Planting can continue up to September 1st for late crops, however the early market is where most sales occur and the late market can be much chancier for growers. Rooted cuttings should be planted beginning in mid August. There are currently over 100 Poinsettia hybrids on the market, and selecting the correct hybrid for your production needs is one of the biggest decisions in this crop. However, recent advances in breeding have led to crops which flower naturally early enough in the season to meet early sales requirements. In commercial production many growers use black cloth to either produce earlier crops or make the entire crop more uniform. Poinsettia is what is a called a short day photoperiod crop, which means that it naturally flowers when the nights become longer than the days.
There are many successful ways to control poinsettia height under warm climate production. Plant Growth Regulator (PGR) recommendations If a grower is harvesting cuttings from plants while pinching, the pinch should be delayed until 3-4 weeks after planting. 5 to 1" of the top growth, if plants are allowed to grow larger before pinching crop delays can result. Pinch to seven nodes at approximately 2-3 weeks after planting the first pinch should be removal of. For direct stick, overwatering should be avoided to prevent rotting. Maintain temperatures between 70-75☏ with100% humidity as cuttings begin rooting, and then lower humidity as roots develop. Many growers opt for purchasing rooted cuttings of this crop rather than propagating their own plants, as sanitation when cuttings are taken is critical to producing good finished plants.įor growers producing their own cuttings: Root cuttings in a sterile, porous medium and keep cutting equipment and cutting area clean and sterile to prevent disease. Fertilizer needs also differ from variety to variety.Ī complete micronutrient application is recommended at 1-2 weeks after planting rooted cuttings. In all cases the fertilizer should have high calcium and magnesium levels to avoid problems with bract edge burn at finish. Fertilizationįertilizer concentration should be maintained at 200- 300 ppm N for constant fertilization, and 400-500 ppm when fertilizing intermittently every 7-10 days.įertilizer formulation is somewhat flexible but most Florida growers use either a 20-10-20 formulation or 15-5-15 formulation. Once bracts are fully formed, many growers drop temperatures to 50F at night to intensify bract coloration. Poinsettia crops are delayed when night temperatures drop below 50F. Night temperatures should remain above 60F throughout production. Production temperaturesĭay temperatures can vary between 75-80☏. Higher light decreases plant height and increases bract color, and light less than 5000 fc is detrimental to growth.
#Night productoin pref setter full#
Under most Florida conditions a 30% level (compared to full sun production) is recommended, but this varies depending on the greenhouse used for production and the amount of light that passes through the covering. Note: poinsettias prefer a more acidic media than many other flowering potted crops, care should be taken to keep pH within the preferred range. Media pH preferenceĥ.5-6.5, Dolomite lime preferred for media pH control. A broad spectrum fungicide is recommended at 1 week after planting to reduce chances of disease problems during the early phases of production. Specialty crops in larger pots may require 3-5 cuttings per pot. 1-3 cuttings in 8"-10" containers, or hanging baskets.
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