The present invention relates to Euphorbia interspecific hybrid plants and methods for making the same. In particular, the invention relates to developing diploid, triploid and tetraploid interspecific hybrid plants derived from crosses between Euphorbia pulcherrima and F.sub.1 hybrids of Euphorbia pulcherrimaEuphorbia cornastra. In addition to providing the diploid, triploid and tetraploid interspecific hybrid plants and plant parts, the invention provides methods for making triploid interspecific hybrid plants with non-functional small cyathia and methods for making tetraploid interspecific hybrid plants with non-functional small cyathia and red bracts.

A determinate castor is provided. Also provided are methods of generating and using same as well as products thereof.

A new Poinsettia plant named EURZ0002 particularly distinguished by cream-white flower color, relatively large inflorescences with the bracts a little upright directed, early flowering response, dark green foliage, ovate leaves, and medium to strong vigour with good branching.

A new Poinsettia plant named EURZ0001 particularly distinguished by its pink flower color, relatively large inflorescences with the bracts a little upright directed, early flowering response, dark green foliage, ovate leaves with only weak lobes, and medium to strong growth habit with good branching.

A new poinsettia plant particularly distinguished by having pink bicolored bracts, is disclosed.

A new and distinct cultivar of Poinsettia plant named Qismas Crunch, characterized by its compact, upright and uniformly mounding plant habit; moderately vigorous growth habit; freely branching habit; dark green-colored leaves that are twisting and curly in appearance; large and full inflorescences with numerous dark red-colored flower bracts; and excellent post-production longevity.

A new and distinct cultivar of Euphorbia plant named Bonpri 585, characterized by its compact, upright and uniformly mounded plant habit; vigorous growth habit; freely branching habit; dark green-colored leaves; freely flowering habit; inflorescences with light pink-colored flower bracts; and good post-production longevity.

A new and distinct cultivar of Euphorbia plant named Bonpri 1049, characterized by its compact, upright and mounded plant habit; vigorous growth habit; freely branching habit; dark green-colored leaves; freely flowering habit; inflorescences with bright red purple-colored flower bracts; and good post-production longevity.

A new and distinct cultivar of Euphorbia plant named Bonpri 1095, characterized by its upright and mounded plant habit; vigorous growth habit; freely branching habit; dark green-colored leaves; inflorescences with large intense red purple-colored flower bracts with lighter red purple-colored margins; inflorescences with small and sterile cyathia; and good post-production longevity.

A new poinsettia plant particularly distinguished by having lime to yellowish bracts with a low vigor, is disclosed.