English Gardening Word Glossary
Acid soil refers to soil that's below 7 on the PH scale
Alkaline soil refers to soil that's above 7 on the PH scale
Why does PH matter? Certain plants (such as pines and ferns) will do better in acid soil and others (such as lilacs and lavender) will do better in alkaline soil. Knowing the PH of the soil will help you avoid the mistake of placing a plant in the wrong place.
Horticultural zone refers to a designated area of your country which is defined by the coldest winter temperature.
Hardy plants will survive the winter in your horticultural zone.
Semi-hardy plants will survive a mild winter, but not a harsh one. Increase your chances of success by planting them in a protected spot, near a brick or rock wall, sheltered from strong winds.
Annual plants germinate from seed, grow stems and leaves, flower, go to seed, and die all within one growing season. Examples include tomatoes and marigolds.
Perennial plants last more than one year (usually many years), flower yearly, and usually die down to the ground during the winter and start growing again in the spring. They are usually called herbaceous which means they do not have any woody parts. Examples include peony or asparagus.
Biennial plants that last only two years, usually germinating and growing stems and leaves one year, flowering and going to seed the second year. Examples: Parsley or Digitalis purpurea aka Foxglove.
Woody plants have woody stems and single or multiple trunks that survive from year to year. They can be evergreen (leaves stay on them year-round such as rhododendrons) or deciduous (their leaves fall off in the autumn and return in spring, such as oak trees.)
Crown refers to the center of the plant where new growth usually emerges from the ground. It's best to avoid putting mulch on top of the crown of a plant as this can rot the crown and kill the plant.
Division: When dividing a plant, usually a perennial, you'll end up with two or more divisions with root systems which can each be re-planted. The divisions will all look like the original plant.
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