Happy Halloween! Here is an absolutely terrifying tree you've probably passed this week in LA! Angel's Trumpet (Brugmansia spp.) This tropical Andes, South American native and common garden tree is extremely poisonous, Saraca asoca, Asokam, Ashoka tree, SMPB Kerala Think twice before planting the empress tree! Its stunning purple blooms and rapid growth might catch your eye, but this beauty comes with a dark side invasive roots, relentless sprouts, and NASA studied about a dozen popular varieties of ornamental plants to determine their effectiveness in removing several key pollutants associated with indoor air pollution. NASA research found that living plants are so 20 High Impact Factor Journals in Cell Biology 2026