the crown flower or giant milkweed, this large shrub or small tree

agriculture tree medicine bloom flora closeup beauty purple beautiful green colourful summer blooming natural leaf blossom colours flower milkweed violet swallow garden white season blue growth background spring fresh botany nature crown plant floral environment pollen botanical tropical ayurveda herbal asia herb tropics oceania bud giant lactic bush large shrub small native asia fast growing soft wooded evergreen oval shaped gray leaves odd heart