Soil Salinity is the measure of the total soluble salts in a soil.

Winter or summer injury to the trunk of a woody plant caused by hot sun and fluctuating temperatures. Typically, sunscalded bark splits and separates from the trunk.

After wounding, callus forms, woundwood is a tough, woody tissue full of lignin that grows behind callus When woundwood closes wounds, then normal wood continues to form.

Plants take in – or ‘fix’ – carbon dioxide from the atmosphere during photosynthesis. Some of the carbon is used for plant growth, and some of it is used in respiration, where the plant breaks down sugars to get energy.

When they photosynthesise, plants use sunlight to break apart water into hydrogen and oxygen, and then combine the resulting hydrogen with carbon dioxide from the air to create carbohydrates.

Calcium carbonate is used to help prevent the spread of various diseases, such as powdery mildew, black spot, and blossom end rot. Calcium carbonate (as you may have guessed) bestows plants with a (1) healthy source of calcium, (2) pH balancing properties, (3) increases water retention ability within acidic soils, and

Areas derived by the USDA that indicate average-low winter temperatures. Used as a plant hardiness indicator. Other plant hardiness zones developed by other entities use different numbering systems.

Cellular water pressure; responsible for keeping cells firm.

Plumeria dormancy is a period of arrested growth. It is a survival strategy exhibited by many plant species, which enables them to survive in climates where part of the year is unsuitable for growth. Plumerias are tropical and a phase of innate dormancy coinciding with an unfavorable season, such as winter

An infectious agent composed of DNA or RNA, too small to see with a compound micro-scope; multiplies only in living cells.