Shade cloth recommended % for Young Plants - Growing in Greenhouses - International Cannagraphic Magazine Forums

03-21-2007, 06:29 PM

I am wanting to setup a greenhouse shade cloth roof on my greenhouse to dull down the sun burn when I move the plants into it early on. I'm going to use 4 400w's to light it up to extend the sunlight in may. Basically I have 4 choices it looks like:

47%
55%
63%
73%

I've got a poly film cover on the greenhouse and its a gothic arch pole frame greenhouse. I'm also trying to figure out the heater calculations for the winter. I'm going to do some tests in the winter and see what the deal is just for my own curiosity.

suzycremecheese · 03-21-2007, 07:23 PM

47% will probably prevent sunburn but you might be able to use the 73% at a later date to induce flowering slightly early. Just a thought not based on experience.

supermanlives · 03-22-2007, 07:36 PM

go with the 47. i once posted heater calculations for greenhouses i will try and find formula again. i am starting over myself .greenhouses in s cali are a whole new game for me compared to east coast.farmtek.com or clearspan.com has great gh stuff

04-13-2007, 10:58 PM

I think we may be neighbors if you are the old tom hill from OG.

04-13-2007, 11:04 PM

Just never found i need it, i germ my plants under natural light in tunnels at 30 degrees. Does not appear to harm any even with the strongest sun here.

Nice to see you around Chodo..

Tom, Suzy..good evening.

Peace, hhf

04-15-2007, 06:09 AM

Here is a pic of my greenhouse.

04-16-2007, 01:34 AM

Gotta get a generator and some fans first. Then For sure!

thc43 · 04-16-2007, 08:47 AM

i live in oz some of the harshes rays in the word. if the soil is wet you wont need any cloth if your worried about heat burning or reflecting back onto seedlings bring them inside under a flouro till there a week onld then let them go crazy in the 100% sunlight. Or use some shade cloth only for the first week or two.

summer has just finnished here but still have the odd hot 30c day without clouds. Has been no problem for these clones.

04-18-2007, 09:26 PM

I would only cover that greenhouse in such a manner than you can roll it on or off quickly.

the only reason to have it rolled on would be very cold days, or choppers.
and we worry less and less about choppers anymore.

cdc · 05-22-2007, 03:05 AM

i think shade cloth is a good idea if the plants are young ...but when they get bigger let em have it ..full ball :P

03-21-2007, 06:29 PM	#1
Guest Guest Posts: n/a	Shade cloth recommended % for Young Plants I am wanting to setup a greenhouse shade cloth roof on my greenhouse to dull down the sun burn when I move the plants into it early on. I'm going to use 4 400w's to light it up to extend the sunlight in may. Basically I have 4 choices it looks like: 47% 55% 63% 73% I've got a poly film cover on the greenhouse and its a gothic arch pole frame greenhouse. I'm also trying to figure out the heater calculations for the winter. I'm going to do some tests in the winter and see what the deal is just for my own curiosity.
	Quote

03-21-2007, 07:23 PM	#2
suzycremecheese Member Join Date: Feb 2006 Posts: 117	47% will probably prevent sunburn but you might be able to use the 73% at a later date to induce flowering slightly early. Just a thought not based on experience.
	Quote

03-22-2007, 07:36 PM	#3
supermanlives Banned Join Date: Feb 2006 Location: gilligans island Posts: 13,142	go with the 47. i once posted heater calculations for greenhouses i will try and find formula again. i am starting over myself .greenhouses in s cali are a whole new game for me compared to east coast.farmtek.com or clearspan.com has great gh stuff Last edited by supermanlives; 03-22-2007 at 07:38 PM..
	Quote

04-13-2007, 10:58 PM	#4
Guest Guest Posts: n/a	I think we may be neighbors if you are the old tom hill from OG.
	Quote

04-13-2007, 11:04 PM	#5
Guest Guest Posts: n/a	Just never found i need it, i germ my plants under natural light in tunnels at 30 degrees. Does not appear to harm any even with the strongest sun here. Nice to see you around Chodo.. Tom, Suzy..good evening. Peace, hhf
	Quote

04-15-2007, 06:09 AM	#6
Guest Guest Posts: n/a	Here is a pic of my greenhouse.
	Quote

04-16-2007, 01:34 AM	#7
Guest Guest Posts: n/a	Gotta get a generator and some fans first. Then For sure!
	Quote

04-16-2007, 08:47 AM	#8
thc43 Senior Member Join Date: Feb 2007 Posts: 1,137	i live in oz some of the harshes rays in the word. if the soil is wet you wont need any cloth if your worried about heat burning or reflecting back onto seedlings bring them inside under a flouro till there a week onld then let them go crazy in the 100% sunlight. Or use some shade cloth only for the first week or two. summer has just finnished here but still have the odd hot 30c day without clouds. Has been no problem for these clones.
	Quote

04-18-2007, 09:26 PM	#9
Neptune Guest Posts: n/a	I would only cover that greenhouse in such a manner than you can roll it on or off quickly. the only reason to have it rolled on would be very cold days, or choppers. and we worry less and less about choppers anymore.
	Quote

05-22-2007, 03:05 AM	#10
cdc Member Join Date: May 2007 Posts: 192	i think shade cloth is a good idea if the plants are young ...but when they get bigger let em have it ..full ball :P
	Quote