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.
Other Bowl Dimensions. There are two additional dimensions sometimes discussed in reference to the bowls of sinks. The taper of the bowl is the name given to the slope or how much the sides of the sink slant as they run from the top to the bottom. The bigger the size of the taper, the more water a sink can hold. The radius of the bowl tells you how much space is lost where the straight or sloped sides of the bowl intersect with the bottom of the bowl. The bigger the size of the radius measurement, the less water a sink can hold.