Lilac 'Ivory Silk' Sale! from $ 0.20 USD /per Size Options 1 gallon - bare root (no pot) - Sold Out Quantity Sold Out Couldn't load pickup availability Refresh Japanese tree lilac. Very fine upright form, more tree-like than shrubby. These line the street in town on the way to my train station, I love seeing them in spring. Late. Pokluda 1973. Syringa reticulata subsp. reticulata 'Ivory Silk'