catalpa tree tolerance

I love my catalpa trees here on the coast, but am moving soon to the interior.What tempurature will they survive in?

 

http://www.google.ca/search?hl=en&q=hardiness,+catalpa&meta=

speciosa seems a bit hardier than bignoniodes

 

Catalpas are a feature of continental climate communities. The US National Champion northern catalpa is at Whitman College in Walla Walla, WA.

 

Ron, can you tell me warmest and coldest temps they will survive?

 

via the google link that was allready posted:
catalpa speciosa: http://www.urbanext.uiuc.edu/treeselector/index_tree.cfm?id=30
and catalpa bignoniodes: http://www.urbanext.uiuc.edu/treeselector/index_tree.cfm?id=29

those links have all the information about those two trees, their hardiness and other growing conditions they prefer.

 

Northern Catalpa (C. speciosa) will be good down to at least -30ºC though you might see twig dieback at that temperature. On the hot side....not a big deal but in areas with low humidity & low rainfall it is going to need consistently moist soil.

Simon

 

Thank you Simon.. Jakki