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Japanese Tree lilac is an exception since it is often trained to grow as a small tree, so it should not be given renewal or rejuvenation pruning.
• Best varieties to plant in South Dakota
Lilac flowers range in color from pure white to pink, blue, violet, magenta, purple and even yellow. They may have single or double flowers and range in fragrance from almost none to quite strong. Most are considered to have a pleasing fragrance except perhaps the tree lilacs which some may find mildly objectionable. Most species and cultivars of modern lilacs have plain green leaves with little fall color but some have variegated foliage and display interesting fall color, especially the Manchurian and Hyacinth Lilacs.
• The best adapted and most commonly available lilacs for the Northern Great Plains include the following, listed with typical height:
Chinese lilac                            Syringa x chinensis                 10 feet
Hyacinth lilac                          Syringa x hyacinthiflora          8 to 10 feet
Meyer lilac                              Syringa myeri                          5 feet
Littleleaf lilac                          Syringa microphylla                6 feet
Manchurian lilac                      Syringa patula                         6 feet
Preston lilac                             Syringa x prestoniae                8 to 10 feet
Japanese Tree Lilac                 Syringa reticulata                    8 to 15 feet
Late lilac                                 Syringa villosa                         10 feet
Common lilac                          Syringa vulgaris                      10 to 12 feet
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