The poinsettia (Euphorbia pulcherrima) is a much-maligned plant which is thought by the public and some health professionals to be extremely toxic. Despite pronouncements by public health officials to the contrary, the poinsettia continues to be recognized as a poisonous plant. To determine if there was any validity to the toxicity claims, 849,575 plant exposures reported to the American Associ...

Abscission is a highly regulated and coordinated developmental process in plants. It is important to understand the processes leading up to the event, in order to better control abscission in crop plants. This has the potential to reduce yield losses in the field and increase the ornamental value of flowers and potted plants. A reliable method of abscission induction in poinsettia (Euphorbia pu...

The short-day plants Begonia cheimantha, Chrysanthemum morifolium (one pot and one cut cultivar), Euphorbia pulcherrima (poinsettia) and Kalanchoe blossfeldiana were grown at vapour pressure de®cits (VPDs) of 155, 420 and 660 Pa (corresponding to 93, 81 and 70% relative air humidity, respectively). The lowest VPD delayed time to ̄owering by three to four days in pot and cut chrysanthemum but di...

PREMISE OF THE STUDY The poinsettia (Euphorbia pulcherrima) is the world's most economically important potted plant, but despite its preeminence it is not clear which wild populations are ancestral to the varieties cultivated around the world. Tradition holds that the U.S. envoy to Mexico J. R. Poinsett collected the progenitors of the over 300 varieties in global cultivation on an 1828 excursi...

Several plants are used for their decorative effect during winter holidays. This review explores the toxic reputation and proposed management for exposures to several of those, namely poinsettia (Euphorbia pulcherrima), English holly (Ilex aquifolium), American holly (Ilex opaca), bittersweet (Solanum dulcamara), Jerusalem cherry (Solanum pseudocapsicum), American mistletoe (Phoradendron seroti...

poinsettia (euphorbia pulcherrima) is a potted plant, which its colorful bracts appear in short days. in thisexperiment, effect of different ammonium to total nitrogen ratios on quantitative and qualitative traits ofpoinsettia was studied. the experiment was conducted as a complete randomized design with threereplicates. the plants were irrigated with water containing of different ammonium to t...

Euphorbia pulcherrima, poinsettia, is a non-food and non-feed vegetatively propagated ornamental plant. Appropriate plant height is one of the most important traits in poinsettia production and is commonly achieved by application of chemical growth retardants. To produce compact poinsettia plants with desirable height and reduce the utilization of growth retardants, the Arabidopsis SHORT INTERN...

Late-season height control of poinsettia (Euphorbia pulcherrima) is difficult since most chemical growth retardants adversely reduce bract size when applied after first bract color. Paclobutrazol (Bonzi) controls stem elongation late in poinsettia crop development but can excessively reduce bract size if improperly applied. Two experiments were conducted to quantify how paclobutrazol applicatio...

background: poinsettia (euphorbia pulcherrima), holly (ilex opaca) and mistletoe (phoradendron flavescens) adorn homes during the christmas and new year holiday season and create the potential for curious children to sample their colorful leaves and enticing berries. this study was aimed to review the american association of poison control centers national poison data system (aapcc npds) to des...