A new cultivar of Euphorbia plant named ‘16EUPD1’ that is characterized by its compact, upright, slightly outwardly spreading plant habit, its freely branched growth habit, its free flowering habit, its small dark green leaves, its inflorescenses with a double small flower bracts that are pure white in color, and its high heat tolerance.

The disclosure relates to a method for the generation of plants, such as Euphorbia pulcherrima, having a dysfunctional glutathione S-transferase (GST), and the seeds, plant parts or plant cells derived therefrom. The disclosure further relates to a molecular marker capable of identifying a dysfunctional GST gene, to isolated DNA encoding such a dysfunctional GST gene and to the use of such DNA for the preparation of a molecular marker and for use in methods of targeted mutagenesis to inactivate the GST gene to generate plants with a white foliage phenotype.

Methods of propagating and growing poinsettias in pots have allowed poinsettias to become the highest selling potted flowering plant. The present application relates generally to the field of plant propagation. In particular, a method of producing a pre-pinched, callused poinsettia cutting is provided. Also provided is a method to produce a poinsettia with improved growth habit. The invention also provides a pre-pinched, callused poinsettia cutting.

A new and distinct cultivar of Poinsettia plant named ‘LAZZPO1615’, characterized by its compact, upright “V”-shaped and uniformly mounding plant habit; moderately vigorous growth habit; freely branching habit and strong stems; dark green-colored leaves; full inflorescences with medium to large bright red-colored flower bracts; and excellent post-production longevity.

A new and distinct cultivar of Poinsettia plant named ‘QS47’, characterized by its compact, upright and uniformly mounding plant habit; moderately vigorous growth habit; freely branching habit; dark green-colored leaves; dense inflorescences with numerous curly and yellow-colored flower bracts; and excellent post-production longevity.

A new and distinct cultivar of Poinsettia plant named ‘QS44’, characterized by its compact, upright and uniformly mounding plant habit; moderately vigorous to vigorous growth habit; freely branching habit; dark green-colored leaves; large and full inflorescences with numerous vivid red-colored flower bracts; and excellent post-production longevity.

A new and distinct cultivar of Euphorbia plant named ‘Bonpr 611’, characterized by its relatively compact, upright and mounded plant habit; vigorous growth habit; freely branching habit; inflorescences with purplish pink-colored flower bracts with random very pale purple-colored spots, flecks and sectors; relatively small cyathia; and good post-production longevity.

A new and distinct cultivar of Euphorbia plant named ‘Bonpr 1639’, characterized by its relatively compact, upright and mounded plant habit; vigorous growth habit; freely branching habit; inflorescences with purplish red-colored flower bracts with random light purplish pink-colored spots, flecks and sectors; relatively small cyathia; and good post-production longevity.

A new Poinsettia plant named ‘EURZ0027’ particularly distinguished by the distinct dark red bract color, dark green foliage, and strong vigor with very good branching and strong stems.

A new Poinsettia plant particularly distinguished by having red bracts, an upright habit, and having a triangular plant form, is disclosed.