Growth
In warmer and more favorable climates, perennials grow continuously. In seasonal climates, their growth is limited to the growing season. For example, in temperate regions a perennial plant may grow and bloom during the warm part of the year, with the foliage dying back in the winter. These plants are deciduous perennials. Regrowth is from existing stem tissue. In many parts of the world, seasonality is expressed as wet and dry periods rather than warm and cold periods. In some species, perennials retain their foliage all year round; these are evergreen perennials.
With their roots protected below ground in the soil layer, perennial plants are notably tolerant of wildfire. Herbaceous perennials are also able to tolerate the extremes of cold in temperate and Arctic winters, with less sensitivity than trees or shrubs.
Knowing the planting zone can be very useful planning a garden and flower bed areas. Gardeners should compare their garden climates with the climate where a plant is known to grow well. Most plants are marked with a zone number which corresponds with a region on a map where that plant will survive. While a range of zones might be listed, the lower of the zone numbers indicates the lowest recommended zone in which that plant can survive. It is possible that a plant might thrive outside a labeled zone area.
Read more about this topic: Perennial Plant
Famous quotes containing the word growth:
“The Past—the dark unfathom’d retrospect!
The teeming gulf—the sleepers and the shadows!
The past! the infinite greatness of the past!
For what is the present after all but a growth out of the past?”
—Walt Whitman (1819–1892)
“Next to the right of liberty, the right of property is the most important individual right guaranteed by the Constitution and the one which, united with that of personal liberty, has contributed more to the growth of civilization than any other institution established by the human race.”
—William Howard Taft (1857–1930)
“The risk for a woman who considers her helpless children her “job” is that the children’s growth toward self-sufficiency may be experienced as a refutation of the mother’s indispensability, and she may unconsciously sabotage their growth as a result.”
—Letty Cottin Pogrebin (20th century)