Bing found the following results
How to Grow and Care for Ivory Silk Lilac Tree - The Spruce
Syringa reticulata ‘Ivory Silk’ (Japanese Tree Lilac) - Gardenia
Ivory Silk Japanese Tree Lilac - Plant Guide - Arbor Valley Nursery
Ivory Silk Japanese Tree Lilac | Bower & Branch
Ivory Silk Japanese Lilac Trees for Sale – BrighterBlooms.com
Ivory Silk® Japanese Tree Lilac - TheTreeFarm.com
Japanese Tree Lilac ‘Ivory Silk’ (Syringa reticulata)
Syringa reticulata 'Ivory Silk' - Plant Finder - Missouri Botanical Garden
Syringa reticulata subsp. reticulata 'Ivory Silk' (Japanese Tree Lilac ...
Syringa, Japanese Lilac Tree 'Ivory Silk®' - Gertens