I'm looking for industry recognized
specifications or standards for transplanting
large trees (over 4" in caliper). In particular,
I am interested in specifications for root ball
size and transplanting methods.

If you know of a publication that identifies
these standards,I am interested in that as well.


Thanks,

Scott Diffenderfer

Reply to post by Scott Diffenderfer, on July 31, 1999 at 16:49:09:

Hi Scott. ANSI Z60.1-1990 American Standard for Nursery Stock Sec 1.2 gives minimum root spreads for "Bare Root" trees in table 1.2.1 and provides an additional size increment for collected (rather than nursery) stock, but only goes up to 3". 1.31. gives minimum ball sizes for sizes up to 8" nursery grown. I guess it's safe to assume that collected transplants would need to be larger by at least the sort of increment suggested in 1.2.1.

There is a 1996 standard, but I could not locate it at the moment.

Reply to post by Scott Diffenderfer, on July 31, 1999 at 16:49:09:

Just left Jim Urban's presentation at ISA Conference. He showed a slide from the new AIA Architectual Graphic Standards 9th Ed. 1998 Cummulative Supplement on tree planting. It reproduces a chart from an older JofA articel with minimum soil volumes for tree sizes from 4" upward. They are ultimate sizes in place and soil volumes are for optimum performance at that size but you could probably infer transplant success and performance or re-establishment difficulty with given soil volumes.

Reply to post by Scott Cullen, on July 31, 1999 at 16:49:09:

Hi Scott!
The ANLA, formerly AAn, has an American Standard For Nursery Stock, which gives ball sizes up to 8 inch trees. I have a copy of the 1986 edition, and feel it has been revised. Give them a call, in Washington D.C. at 202 789 2900.
Take care, Scott.
Verytreely,
Lew

Reply to post by Scott Diffenderfer, on July 31, 1999 at 16:49:09:

Scott, I'd be interested to know if you discovered anything in addition to what was posted in the thread thusfar.

Scott

Reply to post by Scott Cullen, on July 31, 1999 at 16:49:09:

Hi Scott,

Sorry I took so long to reply - I just returned
from the Urban Forestry Conference in Seattle.

I did find the ANSI standards used by the
nursery profession and they were very helpful.

If you would like to see the report I used this
information in, please let me know and I'll
bring it to the ASCA meeting in Texas - I think
you find it intersting.

Scott Diffenderfer
be interested in the

Reply to post by Scott Diffenderfer, on July 31, 1999 at 16:49:09:

If you haven't checked this one yet...

Principles and Practices of Planting Trees & Shrubs by Gary Watson & E.B. Himelick has excellent info. and is available from ISA.