Russian Sunflowers must get really tall in Kentucky; looks like from here when You measured them they were just under 11 feet tall. Kentucky must sure have a plant friendly climate. Russians here usually, providing its not a dry spell peak out at about 8 feet.
Brandon was merely relaying what he had been told - by no means do I know enough about all of this to predict such things - I just hope for the best! Those are some awesome looking sunflowers, we've never had any get that big! I hope that this year follows these locust blooms for the both of us.
Don't think I ever seen one get that tall. I read your comment on Brandon's garden post and I have to admit I'm with you on the signs. You mentioned dog days on tobacco and I have to agree and another thing I've seen is we never set it on a east wind but I've helped people reset that did.
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