Hemp Greenhouse Expand

hemp greenhouse for cannabis grow by hydroponic plant bag

1. Control of light and temperature: The light and temperature can be precisely controlled in the greenhouse to create the most suitable environmental conditions for the growth of cannabis.

2. Protect cannabis growth: Greenhouses can provide a relatively stable growth environment for cannabis, free from external climate and other environmental factors.

3. High yield: Compared with outdoor cultivation, greenhouse can provide higher yield and higher quality.

4. Good quality: Cannabis in a greenhouse environment can obtain higher quality and better growing conditions.

5. Increased security: Greenhouses can provide higher security, avoiding the risk of theft and damage to cannabis plants.

The cannabis grow in the plastic plant bag on the seeding bed, with growing light. 

the greenhouse is covering film with shading net.  the greenhouse frame is hot dip galvanized tube, square tube or round tube for your choose.

if you are intresed in cannabis greenhouse, please contact us. 

Growing light. Light is all a plant needs when grown outdoors. But since you're growing indoors, you'll need to recreate a sun-like light level. When plants are young, they need blue light; when they are growing and sprouting, they need yellow, amber and red light. When building a system, you have some options:
High intensity discharge lamps (HID) such as high pressure sodium lamps (HPS) and metal halide lamps (MH). Both of these lights generate a lot of heat and have a lot of power, but they also use more energy than normal lights.
fluorescent light. This type is great for young plants and doesn't use up much electricity. However, once your plants have grown, you'll need to give them more light.
"Conservative Light Lamps (CFLs)". It's also easy to find, and doesn't drain too much power -- you'll need to charge it for that reason. This light works well as a supplemental lighting.
LED lights. Depending on the type, LEDs use less electricity than other lights but also generate less heat. When you go shopping for this type of light, be aware that some brands are more effective and long-lasting than others. 
The technology behind LEDs is becoming more and more refined and the latest trend is broad-spectrum LED grow lights. They are able to cover the growing range of 420 to 730 while consuming 82% less power than narrowband devices. They generally stay cooler, don't release a lot of heat, and can last up to 60,000 hours.

Pay attention to the first stage. The first stage of cannabis growth is called the vegetative stage. If you plan to use LED, MH, or HPS, use the light source 20 inches or more above the plants, or lower the light source an inch per day until you deem the distance is appropriate. Too close to the light source and the plants will dry out and turn brown, while too far away the plants will grow too tall as they struggle to reach the light source.
Start by moving the light up and down twice a day until you feel the distance is right enough that the light from the light source is well absorbed by the plants.
During the first stages of plant growth, light should be guaranteed at least "18 to 24 hours per day." The longer the light time, the faster the plants will grow. (But your electricity bill will eat up more too).