I dont think that 1-2 hours is enough time for your plant to absorb enough of the sugars to anything. considering that the plant gathers water and nutes during day hours and uses them during the night hours. so technicly i would beleive you would have to give it at least 24 hours for the plant to absorb the water and carbs. IF you were going to attempt this i would give it to your plant at the last part of your flush, and let the plant grow for a week or two before you harvest.
good luck
And that's why it doesn't work for most people - they want to believe it takes days for a plant to absorb anything. But not water, a plant will readily consume a lot of water quickly when it's thirsty. You aren't 'feeding' the plant sugars or anything, you are sneaking it in along with the water the plant 'drinks'. And that only takes an hour or two.
And after the plant has been cut, the absorbed (and flavored) water will continue to disseminate through the plant as it's used and will reach the smaller limbs/branches/leaves.
Here's a better explanation:
"Anything you put in your plants water will affect the taste of the finished product particularly if you harvest it right afterwards. What you want to do is select a flavoring that is very concentrated. Lets take orange for an example. You could use orange juice but if you could find concentrated orange extract you would have less pulp etc to deal with. You will find some concentrated flavor extracts in the grocery store. Want your pot to smell like vanilla? Vanilla extract is cheap and readily available, so is lemon extract (cooking variety). Other extracts can be found in stores that specialise in baking supplies.
Lets say you can't find any of that and you want to use what you have on hand. I took the example of orange flavoring. If all you have is orange juice you could use that. I would suggest filtering it first to get out as much of the pulp as possible. A coffee filter works well but it'll take a while to filter it all. You may have to change filters a few times. Those with hydroponic units will shudder at the thought of a lot of goop going through their system. That's why I suggested the concentrated extracts if you can find them.
It's important to do this shortly before harvest. For one thing, most extracts including the ones you make up yourself have a lot of sugar in them. This sugar will ferment and decay rapidly, even more so in a hydro unit. With hydro I recommend putting the flavoring in the water between 1 and 3 hours before harvest. This rule isn't set in stone but I heard from one grower who used a sugar based clearing solution on his crop and less than 24 hours later the water was foaming from bacteria growth. Plants draw up solution fairly quickly so one hour should be enough for some of the flavoring to reach the top. Three hours should not be enough time for bacteria to grow but you will want to dump out the solution right afterwards and clean out your unit. If you read the SU of Mar 27 you knew to use plain water for a few days before harvesting your hydro crop so all that will be in the water will be the flavoring.
If you are a soil grower it's even easier. You might think it would take longer for the flavor to work it's way through the plant but this is not the case. All you have to do is let the plant dry out a little before your apply the solution. In other words schedule a watering just before harvest. Naturally you were giving your plants plain water for several days to a week or two before harvest weren't you? Give the plant the water with the flavor when it's a little bit thirsty and it will draw it right up. One hour is more than enough time for this to happen.
After harvest it's important to give it a good cure. Resist the temptation to fast dry some of the weed to try it out. You will find it's even more harsh than it would be normally because you have added some sugar to the plant by way of the flavoring. The curing process will take care of the extra sugar and give you nice mild smoke. It will also have the flavor and aroma you are looking for."
