Zygopetalum Arthur Elle 'Tombstone'. 4" Pots blooming size. a very fragrant type of zygopetalum, spicy fragrance with beautiful and unusual blooms. This orchid has blooms about 2.5" across and about 4-8 on a stem. These plants like moderate filtered light, watered regularly but dry between. Blooms typically last about 1 month. Once in full bloom, reduce water to extend blooming.