Our focus and expertise at the Lady Bird Johnson Wildflower Center are in plants native to North America. Common lilac or lilac bush (Syringa vulgaris) is a European native that has been naturalized in North America. We can, however, guide you to sources that will have the answers to your lilac bush care problems. According to The Gardener's Network, the most important thing about pruning your lilac is to do so as soon as it has finished blooming. and before its seeds have completely formed and set. This will encourage the plant to bloom heartily next year. Another reason to prune immediately after the trees has bloomed is that the flower buds for next year's flowers form early. If you wait too long after this year's blooming has finished, you risk the possibility of trimming off next year's buds. Your can read more about care of your lilac on the International Lilac Society webpage and on the Syringa Plus webpage.
Removing non-native juniperus x pfitzeriana in Arvada CO June 25, 2009 - We have 200' of large juniper pfitzers (3' tall - 4' wide) that completely enclose our front yard. We want to remove all of them but the estimates to dispose of them have been extremely high. One... view the full question and answer
Problem with non-native sweet vernal grass, Anthoxanthum odoratum June 24, 2010 - Hello there Mr. Smarty Plants, I have a question about growing Anthoxanthum odoratum known as sweet vernal grass. I'm trying to get Anthoxanthum odoratum, sweet vernal grass, to grow in my yard becau... view the full question and answer
Freeze problems with non-native weeping willow in Joplin, MO May 13, 2010 - My weeping willow had leaves forming and a frost hit and now the tree looks like it is dead. Everything else is in bloom and I don't know if the frost killed my tree or if I need to wait to see if it... view the full question and answer
Mowing wildflower concerns from Lockhart TX March 30, 2012 - I went to the Texas Highway Department (Texas Department of Transportation) web site and sent them a concern or complaint about them or independent contractors shredding the roadsides before the blueb... view the full question and answer