Lilac 'Ivory Silk' Sale! from $ 0.17 USD /per Size 1 gallon - bare root (no pot) 3 gallon. PICK UP ONLY. NO SHIPPING. Produc variants 1 gallon - bare root (no pot) 3 gallon. PICK UP ONLY. NO SHIPPING. Quantity Add to Cart 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'