Category: H
-
House plant
Any kind of plant that can be grown for ornamental purposes inside a house. The house plants of temperate regions mostly originate from warmer parts of the world, many being known as outdoor garden plants in subtropical climates (for example, abutilons, poinsettias). The most widely grown house plants are those that will tolerate the most…
-
Horticulture
The art and science of gardening. Commercial horticulture is traditionally distinguished from agriculture in covering fruit, flower and small-scale vegetable growing, as well as the nursery industry, whereas agriculture covers broad- acre farming activities.
-
Hemisphere
Any half of the earth’s surface, but most commonly taken to mean the northern or southern hemisphere, divided by the equator—though in earlier times an equally significant distinction was seen to be that between the eastern (Europe, Asia, Africa) and western (Americas) hemispheres. Climatically, there is a considerable difference between the northern and southern temperate…
-
Hedge
A close planting of trees or shrubs, their branches intertwining and acting as a barrier or fence. Hedges can be almost any height or width, depending on the species used, but the typical garden hedge is 5-10 ft (1.5-3 m) high and composed of a single species of shrub or small tree such as box,…
-
Haws
Small pome fruits, especially those of Crataegus, the hawthorn genus.
-
Harden off
To gradually acclimatize plants that have been growing in a protective environment to a more harsh environment, e.g., plants started indoors being moved outdoors.
-
Half-hardy
A plant capable of surviving the climatic conditions of a given region if protected.
-
Numbness
A loss of feeling. Partial or total lack of sensation in a part of the body, often accompanied by tingling. Minor nerve damage or more serious nerve injury or dysfunction may cause it. Partial or total loss of sensation in part of the body that is caused by interference with the passage of impulses along…
-
Hysterotrachelorrhaphy
An operation to repair a tear in the cervix. Plastic surgery of a lacerated cervix by paring the edges and suturing them together.
-
Hysteroscopy
An examination of the uterine cavity using a hysteroscope or fibrescope. A medical procedure in which an endoscope, a flexible tube containing a periscope-like viewing device, is introduced into the uterus through the vagina and cervix; often performed during a search for causes of infertility. Most reliably performed at the early part of a woman’s…