Indoor start for Greenhouse - Growing in Greenhouses - International Cannagraphic Magazine Forums

eblaze · 01-25-2011, 05:12 PM

Indoor start for High Tunnel Grow. Emerald Rectangle. Elevation 8000’, Lattitude 38.5 N.

I am beginning a grow for the 2011 outdoor/greenhouse season, and am in search of some much needed advice. I am coming out of the basement and need some help with adapting an indoor start to a outdoor crop without forcing flower upon setting out. I am ready to pop seeds and take cuttings but want to make sure that I’m heading in the right direction.

Scenario A: Veg under 14.5 hour day from seed. Set out in greenhouse end of May, when the natural day length matches the 14.5 hour’s they are used to, making sure to sync the start of my indoor day to match the actual sunrise during the last week of May. Let the crop finish naturally, hoping that I will be able to heat this structure enough well into October. I should probably through down for the double poly on the roof, and will need a bad ass propane heater, or three.

Scenario B: Same Veg period and light schedule but introduce a light dep to finish by early –mid sept. When should I start the dep, and how long does it need to run? Will flower be forced in a couple of weeks and then the naturally diminishing day length provide the kick to maintain flower even though days are still long? Seems like I may need to tarp the entire flowering period or risk the dreaded re-veg!

Scenario C: To do the light dep, do I need to start w an 18/6 veg, and provide day lengthening lighting in the greenhouse (I was thinking x-mas tree lights or something similar) so they don’t begin flowering until they veg a month or so more, at which point I can tarp for a couple of weeks then let the naturally diminishing day of roughly 14 hours (Aug 5th), run it from there? I am ready to pop seeds but want to make sure I give them the right light cycle from the beginning? Generators are not an option, and I only have about 10A of power to work with, so lighting needs to be low energy. Will light without lumens screw me?

I am ready to pop seeds and take cuttings, but am hoping to look before I leap. The leap is inevitable.
Thanks a bunch.

Krull · 01-26-2011, 09:34 AM

I would go with B and in that case you dont need to tarp for the whole flo period, here you can find a great thread by silverback on the topic:

60/60 Forced Flowering Approach

Peace

=K

eblaze · 01-28-2011, 05:34 PM

Silverbacks 60/60 thread is quite informative. I am looking at the world under a new set of greenhouse oriented eyes. I'm not sure how much longer I'm gonna pay electricity if I can pull 3-4 crops from a g-house.

As far as this years g-house proj, after some valuable advice I am leaning towards the 14.5 to 15 hour day length for an extended indoor veg. This will sync with my local day lenght (+/- an hour) at the end of May when I anticipate setting out into the greenhouse. Then it's either a full term (depending on some serious additional heat) or a light dep beginning around a week to two after solstice.

I still think about the 18/6 with supplamental lighting till solstice then just go natural. I have never done this and would hope that the 18 to 15 hour day may help to kickstart flower a bit early. Anyone elese veg long at 18/6 then just stop supplamenting lights and go full term under the sun at solstice?

BudMan30 · 03-25-2011, 04:11 AM

im interested on how it turns out man good luck. get some pics on here because im doin the same thing you are. whats the size of the greenhouse?

01-25-2011, 05:12 PM	#1
eblaze New Member Join Date: Jan 2011 Location: emerald rectangle Posts: 2	Indoor start for Greenhouse Indoor start for High Tunnel Grow. Emerald Rectangle. Elevation 8000’, Lattitude 38.5 N. I am beginning a grow for the 2011 outdoor/greenhouse season, and am in search of some much needed advice. I am coming out of the basement and need some help with adapting an indoor start to a outdoor crop without forcing flower upon setting out. I am ready to pop seeds and take cuttings but want to make sure that I’m heading in the right direction. Scenario A: Veg under 14.5 hour day from seed. Set out in greenhouse end of May, when the natural day length matches the 14.5 hour’s they are used to, making sure to sync the start of my indoor day to match the actual sunrise during the last week of May. Let the crop finish naturally, hoping that I will be able to heat this structure enough well into October. I should probably through down for the double poly on the roof, and will need a bad ass propane heater, or three. Scenario B: Same Veg period and light schedule but introduce a light dep to finish by early –mid sept. When should I start the dep, and how long does it need to run? Will flower be forced in a couple of weeks and then the naturally diminishing day length provide the kick to maintain flower even though days are still long? Seems like I may need to tarp the entire flowering period or risk the dreaded re-veg! Scenario C: To do the light dep, do I need to start w an 18/6 veg, and provide day lengthening lighting in the greenhouse (I was thinking x-mas tree lights or something similar) so they don’t begin flowering until they veg a month or so more, at which point I can tarp for a couple of weeks then let the naturally diminishing day of roughly 14 hours (Aug 5th), run it from there? I am ready to pop seeds but want to make sure I give them the right light cycle from the beginning? Generators are not an option, and I only have about 10A of power to work with, so lighting needs to be low energy. Will light without lumens screw me? I am ready to pop seeds and take cuttings, but am hoping to look before I leap. The leap is inevitable. Thanks a bunch.
	Quote

01-26-2011, 09:34 AM	#2
Krull Soul Feeder Join Date: Apr 2009 Location: Underground Posts: 2,359	I would go with B and in that case you dont need to tarp for the whole flo period, here you can find a great thread by silverback on the topic: 60/60 Forced Flowering Approach Peace =K __________________ Don't judge each day by the harvest you reap but by the seeds that you plant.
	Quote

01-28-2011, 05:34 PM	#3
eblaze New Member Join Date: Jan 2011 Location: emerald rectangle Posts: 2	Silverbacks 60/60 thread is quite informative. I am looking at the world under a new set of greenhouse oriented eyes. I'm not sure how much longer I'm gonna pay electricity if I can pull 3-4 crops from a g-house. As far as this years g-house proj, after some valuable advice I am leaning towards the 14.5 to 15 hour day length for an extended indoor veg. This will sync with my local day lenght (+/- an hour) at the end of May when I anticipate setting out into the greenhouse. Then it's either a full term (depending on some serious additional heat) or a light dep beginning around a week to two after solstice. I still think about the 18/6 with supplamental lighting till solstice then just go natural. I have never done this and would hope that the 18 to 15 hour day may help to kickstart flower a bit early. Anyone elese veg long at 18/6 then just stop supplamenting lights and go full term under the sun at solstice?
	Quote

03-25-2011, 04:11 AM	#4
BudMan30 Member Join Date: Feb 2011 Posts: 93	im interested on how it turns out man good luck. get some pics on here because im doin the same thing you are. whats the size of the greenhouse?
	Quote