Explore Plants

Share

Ask Mr. Smarty Plants

Ask Mr. Smarty Plants is a free service provided by the staff and volunteers at the Lady Bird Johnson Wildflower Center.

Search Smarty Plants
    
 

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.

rate this answer
2 ratings

Saturday - April 21, 2012

From: Millbrook, NY
Region: Northeast
Topic: Container Gardens, Planting, Shrubs, Trees
Title: Shrub that will grow outside in Zone 5 from Millbrook NY
Answered by: Barbara Medford

QUESTION:

Is there any shrub, tree or other sort of plant that will grow well in zone 5 in a very large container outdoors?

ANSWER:

Any plant being grown in a container outside in Zone 5 is going to be a difficulty. Plants' root are ordinarily insulated by the Earth itself, both from heat and, certainly, from cold, as in your case. The only insulation your outdoor pot has would be a few inches of potting soil and a very thin container wall, whether it were pottery, plastic or stone. You are correct that your area in Duchess County is in Zone 5b, which means your average annual minimum temperature ranges from -15 to -10 deg. F. We don't have any way to rate cold resistance of plant roots, but we will bet there are not any that would go for those temperatures from such an exposed situation. The main problem with exposing plants to cold is that the water in those plants, especially that stored in the roots, would freeze, expand and rupture cell walls in the plant, resulting in death for the plant.

Please read our How-To Article on Container Gardening with Native Plants. Of course, down here in Texas we are more in fear of heat damaging container plants than cold, but the criteria for selecting pots are still valid. There are a number of trees and shrubs native to your area that would be just fine planted in the ground, but not in a pot. If you purchased a large pot, it would be a considerable expense, and the likelihood is high that you would have to replace the plant every year, also expensive.

Smaller pots that could be taken into a protected area, like a garage, seasonally could give you some outdoor color and form in warm weather, but that's about the best you could hope for. If you have a particularly attractive pot already, and it has drainage holes, you could plant blooming annuals every Spring and leave the pot empty as a decorative feature in the cold weather.

 

More Planting Questions

Yard Trees for Burleson, TX
July 24, 2011 - We need to replace 2 mature pear trees in our front yard, north side of the house in Burleson, TX. We are looking for faster growing trees that will last for decades that resist disease in clay soil....
view the full question and answer

Re-landscaping in Stephenville, TX.
November 17, 2012 - I prefer native plants. We are re-landsacaping, so I need grass, ground cover, vines and flowers to plant in our back yard. We have many trees and the whole yard is shady. A small area might be con...
view the full question and answer

Native flower bed with part sun
December 05, 2008 - I have recently put in three small flower beds and replaced the hard clay with decent dirt. The site is shaded in the AM but mostly sun in the PM. I would like to plant natives - what can you recommen...
view the full question and answer

Need a shade tree for an enclosed courtyard in Las Cruces, NM
September 24, 2012 - I HAVE A WEST FACING COURTYARD ENCLOSED WITH A 6' STUCCO WALL AND I WANT TO ADD A SHADE TREE. CURRENTLY HAVE SEVERAL MESQUITE TREES, DESERT WILLOW, CHINESE PISTACHE & VITEX TREES IN THE FRONT AREA ...
view the full question and answer

Transplant shock in my Nuttall Oak tree in Moore, OK.
July 23, 2009 - I had a Nutall oak tree planted; it is 5 inches in diameter and about 24 feet tall. It was planted in March of this year, leafed out ok; now since June 20th I have had a large quantity of the leaves t...
view the full question and answer

Smarty Plants's Facebook profile 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.