The keys to growing a high-quality crop are proper fertilizer planning that adequately meets the specific nutrient demands of your poinsettia crop and establishing a good nutritional-monitoring program to ensure optimal nutrient conditions are met throughout the crop cycle. She was Features Copy Desk chief before becoming the first full-time garden editor for the paper in 1988. Reply:color is determined by the variety of poinsettia you have if you have a pink one it will always be pink a white one will always be white. […]. Common poinsettia nutritional deficiencies include nitrogen, potassium, calcium, magnesium, molybdenum and general micronutrients. However, simply naming products this way does not necessarily make them the most suitable ones for your operation. There may be a need to supplement your main fertilizer product with components such as STEM, sodium molybdate and magnesium sources and rotating in calcium fertilizers when appropriate. between 1.0 and 2.5.   Higher E.C. In the past few years, growers have reduced their fertilizer concentrations from historical levels, and in some cases, insufficient fertilizer has resulted in N and K deficiencies. Irrigation water quality is the starting point for proper fertilizer selection. Fertilizer programs should abide by some general nutritional guidelines, such as the following:–Fertilizer should provide the correct amount of acidification or buffering to maintain growing medium pH between 5.8 and 6.2; increase root zone pH to 6.5 if irrigation water has a high boron level.–Fertilizer should have a high (50 to 85 percent) nitrate-N fertilizer formulation. If the area you are keeping your poinsettia in tends to be dry, you may find yourself watering it daily. values will allow salts to accumulate, which will inhibit nutrient uptake.  High E.C. The type and amount of fertilizer needed depends the shrub variety, age of the hedge, the spacing of the shrubs and the growing conditions. It is from him that the plant gets its common name. If your irrigation water does not supply enough Ca, supplement it by using fertilizer containing calcium in rotation, such as calcium nitrate or Peters Professional 15-0-15. can also cause young roots to burn – which provides an entry point for root rot problems.  An optimal pH is in the range of 5.8-6.2.  A pH greater than 6.5 will stunt growth, and iron deficiencies will eventually occur.  Bi-weekly testing of these indicators and keeping good fertility and spray records can help you to understand what type of corrective action to take if a problem arises. If you live in the Coastal and Tropical South (USDA Zones 9-11), you can plant it outside and it will grow into a large shrub or small tree covered with blooms each winter. Fertilize: It is not necessary to fertilize your poinsettia but there is no harm in it either. For lighter, green-leafed varieties, Scotts recommends starting off the first two weeks of production at 300 to 350 ppm N on a continuous feed basis (to charge the growing media with nutrients). 4 pounds of Osmocote Plus 15-9-12, eight to nine month product longevity per yard) as a base feed, then use water-soluble fertilizers at half the above recommended concentrations (100 to 125 ppm N). Keep your poinsettia in a bright, sunny spot where the room temperature is 65-70 degrees. hope that helps a little. Micronutrients can be limiting, especially if you’re feeding dark-leafed varieties at low fertilizer concentrations. Be sure to water the plant thoroughly after fertilizing poinsettias, especially if you use a dry fertilizer. Fertilizing hedges is more of an art than a science. While the poinsettia is blooming – when the bracts are showing their color like red, pink, or white – do not give it fertilizer. Poinsettias can also suffer from excess levels of ammonium or boron. 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Maintain at least a continuous feed of 30 to 50 ppm Mg in your feed program. Low Ca can lead to weak stems and leaves, bract edge-burn and depressed growing media pH. Plants are nearly 90 percent water by content, and nutrients are taken into the plant with the irrigation water. See all author stories here. Kathy Huber has worked for the Houston Chronicle since May 1981. Though people normally think of the poinsettia as a Christmas flower, cuttings generally have to be purchased in late May to June to have a beautiful plant to offer during the Christmas Season. I have a mature poinsettia about 7 feet tall which produced beautiful red leaves up through May of this year. If you can’t even read a fertilizer bag, then you have no business even being in the industry. It