12/12 in WA

12/12 in WA according to a website dosen't start until Sept 25th... That means I'd have to wait until November to harvest? That definatly won't work, something isn't lining up am I mistaking????

--SS

In western washington your best bet is to cover the plants with black plastic to simulate the 12/12 cycle. Its a pain. Thats also why its better to have some of the fats growing indica strains for outdoor. We just don't have a long enough season here before the frost starts to hit.

Am I correct on the Sept 25th thing? Covering my plants with black plastic seems like it might encourage mold... I do have a strain from BC Grown which was bred for outdoors around here... But I mean still, flowering takes 55-60 days.. It seems like it'll be frosty before then, is my only bet covering them?

I still feel like Sept 25th isn't right or I am mistaking something, I thought it would've worked out nicely but it turns out I can't harvest till late dec/early jan?

Someone correct me :wtf:

I just read this from quick research (just a poster) someone shoot this down or verify please:

I would just add, 12/12 is a reference that applies to indoor grows, specifically. It has no application outdoors. "MOST" strains, other than pure sativas/equatorial sativas, will be within a few weeks of finishing budding by the time 12/12 is reached outdoors in nature, in the northern hemi.

I would say its true. Doing the onside grow is just designed to speed nature up. If you have a good indica strain with proven west coast results like say BC Bud then it should be done by the end of august. Start getting into sept and you have to watch for frost. And with some starins even that isn't that big a deal. They'll usually turn purple after a frost.

Cool thank you for your responses :)

Table 2: Average daylight duration for waking hours 5:00 - 21:00

STD/DST STD year round DST year round

JAN 8:56 8:56 8:56
FEB 10:16 10:16 10:16
MAR 11:55 11:55 11:55
APR 13:39 13:38 13:39
MAY 15:09 14:41 15:09
JUN 15:48 15:07 15:48
JUL 15:29 15:01 15:29
AUG 14:13 14:11 14:13
SEP 12:34 12:34 12:34
OCT 10:51 10:51 10:51
NOV 9:19 9:19 9:19
DEC 8:30 8:30 8:30

1999 12:14 12:05 12:14

http://www.worldtime.com/dst/usa/seat.txt

From August to September the hours are diminishing and certain nutes induce flowering even thought its not 12/12. I even remember Rosenthal's book about strains, 12/12/ is not always necessary. Depending on the county I would think you could make it to the end of September. I hope to maybe even make the first of Oct. :jointsmile:

Take this into consideration too. :thumbsup:

Change in photoperiod is the factor that usually triggers the developmental stages of Cannabis. Photoperiod and seasonal cycles are determined by latitude. The most even photoperiods and mildest seasonal variations are found near the equator, and the most widely fluctuating photoperiods and most radical seasonal variations are found in polar and high altitude locations. Areas in intermediate latitudes show more pronounced seasonal variation depending on their distance from the equator or height in altitude. A graph of light cycles based on latitude is helpful in exploring the maturation and cycles of Cannabis from various latitudes and the genetic adaptations of strains to their native environments.

The wavy lines follow the changes in photoperiod (daylength) for two years at various latitudes. Follow, for example, the photoperiod for 400 north latitude (Northern California) which begins along the left-hand margin with a 15-hour photoperiod on June 21 (summer solstice). As the months progress to the right, the days get shorter and the line representing photoperiod slopes downward. During July the daylength decreases to 14 hours and Cannabis plants begin to flower and produce THC. (Increased THC production is represented by an increase in the size of the dots along the line of photoperiod.) As the days get shorter the plants flower more profusely and produce more THC until a peak period is reached during October and November. After this time the photoperiod drops below 10 hours and THC production slows. High-THC plants may continue to develop until the winter solstice (shortest day of the year, around December 21) if they are protected from frost. At this point a new vegetative light cycle starts and THC production ceases. New seedlings are planted when the days begin to get long (12-14 hours) and warm from March to May. Farther north at 600 latitude the day-length changes more radically and the growing season is shorter. These conditions do not favor THC production.

Marijuana Botany - Chapter 4 - Maturation and Harvesting of Cannabis