Growing Marijuana - an introduction
Lighting Systems & Techniques
Germination & Vegetative Stage
Flowering stage, harvesting & curing
A greenhouse provides an environment that is warmer and drier than outdoors. This is beneficial because the crop can be started earlier and flowered longer with less chance of an early frost nipping the flowers. Flowering will still start at the same time as it would have done outdoors. There are many varieties that will grow both indoors and in a greenhouse with good results.
If you are buying a greenhouse solely for the purpose of growing cannabis, a 6ft by 8ft aluminium framed house will cost about £200; the same sum will buy you only 40g of good bud on the black market so it should be viewed as an investment rather than an expenditure. Avoid the galvanised steel framed type with stick-on flexible PVC covering if you want it to last more than two seasons.
Indoor growing allows the gardener to exercise complete control over the growing environment. Length of day, levels of light, temperature, humidity and nutrient are all adjustable. Arguably the best varieties are bred for indoor growing.
Setting up an indoor growing area Planning A space as small as the average wardrobe will provide enough bud for personal use (including a few friends). Heavy tokers may want to create a larger growing area - the following method can be scaled up to virtually any size.
Plan the grow room carefully before you start construction. Ask yourself a few questions:
Have I got access to several 13A sockets?
Can I get water to the grow room easily?
Will anyone be able to see light spillage?
Will anyone be able to hear the ventilation fans?
Will anyone be able to smell the plants (it's not called skunk for nothing!).
What can I do if I want to go on holiday?
Tell nobody about your horticulture unless absolutely necessary. Buy your supplies with cash and don't give your name or address to the retailer; in the past, some retailers have been busted and their mailing lists used by the police to raid growers.
Creating a space Find a suitable sized wardrobe or cupboard. If you want something bigger, construct a box with roughcut timber covered with plywood, chipboard or plasterboard. The box could extend from floor to ceiling, giving the impression that it is an integral part of the structure of the house.
The floor of the growroom should be some sort of waterproof tray - if you bring down the ceiling of the flat below, awkward questions will be asked! The floor (wardrobes and cupboards) should be strong enough to support the weight of your plants, pots and water-soaked compost.
Make a door big enough to allow easy access to the plants and equipment inside. You could try disguising the door of a floor to ceiling box such that it is not obvious that the growing room even exists!
Line or paint the room with something reflective; matt white seems to work better than a mirror finish. Remember that the inside will have to be cleaned periodically to remove dust, compost, mould and algae.
Ventilation is very important; plants need CO2 for photosynthesis and the temperature and humidity must be kept to an acceptable level. Louvres at the top and bottom of the space will sometimes be enough but it is better to arrange for some forced ventilation. Electronics shops like Maplin or Tandy sell 240v fans for around £15. Fans need to be kept running 24 hrs/day irrespective of the length of lighting period. If you can, take the fan exhaust through an outside wall to reduce the smell. Some growers report that an ioniser operating near the exhaust end of the air vent reduces the smell considerably. A circulating fan inside the room is desirable but not essential.
For healthy growth, the temperature needs to be maintained at 15C to 30C. Cannabis will tolerate temperatures as low as 5C and as high as 40C but these do not represent ideal growing conditions. If your grow room is in an otherwise unheated area (like a cellar or garage) you will need to install some sort of electric heating controlled by a central heating thermostat.
Much of the information contained on this website would be illegal were it to be practiced in most countries around the world - including the UK. Our intent is to educate and inform NOT to encourage anyone to break the law.
Copyright © 2002 SKD