hasn't done this in years past. If your irrigation water does not supply enough Mg, use a magnesium containing fertilizer or supplement with magnesium nitrate or Epsom salts (applied 4 to 6 ounces/100 gallons). You should water your poinsettia whenever you feel the soil is dry or you see that some of the leaves are wilting. This will stop the poinsettia from turning into the beautiful colors you enjoy. The color transformation of the plant’s lovely bracts occurs when the plants are given precise periods of complete darkness. During crop production, growers should conduct frequent on-site testing of injectors and root zone pH and EC to catch problems before they result in damaging deficiency or toxicity symptoms. The key is to let the water drain out the bottom, and make sure that your poinsettia is not sitting in water. Fred Hulme, Ph.D. is Director of Technical Services at Everris. The length of time your poinsettia will give you pleasure in your home is dependent on (1) the maturity of the plant, (2) when you buy it, and (3) how you treat the plant. When should I prune my poinsettia? With proper care, poinsettias can retain their beauty for two to three months, and if you’re dedicated, you can even get poinsettias to rebloom the following year. We planted the cuttings 2 weeks ago. Throughout the daytime, your poinsettias should be … Poinsett introduced the poinsettia to America in 1828. To up your chances of having your Poinsettia bloom again during the holiday season, you can give it a dark treatment at this time, as you would do with a Christmas Cactus to make it flower.. Just read on, how to do such a dark treatment for your Poinsettia is described right below. Atlantic County residents can contact 609-625-0056. Provided the poinsettia plant is given the proper environmental conditions, it should begin to regrow within weeks. It's one of the most festive holiday florals! Maintain a continuous feed of at least 60 to 100 ppm Ca in your feed program. However, since production timing for this crop is fixed, fertilizer programs must be compatible with typical environmental conditions observed during this period. Get 1 Free Product Today All India Delivery Lowest prices. In fact, this is one of the main means by which the plant is propagated, and people can purchase cuttings in many large gardening stores. There are a number of fertilizers labeled as “poinsettia fertilizers” to make the selection process appear easy from a marketing perspective. If you live in a mild climate and you’re able to take your poinsettia outdoors during the summer months, be sure to keep the plant well watered and fertilized. 6. Reblooming your Poinsettia. Sign up for our newsletter. Be sure to keep the soil moist but not soaking wet, and punch holes in the decorative pot cover so water can drain away from the container - do not let your poinsettia … you can't change the color with fertilizer. A water-soluble fertilizer is easiest to apply, but a dry fertilizer will also satisfy poinsettia fertilizer requirements. The soil in which poinsettias grow should be kept moist at all times, but not excessively wet. Prune off the old stems in late winter or early spring by cutting them back to 4 to 6 inches in height and leaving one to three leaves on each stem. Poinsettias can be sensitive to B toxicity that results in leaf edge burn. Test your irrigation water even before you pot up cuttings to help you select the correct fertilizer program. Thus, they need to be applied in rotation. Apply fertilizer every two weeks or once monthly using a complete houseplant fertilizer. A well-cared for and well-fed poinsettia will produce those abundant colorful flower bracts again and again, or at least as long as you intend on keeping the plant. Let’s learn about a very important aspect of that care: fertilizing poinsettias. Keep it in a partially shaded location and maintain your watering and fertilizing schedule. Thin, rocky or sandy soils are often low in nutrients and hedges fail to thrive. They are often disposed of once they start to fade, but with a little care, you can keep them all year and the bracts will colour up again the following year. To avoid micronutrient deficiency symptoms, supplement with a remedial drench of STEM at 1 to 2 ounces/100 gallons on October 1 and November 1. Sign up to get all the latest gardening tips! The key to getting your poinsettia to turn red (or to re-shade), is the elimination of light. Some of these nutritional problems may be linked to the time of year when poinsettias are grown (when day length and light intensity are decreasing). 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