Host an Event Volunteer Join Tickets

Support the plant database you love!

Q. Who is Mr. Smarty Plants?

A: There are those who suspect Wildflower Center volunteers are the culpable and capable culprits. Yet, others think staff members play some, albeit small, role. You can torture us with your plant questions, but we will never reveal the Green Guru's secret identity.

Help us grow by giving to the Plant Database Fund or by becoming a member

Did you know you can access the Native Plant Information Network with your web-enabled smartphone?

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
See a list of all Smarty Plants questions

Please forgive us, but Mr. Smarty Plants has been overwhelmed by a flood of mail and must take a break for awhile to catch up. We hope to be accepting new questions again soon. Thank you!

Need help with plant identification, visit the plant identification page.

 
rate this answer
Not Yet Rated

Monday - March 23, 2009

From: Calgary, AB
Region: Canada
Topic: Cacti and Succulents
Title: Can I have success planting Adams Needle in Calgary, Alberta? Maybe.
Answered by: Jimmy Mills

QUESTION:

I live in Calgary, Alberta and am wondering if I could have success planting Adams Needle in this climate (lots of chinook winds in the winter with large fluctuations in temperatures).

ANSWER:

Adam's Needle Yucca filamentosa (Adam's needle) is a hardy plant that  is widely distributed in the U.S., extending north into Montana. It can be grown in USDA zones 4-9. A check of the Hardiness Zones map indicates that Calgary is in zone 3a. The average minimum temperature in zone 4 ranges from -34.4 °C to -28.9°c. The range in zone 3a is from -39.9°C to -37.3°C, so you are right on the edge in terms of temperature. The plant grows about 2-3 ft tall and 2 ft wide with a flowering stalk up to 6 ft tall. This could be a problem in strong winds.

Another Yucca, the Soapweed yucca Yucca glauca (soapweed yucca)  is similar in growth habit to Adam's Needle and naturally occurs in Alberta. It can grow in zone 3.

This link takes you to a website  with a discussion about growing these two Yuccas in Canada.

 

 

 

More Cacti and Succulents Questions

Landscaping with native plants in Austin
October 06, 2005 - I'm expanding a flower bed in front of my house and would like to keep it all natives. 1) How do I find out what type of soil I should add? (I live near Hyde Park, Austin and haven't had a soil te...
view the full question and answer

Possibly non-native succulent identification
March 27, 2008 - My mother has a plant that grows on a stalk, 2.5' tall, leaves are about 4-5" on the mature plant. The leaves are scalloped on the edges and seeds grown in the scallops & fall off and make new plan...
view the full question and answer

Century plants spread through offshots from Rye TX
September 20, 2010 - How do century plants spread? Are the little ones the babies?
view the full question and answer

Central Texas plant to grow in cavity in cedar (Juniperus ashei)
February 27, 2010 - Is there a CenTX native that would be happy in a one-gallon cavity in a Cedar tree? I'd like to disguise an amputated limb. I'd consider a Bromeliad or Staghorn fern, but would prefer a native.
view the full question and answer

Plants for 100 gal. pot by pool from Ft. Worth TX
June 23, 2012 - What North Texas evergreen or combination of evergreen plants, bushes or trees could thrive in a huge, 100-gallon clay pot (immovable!) that is situated in full sun year round in an exposed area n...
view the full question and answer

Support the Wildflower Center by Donating Online or Becoming a Member today.