Concrete is one of the most common of landscape materials. There are probably more landscapes that include concrete of one form or another than there are landscapes that include lawn, and most landscapes include lawn. There are more landscapes that lack shade trees than there are without concrete. We do not notice it much because, once it is installed, we do not do much to it.
Concrete gets poured into our gardens as a liquid like slurry of cement and sand and gravel aggregates that cures into a stone-like solid. It is not ‘cement’, but cement is the component that binds it all together. Almost all modern concrete is reinforced with steel of some sort to prevent it from breaking as easily as old unreinforced pavement does. It can be as permanent as we want it to be.
Concrete is used to pave patios, driveways and sidewalks, and gets molded into stairs, curbs, and the foundations and slabs for our homes and garages. The visible surfaces of concrete can be colored, textured or outfitted with stone to look better in the landscape than simple bare concrete. It is relatively ‘low-maintenance’, but should sometimes get swept or blown if debris accumulates.
Concrete is a versatile and durable material, but is no more perfect than anything else in the garden. It inhibits percolation of moisture and gas exchange in the soil below. Because it is inflexible, it fractures if displaced by roots or settling soil. Glare from paved surfaces can enhance sun exposure enough to roast sensitive foliage and exposed bark. Certain foliar debris can stain concrete.
Concrete limits plant selection. Conversely, the presence of mature trees limits the location and quantity (surface area) of concrete to be installed. Trees with aggressive roots or big trunks should not be planted so close to concrete that they will have no choice but to displace it. Root barriers help with mid sized trees, but are not always effective forever. Dogwoods,Japanese maples and other plants with sensitive foliage or bark, are more vulnerable to exposure if concrete around them is also exposed.
Apparently, the warnings were effective. 

However, the most effective weapons of all were mind control techniques. Halston Junior used them merely for self defense, by convincing his captors that he was too cute to be euthanized. It could have been much worse if he had not been so mentally compromised from his ordeal.
Nurseries are full of plants for sale. That is their business. They sell plants, and whatever plants need. With a bit of money, it is easy to purchase plants to compose an exquisite landscape. That is important to landscape professionals who make a business of composing landscapes to beautify the environments in which they work.






We think of rhododendrons and azaleas as being from cooler and moister climates. After all, that is where they do best. Yet, there does happen to be a native western azalea, Rhododendron occidentale, that lives in the Sierra Nevada and coastal ranges from San Diego County to just southwest of Portland, Oregon. (Azalea and Rhododendron are varied specie of the same genus.)
This is one of those warm season annuals that we do not hear much about. Verbena looks something like lantana, but rather than maturing into a nice shallow ground cover or low mounding shrub with a bit of staying power, verbena lasts only until frost next autumn. The blooms are a bit larger. The leaves are a bit greener. They stay lower than a foot, and get only a few inches wider than tall.
This is not a sequel to my rant ‘Real Deal’ from yesterday. It is just another rant. I should write more such rants; and I am actually considering designating Wednesday, as the day for discussion of the various hooey in horticulture, from some of the many fads and gimmicks to the lack of professionalism in the horticultural industries. Wednesday is the day between my current gardening column articles and the gardening column articles that are recycled from last year. There is certainly no shortage of hooey to discuss. I have been mostly polite about it so far. I sometimes wonder why I should bother with politeness. I sort of think that some would prefer more honesty than such unfounded pleasantries. Well, I can give more thought to that later. There are still a few more pleasant topics that should be discussed as well. For now, I will continue: