Ask Mr. Smarty Plants is a free service provided by the staff and volunteers at the Lady Bird Johnson Wildflower Center.
Can't find the answer in our existing FAQs, submit a question to Mr. Smarty Plants.
Need help with plant identification, visit the plant identification page.
From: Portsmouth, NH
Region: Northeast
Topic: Non-Natives
Title: Non-native lilac in a pot in New Hampshire
Answered by: Barbara Medford
The Lady Bird Johnson Wildflower Center is dedicated to the care and propagation of plants native not only to North America but to the area in which the plant is being grown. Plants accustomed to the climate, rainfall and soil of an area will need less water, fertilizer and maintenance. Syringa vulgaris, common lilac, is native to southeastern Europe and therefore out of our range of expertise.However, a probably more compelling reason for you not to plant a lilac in a pot on your balcony is that a lilac bush is just way too big. They can grow to 8 to 15 feet tall and 6 to 12 feet wide. Worse, they only bloom about 2 weeks in the Spring.
Without the protection of being in the ground, the roots of a potted plant are very susceptible to freezing and you likely don't have room to bring your pots in during the winter to keep them in dormancy. We would recommend that you go to a nursery and ask for advice on what they have that will accept your planting conditions. They probably won't be native plants but since it's unlikely that potted plants on a deck will escape cultivation and invade native habitats, we doubt that is a problem.
Controlling seeding of non- native, invasive Paulownia from Fayetteville TN
August 17, 2012 - My husband planted a Paulownia tree against my advice about eight years ago. This summer it has huge seed pods. How do I keep the seeds from invading the wooded area of our property?
view the full question and answer
Replacement for non-native Sago palms in Austin
November 28, 2010 - We have two pillars, one on each side of our front door. There is a sago palm in front of each pillar. It is a dramatic and beautiful look, but the palms, facing north and in shade, are growing so tha...
view the full question and answer
How Can I Tell an Invasive Thistle from a Native
May 01, 2012 - Mr Smarty Plants,
I have some thistles coming up in my yard. I'd like to keep them if they are native, but not if they are invasive or non-native. How can I tell? My yard is a wild area in West Lak...
view the full question and answer
Late blooming Esperanza in St. Augustine FL
April 21, 2011 - I bought an Esperanza at a plant expo- I was told it was a Florida native Allamanda. It took me two years to figure out what I had. Mine grows 8 ft. tall and is huge! But it doesn't bloom until alm...
view the full question and answer
Problems with non-native Chinese pistache tree in San Jose CA
May 30, 2009 - We have a Chinese Pistache tree that is between 25 and 30 years-old. Over the past couple years, we have observed more and more branches dying. They turn black, and remain leafless in the spring, when...
view the full question and answer
![]() |
Support the Wildflower Center by Donating Online or Becoming a Member today. Mr. Smarty Plants wants you to be his Facebook friend. Click the Facebook icon to add yourself to Mr. Smarty Plants list of friends. |