It is hard to believe that such a delightfully robust and luxuriant tree like the Indian laurel, Ficus microcarpa nitida, can be so problematic. It looks so perfect, with lustrous evergreen foliage, like something that would be seen on Sesame Street. The broad and dense canopy is very symmetrical and neat. The stout trunk and limbs, outfitted with whitish gray bark, are bold and sculptural.
The problem is that the roots are so extremely aggressive. Buttressed roots elevate curbs, sidewalks and anything else that they can get under. Fibrous roots clog drainage, and strangle roots of more complaisant plants. Indian laurel is a tree that really needs room to grow. The canopy can get wider than fifty feet, and roots will spread much farther if they want to. Fortunately, Indian laurel shorn as a hedge has less foliage, so does not need to disperse roots so extensively.
In the first year, Mexican bush sage, Salvia leucantha, does not get very big. Then it gets cut back to the ground at the end of winter. It gets about twice as big in the second year, only to get cut back again as winter ends. By the third or fourth year, healthy maturing plants can grow to five feet tall and seven feet wide each season. While cut back, big clumps can be divided to propagate.
The three most popular specie of Dianthus are sweet William, garden pink and carnation. Sweet William and garden pink are light duty perennial bedding plants that are often grown as annuals. Carnation blooms are more familiar as fragrant cut flowers than as home garden flowers. Then there is dwarf carnation, Dianthus caryophyllus, that combines the best characteristics of all three.
There are those of us who can grow cabbage well, and there are the majority of us who wish we could. Mild winters allow cabbage to be grown in autumn as well as in spring; but warm weather can also compromise flavor and promote premature bolting (blooming), which ruins the heads. Cabbage demands rich soil and regular watering. If the weather is evenly mild, they dig that too.
Since modern cultivars became trendy several years ago, the old fashioned ‘common’ fringe flower, Loropetalum chinense, has become even more uncommon than it already was. It does not grow fast enough to function as large scale shrubbery, but slowly gets too big to work as small shrubbery. Without pruning, old plants take many years to get to fifteen feet tall.
The common name sounds funny, but it is easier to pronounce then than the Latin name. Mulla mulla, Ptilotus exaltus, is an Australian species that has been locally available longer than its limited popularity suggests. It may seem to be more peculiar than it is because it is grown primarily by specialty growers, who happen to grow many cool plants that should be more popular than they are.
If it were not so seriously susceptible to fireblight, the evergreen pear, Pyrus kawakamii, would be a practical evergreen shade tree for small garden spaces. Mature trees do not often get much taller or wider than twenty five feet. Aggressively pruned trees that do not bloom much are less susceptible to fireblight. Regularly groomed trees can live with fireblight for many years or decades.
They 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.
The 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.
Now 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.
Tony Tomeo 