QUOTE(dr rockster @ Jan 25 2008, 04:53 AM)

What are you lot on about?
Your so called Elephant strain has to be grown for what,6 months veg and 4 months flower so that can't be done outdoors in Hawaii as you can get 2 crops per year growing in their tropical photoperiod can't you?
So this mega girl could only happen with 6 months veg which you can't get at that latitude never mind anywhere else on the planet.
Ofcourse you can get 6 months of veg in Hawaii mate. Hawaii is aprox. 20° north, where daylight hours are sufficiently above 12 hours between april and september. The strains from around that region are very sensative to photoperiod, just a few minutes difference in photoperiod dictates whether such strains will veg or flower. You can even get 6 months of veg at 10° north/south with a regional strain. You can only get two crops a year from that region if you bring in genetics from considerably further latitudes that are happy to flower when the photoperiod is well above 12/12. Strains from around the region will only flower once in the year and will veg for a good 6 months.
Check out the table below to see the length of day during the year at different latitudes. The closer to the equator you get, the more sensative a regional strain will be to changes in photoperiod because of the fact that day lengths change less throughout the year.
http://encarta.msn.com/media_701500905/hou...titude.html#rev QUOTE
Thai is not planted beneath the jungle canopy fullstop.
That's correct, I don't know who stated that. It certainly wasn't me. No one with any common sense would plant their crop under the jungle canopy. You select a large opening where it's bright to plant your crop.
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True jungle allows 3% of sunlight to reach the jungle floor, go figure?
That's not to say that the largest and quickest growing sativas don't come from dense jungle regions. Infact, it is precisely because of this premium of light under the canopy that you find the largest and quickest growing strains in that region. As soon as a tropical typhoon, turmites or old age brings down a tree in the jungle, the race is on for all of the vegetation below to grow upwards and overshadow it's neighbours. Only the fastest and largest sativas will make it.
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Give anybody 6 months veg and planting out and you'll get a 20 footer of Durban Poison,Hollands Hope,Jack Herer,you name the strain,anybody with even no 'gigantic' genes can get a 20 foot plant with adequate veg time in Europe,never mind the tropics.
That's right mate. Most strains will grow massive with enough veg time. However, the original question was which strain grows the largest, not which strains can grow large. Let's presume that he meant which strain will grow the largest outdoors, without the use of a giant green house or supplementary lighting. In which case, it would be a tropical sativa because it would grow the fastest in the alotted veg time and stretch the most in the alloted flowering time.
However, if one was to use a giant greenhouse with supplementary light to hault flowering, the answer is far less clear. In such an instance, the tropical sativa might grow fastest but once it reaches it's maximum height, there may be other strains that will continue growing and catch up. The proverbial tortoise and hare scenario. In a natural environment, the largest strain will be a tropical sativa in a tropical region. Which tropical sativa grows the largest of them all, I cannot say. Elephant weed is as good a name as any other.
Anyhow, I hope that I've helped to answer some of your questions. I'm off for a slice of canna marzipan.