10 Seeds Senna multiglandulosa Buttercup Bush Ornamental Tree Go to amazon.com Related posts Top senna seeds for 2022 FeatureA large shrub or small tree, widely distributed from Mexico to western South America.It has pinnate leaves and golden yellow flowers. DescriptionGermination: Sow 1cm in coir or sowing mix + sand or perlite. Keep bright and constantly moist but not wet. Germination takes 2-4 weeks.