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http://www.aussiehomebrewer.com/forum/inde...;showarticle=91
eg.
HARVESTING
"...Harvest window is about two weeks around early march, but cultivars ripen differently and climate may also affect ripening.
Cilurzo's methods on determining hop ripeness:
Pull off a bract (leafy 'petal'), hold it up to the light and it should be a darker green rather than a light translucent green.
The hop should be sticky with lupulin (yellow pollen) and have a pungent positive musty hop aroma.
Tear a flower in half lengthways and lupulin should be starting to bind together and lupulin balls should be around the size of the tip of a ballpoint pen.
This is his preferred method: Take a hop cone by the pointy end and brush the bracts against their natural direction:
If one or none bracts come off, the hops are not ripe.
If you do it a few times and a few bracts fall off, this is perfect for using in a wet hop beer.
If all bracts fall off the first time, this is considered to be ripe for commercial purpose.
I questioned Mr Cilurzo's reason for chosing earlier harvested hops wet and recieved this (logical) response:
"I just like the flavor of the under ripe hops in a wet hop beer, it tends to leave a greener note in the beer."
When picking, wear a long sleeved shirt (even though it is summer) and gloves. Hops are extremely scratchy and have tiny hooks that can break off and irritate your skin, you have been warned. Hop bine scratches are reasonably painful and leave long lasting red marks.
Cop cones mature from the top of the bine first. Ripe cones feel papery, have accentuated pungency, they are lighter and may have browning on the tops of the cone.
To pick, simply pull cones from bine with hands.
I am unsure of typical yields, especially from established plants, but I harvested around 1kg wet from each of my first year hop plants..."
2/
http://groups.yahoo.com/group/Grow-Hops/