Tulip Tree (Liriodendron tulipifera): A Speedy Giant
Jim Lakin MD, Master Gardener
You may not be familiar with the Tulip tree, June’s native tree of the month, because until now our climate was not suitable. Although climate change is an existential threat to our planet, or at least to our species, it has made growing tulip trees a possibility in southern Minnesota and the Twin Cities. Aside from its intriguing name, the Tulip tree has lots attributes that make it an attractive option for your garden. Read this article to learn more.
Although climate change is an existential threat to our planet, or at least to our species, it has made growing tulip trees a possibility in southern Minnesota and the Twin Cities (USDA Zone 5). Although native to the Eastern Midwest, it has been planted widely in more western regions and has become a candidate for Minnesota. It is hardy through zone 5 but with a bit of pampering will do all right in Zone 4.
Why pamper? Because it is a gorgeous shade tree. In zone 5 or warmer it grows rapidly to 70 to 130 feet with a width of 30 to 60 feet. It then can live on for centuries. In Zone 4 it is a shorter plant but that may not be a drawback. The tulip tree rewards with spring-time flowers that resemble tulips.
It provides generous shade in summer with its smooth green broadly lobed leaves. In fall the tulip tree will put on quite a show with shimmering gold and yellow colors. The native tulip tree is quite pollinator friendly, attracting bees and hummingbirds when flowering. Later in the season, bobwhites, rabbits and squirrels feed on the seeds.
Tulip trees are also known as ‘yellow poplar,’ and ‘tulip poplar’ although they are members of the magnolia family, Magnoliaceae. The tulip tree has quite a history. They were popular with early settlers for railroad ties and fence posts because of the strength of the wood. Native Americans as well as Daniel Boone used the wood to construct canoes.
If you want to give the tulip tree a go, select an area with full sun (at least 6 hours per day). Also, you’ll want a moist soil with good drainage. It is quite pH tolerant doing well in either acid or alkaline conditions although you would do well to amend the soil with quite a bit of compost when planting. It’s okay to plant from spring to late fall. You will want to mulch the roots quite a bit as they are shallow. Also, a growing tree needs lots of water, so keep an eye on it throughout the summer. As these guys get tall quickly, you will want to be careful where you site your specimen. After the first season, you should see rapid growth of a relatively maintenance-free shade tree for you and you family to enjoy for generations.
Photo credits: Wikimedia Commons (1,2)