Browse "Plants"

Displaying 101-120 of 161 results
Article

Not for Saps: Tree Planting in Alberta

Over a century’s worth of shifting environmental policy means that today, maintaining Canada’s forests is as important as cutting them down. Tree planting is an essential part of this maintenance, and each year thousands of young Canadians trek through rough conditions and remote areas to replant thousands of trees.

Article

Oak

The Oak (Quercus) is a genus of trees and shrubs of the beech family (Fagaceae). Of the estimated 200 species found worldwide, 75-80 occur in North America and 10 in Canada.

Article

Orchid

Calypso bulbosa has similar but smaller, delicate pink flowers. Some Spiranthes and Habenaria species have small, whitish, fragrant flowers in a spike. Two genera, Eburophyton (plant is white) and Corallorhiza (plant is yellow to purple), live on decaying vegetable matter.

Article

Organic Agriculture

Organic agriculture is defined as the sustainable cultivation of land for food production that nourishes soil life, nurtures animals in their natural environment and feeds them according to their physiology.

Article

Paintbrush

The paintbrush is a herbaceous plant of genus Castilleja , figwort family, Scrophulariaceae. Most are perennial. The common name, Indian paintbrush, is applied to several species. About 200 species occur worldwide, mostly in

Article

Pea

Some pea cultivars are grown in gardens for their tender green pods as VEGETABLES, which are harvested at their early stage of development, and eaten raw or cooked. They are known as snowpeas, sugar peas or snap peas. In parts of Asia and Africa, tender pea foliage is harvested as vegetable.

Article

Pepper

Pepper (Capsicum annuum) is a perennial plant, cultivated as an annual and belonging to the nightshade family.

Article

Phlox

Tall, vibrantly coloured summer-flowering phlox, derived from eastern North American P. paniculata, one of the most popular garden perennials in Canada, is often used for island beds or as border plants.

Article

Pine

Most are either "soft" pines with 5 needles per shoot or "hard" pines with 2-3 per shoot. The most familiar soft pines are western white pine (P. monticola) of BC, and eastern white pine (P. strobus), east of Manitoba. Others include limber pine (P. flexilis) and whitebark pine (P.

Article

Pitcher Plant

Tropical Asian and N Australian pitcher plants of the genus Nepenthes belong to the family Nepenthaceae. The Australian flycatcher (Cephalotus follicularis) of SW Australia is the only species of the family Cephalotaceae.

Article

Plankton

Plankton [Gk planktos, "drifting"], plants and animals, phytoplankton and zooplankton, respectively, that float freely or drift with currents in oceans, freshwater ponds and lakes.

Article

Plant

The shoot system (stem and leaves) grows upward into the light and is the site of photosynthesis; the root system penetrates the soil, anchors the plant and absorbs necessary water and minerals.

Article

Plant Breeding

Plant breeding is an applied science, in which knowledge of genetics, pathology, plant physiology, statistics, and molecular biology are used to modify plant species for human needs or preferences.

Article

Plant Classification

Popular classification usually divides living beings into plants and animals and, sometimes, microbes. Scientific classification long followed a similar system, with 2 principal kingdoms: the animal order and the vegetable order.

Article

Plant Disease

Plant disease can decrease the economic, aesthetic and biological value of all kinds of plants. Plant pathology (phytopathology) is the study of the nature, causes, prevention and socioeconomic aspects of plant diseases.

Article

Poison Ivy

Poison ivy plants can spread by underground stems or seeds. Most are small shrubs (0.5-1 m tall); others are vinelike plants, 15 m or longer, supported by aerial roots. Shrubby forms are sometimes called poison oak.

Article

Poisonous Plants

Toxic PropertiesToxic reactions generally are caused by chemical compounds that are produced by plants or absorbed from soil. These compounds produce undesirable physiological responses in individuals or animals.

Article

Poplar

The poplar is a short-lived, deciduous, hardwood tree of genus Populus of the willow family, widely distributed in the northern temperate zone.