Here in Mn I find the Native Basswoods very dependable and have now had large (80# plus) crops 2 
years in a row. We tend to get 1/3 or better of our crop each year from Basswood. 

The landscape varieties of which there are 3 or 4 varieites bloom earlier and seem less dependable in 
frequency and poundage.

The native varieites also produce a honey which has a light green tinge to the color while the 
landscape stuff is water white. Around here the landscape basswood is usually done blooming when 
the native starts.  

As we hear often all beekeeping is local. 

I have heard many times about the not every year concept of poroducing nectar. My take on that is in 
the forest there are 1000's of basswood trees and I can only assume that they are not all on the same 
nectar producing schedule. 

******************************************************
* Full guidelines for BEE-L posting are at:          *
* http://www.honeybeeworld.com/bee-l/guidelines.htm  *
******************************************************