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

  • 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 […]
  • ILS lilac convention
    Save the Date!
    June 4-7, 2020 Hosted by Le Musee des Lilas in Saint-Georges, Quebec Canada Additional information is posted here and in the Fall Journal Registration 2020 2020 […]
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Announcing the 2019 ILS Lilac Photo & Color Database!

The ILS Board has approved the sale of the first-ever 2019 ILS Lilac Photo and Color Database. It is available immediately for order in DVD format only.
(Left: Lilac DVD cover)

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