Plant your poinsettia in an area that receives full sun most of the day. However, keep in mind that to put out flower buds, poinsettias require 14 hours of complete darkness each day for 6 to 8 weeks before flowering. Any interruption to this dark period can delay or prevent the plant from flowering. Watering & Soil. Keep the soil moderately moist at all times. Poinsettias grow best in moist, well drained, fertile soils. As long as the soil is well drained, they will grow satisfactorily in a wide range of soils, including sand, muck, marl and clay.
Conical taper is the change in the diameter of a circular solid along its length. It can be expressed in linear units such as inches per foot or as an angle. When the decrease in diameter and the length are viewed as two sides of a right triangle, trigonometry can be used to convert the linear unit expression to an angle.
To taper is to gradually grow smaller or more narrow or less intense. Taper is often used with the word off. Part of the power of the Vietnam Veterans Memorial is how the two walls appear to taper off into infinity. As a verb, taper can refer not just to physical objects that narrow: the weather forecast might call for heavy snow that will taper off at the end of the day, and public interest in a political scandal might taper off over time. As a noun, taper refers to a shape that narrows at one end, and it's also another word for a candle that is smaller at one end than the other.