming weather of late winter and early spring. It supposedly makes superb compost, but no one has time to scoop it off the surface of the pond. Besides, I doubt that it would not more than replace whatever we scoop, particularly since it already did so when we tried scooping in in the past. It seems like a harmless weed that is confined to the pond, but is so obnoxiously prolific and persistent within a pond that would likely be more visually appealing without it.

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‘Eureka’ Lemon

‘Eureka’ and ‘Lisbon’ lemons are indistinguishable.

‘Lisbon’ lemon was the original. It is still a common cultivar for orchard production of fruit for lemon products. Because almost all of its fruit ripens in winter, it can not provide fresh fruit continuously. ‘Eureka’ lemon, which is a mutant of ‘Lisbon’ lemon, may compensate. It is not as productive in season, but only because it also provides lemons out of season.

This complicates orchard harvest, but is justifiable by prolonging the supply of fresh fruit. It is more ideal for home gardens where only a few lemons are needed at a time anyway. Besides, seasonal abundance within home gardens can become too much of a surplus. ‘Eureka’ lemons are not as richly flavorful as ‘Meyer’ lemons, but are more acidically tart.

‘Eureka’ lemon trees, even on dwarfing understock, can eventually grow fifteen feet high. They are generally not quite as wide as they are tall. Their nastily sharp thorns are stout. Vigorous stems develop much longer and potentially dangerous thorns. Foliar fragrance is mild, but can be delightful during warm weather. Glossy evergreen foliage is aromatic when disturbed by lemon collection.

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Citrus Are Summery For Winter

Limes are the most diverse citrus.

Citrus trees are not like deciduous fruit trees. They are not marketable as bare root stock. They do not need winter pruning. Actually, winter pruning might initiate premature growth that is vulnerable to frost. Deciduous fruit trees remain dormant so can only dream about fruiting for next summer. Citrus trees are happily evergreen, and fruiting abundantly now.

Citrus somehow seem to be more summery than fruit that actually ripen for summer. Iced lemonade is so traditional for warm summer weather. Oranges for Christmas might seem to be out of season when they really are not. Although Mandarin oranges are perishable, other ripe citrus last for weeks or months. Several ripen sporadically throughout the year.

‘Valencia’ oranges, which are the traditional juicing oranges, might last through summer. They may sustain the belief that orange juice is a summery beverage. Several grapefruit cultivars can last about as long. ‘Eureka’ lemon is mostly seasonal, but also generates a few fruits throughout the year. ‘Bearss’ lime may be even more productive out of season.

With only one exception, all species and cultivars of citrus are of the same Citrus genus. Kumquats are of the Fortunella genus, but typically qualify as Citrus for simplicity. Citrus fruit is sweet, sour or bitter. Most familiar oranges are sweet. ‘Seville’ is a sour orange for marmalade. ‘Bouquet de Fleur’ is a bitter orange for infusing with Grand Marnier cognac.

Oranges, lemons, limes, grapefruits, kumquats and Mandarins are all very familiar. All of these fruits are available from grocery markets. Their trees grow in many home gardens. Tangerines are simply Mandarins or Mandarin oranges of the Americas. Pomelos, which are larger ancestors of grapefruits, are still uncommon. So are tiny and tart calamondins.

They are not the most unusual, though. Blood oranges provide tangy red juice. ‘Rangpur’ lime is a sour Mandarin orange that is as acidic as a ‘Eureka’ lemon. Tangelos combines the tartness of grapefruits with the sweetness of Mandarin oranges. Sweet limes lack the acidity of typical limes, so are for eating like oranges. These are merely a few examples.