Occasionally, at the time of pinching, some of the buds may have broken and started growing. These shoots should be removed. We could devote the whole newsletter to poinsettia fertilization. The following is just a reminder of some of the common problems growers encounter. Important for plant health and strength.
Some growers think about calcium only to avoid the latter problem ignoring the former.
This element moves into the plant with the water used for transpiration. Adequate levels of calcium early in the season, when temperatures and transpiration are high, will contribute in having adequate calcium levels in the plant tissues. Sometimes, calcium may be deficient despite the fact that it is present at levels considered to be acceptable in both soil and plant tissue. The deficiency may be caused by an excess of magnesium. Poinsettias have higher molybdenum requirements than other crops.