The International Lilac Society (ILS) is a group of people who have a common interest in lilacs.

lilac bullet Do you grow lilacs?

lilac bullet Sell lilacs?

lilac bullet Know the DNA sequence of some lilacs?

lilac bullet Display lilacs for the public?

lilac bullet Or just like the way they look or smell?

If any of this applies to you, you are welcome at ILS!

A lilac in every garden. . . the world over!



Bringing lilac enthusiasts together since 1971!


Members from all over the world.


2600 lilac cultivars (varieties).

of Publications

Newsletters and Journals available.

Current News

  • 2020 Convention Cancelled
    It is with great sadness to announce that the 2020 Convention in Quebec City has been cancelled due to COVID-19. We are looking forward to a […]
  • Support scientific research while enjoying lilacs in your yard!
    You are invited to join forces with the USA National Phenology Network and track the timing of flower and leaf events in a cloned lilac, thereby […]
  • Lilac Booklets for Sale!
    The revised lilac booklet Lilacs; Plants of History-Plants for Tomorrow, 2nd edition is available. This is a great “how to” 24 page guide covering everything from […]
  • ILS Coloring Books
    Kudos to the ILS Youth Committee which has developed a lilac inspired coloring book. The idea behind the book is to use it as an educational […]
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Announcing the 2020 ILS Lilac Photo & Color Database!

The ILS Board has approved the sale of the second, revised, massively updated 2020 ILS Lilac Photo and Color Database. It is available immediately for order in DVD or USB-A flash drive formats only.
(Left: Lilac DVD cover)

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