Chapter 6: Grow Rooms & Greenhouses

Marijuana Horticulture

Chapter 6: Grow Rooms & Greenhouses Marijuana Horticulture: The Indoor / Outdoor Medical Grower’s Bible

by Jorge Cervantes

The best location for a grow room is in an obscure corner of a basement, where the temperature is easy to keep constant year-round. Basements are well insulated by concrete […]

Light

Light

Growing Marijuana in Rockwool

Plant growth involves the conversion of light energy into plant-building materials (photosynthesis, see chapter 2). Two factors are important for optimal growth. In the first place, the light intensity. Light intensity is expressed in ‘lumens’. At least 50,000 lumens are needed for […]

Growing Marijuana Hydroponically

Growing Marijuana Hydroponically

You can realistically use almost any portion of your house, garage or shed to grow indoor marijuana plants. Just remember to keep the most basic of plant needs in mind when setting up your growing location. If you are not sure what your marijuana plant requires, then just imagine looking […]

Marijuana Quality and Yield

Marijuana Quality and Yield

by Ed Rosenthal

Yield is the obsession of many gardeners. How much will a plant produce ? That may seem like a simple question, but there are many facets. For indoor gardeners, space, watts, and time are considerations. For outdoor gardeners space, shape, […]

All you need to know about Mylar

All you need to know about Mylar

Mylar reflects about 94% of the light.

One of the best materials on the market for light proofing.

Mylar is a product that serves many purposes. The insulation industry developed this product to withstand severe temperatures. It acts as a moisture barrier as well as a […]

H.I.D Light Description

H.I.D Light Description

High-pressure sodium lamps contain an internal arc tube made of a translucent ceramic material (a form of aluminium oxide known as “polycrystalline alumina”). Glass and quartz cannot be used since they cannot maintain structural strength at the high temperatures (up to 1300 degrees C) encountered here, and hot sodium chemically […]

Do roots really grow in the dark?

Do roots really grow in the dark?

Note: diels alder was instrumental in helping turn this very technical subject into something much easier to understand. This is by no means a complete, technical explanation of Botany, rather it’s an understanding of the basic principles.

Many times I’ve seen in posts that “roots grow […]

Light bending

Cannabis Grow Bible

Light bending The Cannabis Grow Bible

by Greg Green

Light bending occurs when a plant tries to grow at an angle towards the light. You may have seen some of the outside plants in your grow area bending towards the light to try and get their share. […]

Lighting factors and how to get the most from your light

Cannabis Grow Bible

Lighting factors and how to get the most from your light The Cannabis Grow Bible

by Greg Green

The reflector part of the lighting kit can also cause a difference in lumens cast between two different systems using the same bulb. The reflector does it exactly what […]

Lumens and marijuana growing

Cannabis Grow Bible

Lumens and marijuana growing The Cannabis Grow Bible

by Greg Green

Now for the big question. How many Lumens do I need? Well this depends on three things. (1) How much do you want to spend? (2) How many plants do you have? (3) How big is […]

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