ok, thanks.  perhaps ik

The pronunciation "sugitama" is given on so many pages that I think it's likely that a substantial 
number of people do say it that way.
.
E.g.
http://tabetainjya.com/archives/koneta/post_3366/
杉玉(すぎたま)」または「酒林(さかばやし)」と呼ばれる大小様々なこの玉は酒蔵によって大きさは違いますがたいていどの造り酒屋にも吊るさ
れているアイテムで春先に取り換えられます。
.
http://harimarche.com/store/Oimatsushuzou/
杉玉（すぎたま）とは、軒先に緑の杉玉を吊すことで...
.
http://johnnygori.blog104.fc2.com/blog-entry-2015.html
目立った看板はないため、入口の杉玉（すぎたま）を目印に。
.
http://www.sakuemon.net/blog/archives/391
これは杉玉（すぎたま）、酒林（さけばやし）と呼ばれるもので、毎年酒蔵から新酒ができると、軒下に飾ることになっています。
.
http://d.hatena.ne.jp/kanazu36/20081216
杉玉（すぎたま）とわらぼっち
.
http://ja.wikipedia.org/wiki/杉玉
杉玉（すぎたま）とは、スギの葉（穂先）を集めてボール状にした造形物。
.
etc.
.
Google "verbatim" search results:
"すぎたま" About 21,500 results
"すぎだま" About 5,690 results

@@ -9,0 +10,3 @@
+<r_ele>
+<reb>すぎたま</reb>
+</r_ele>

すぎたま is in no source
simplifying expl

@@ -10,3 +9,0 @@
-<r_ele>
-<reb>すぎたま</reb>
-</r_ele>
@@ -16 +13 @@
-<gloss g_type="expl">ball made from sprigs of Japanese cedar, traditionally hung by sake brewers outside their brewery in the eaves</gloss>
+<gloss g_type="expl">ball made from sprigs of Japanese cedar, traditionally hung in the eaves of sake breweries</gloss>

obviously an expl - should be marked as such.
originally hung when production began in the midst of 
winter. in the time it took the sprigs to turn brown, the 
sake would have finished. nowadays it's apparently too 
expensive to hang up new ones each year so they are brown 
all the year round

@@ -15 +15,2 @@
-<gloss>ball-like object made from sprigs of Japanese cedar, hung by sake brewers outside their brewery in the eaves to inform people that a new brew of sake has been produced</gloss>
+<gloss>sugidama</gloss>
+<gloss g_type="expl">ball made from sprigs of Japanese cedar, traditionally hung by sake brewers outside their brewery in the eaves</gloss>

すぎだま is the pronunciation used in the video
https://www.youtube.com/watch?v=NlnM1OCewp8
.
Also:
"Une sugidama (杉玉) est une boule ..."
http://fr.wikipedia.org/wiki/Sugidama

@@ -7,0 +8,3 @@
+<reb>すぎだま</reb>
+</r_ele>
+<r_ele>
@@ -12 +15 @@
-<gloss>ball-like object made of Japanese cedar which is hung by sake brewers outside their brewery in the eaves to inform people that a new brew of sake has been produced</gloss>
+<gloss>ball-like object made from sprigs of Japanese cedar, hung by sake brewers outside their brewery in the eaves to inform people that a new brew of sake has been produced</gloss>