PGRs for Sweet Gums

#1
I know, I know...Snipper or similar chems to prevent gum ball formation on Liquidamber is pretty much a waste of time, but I have a client who is insistent that I give it a shot. Does anyone have any idea what the growing degree day target would be for treatment? JD, I’m looking at you...
 

JD3000

Well-Known Member
#2
I've heard good things about Pinscher injections. If I recall, sweetgum calls for a late summer/early autumn injection but I believe the first year may also require a spring injection for optimal results.

Floral sprays can work but timing is super critical.

No good GDD info off the top of my head.
 

JD3000

Well-Known Member
#4
Just things Ive heard. There could be studies but I'm unaware cuz I never really care about fruit control. Always referred someone else for that work.
 
#6
Had an interesting conversation with my ultra-knowledgeable chem supplier yesterday. Apparently Atrimmec is labeled for fruit elimination in addition to being a growth inhibitor, and can be applied as a trunk spray. I’m not super optimistic that it would work, but I may buy some to play with on sweet gums. The key is still applying just before bloom. Still trying to figure out when that is...
 
#7
Had an interesting conversation with my ultra-knowledgeable chem supplier yesterday. Apparently Atrimmec is labeled for fruit elimination in addition to being a growth inhibitor, and can be applied as a trunk spray. I’m not super optimistic that it would work, but I may buy some to play with on sweet gums. The key is still applying just before bloom. Still trying to figure out when that is...
FYI - I've tried Atrimmec bark sprays on crabapple and cottonwood trees and it didn't work
 
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