OUTDOORS: Cannabis grows rapidly once the daylight hours start to increase during spring and on into summer. Unlimited root room and good genetics can see a plant grow to three or four meters during the vegetative phase.
HUMIDITY: Outdoors you don’t really have any control over this factor and you are at the mercy of your climate. The upside is that the variations in humidity and the robust biological functions needed to adapt to a changing grow environment makes your plants exceptionally strong!
Watering with compost tea and other organic mixes like molasses or feather meals improve soil quality and encourage healthy plant growth.
How Long Does The Vegetation Phase Last?
With hydroponics or neutral mediums you supply all of the plant’s lifeblood with pre-formulated nutrient blends. Usually customised for marijuana especially. Specialised concoctions are made exclusively for whichever soil-less medium you choose.
TEMPERATURE: Cannabis is a very hardy plant and can survive cold and heat well. Just like you or me though, it can get stressed and not function well in the extremes. Cannabis can freeze or boil to death. It can stop growing or go into stasis. It will go into survival mode if the temperatures are too high or too cold for too long. Twenty-seven degrees centigrade is the accepted ideal for vigorous cannabis growth. Indoors this is easy to achieve with fans, air conditioning units, heating and cooling mats. Lights will certainly generate heat that needs to be vented.
STRAIGHT INTO THE MEDIUM: Place seeds directly into your medium, this way you can avoid any transplant shock. More often it is easier to germinate in a small pot of your chosen medium then pot on to the garden or bigger pots.
Outdoors you need to pick your time. Know your particular climate well. Have a sun cycle app or chart to make sure you get your timing right. Too early and you risk your plants going into flower immediately, then re-vegging when the daylight increases. This is unwanted. Your flowers will not form properly when blooming begins. Too late and you will have small plants with fewer flower sites.
It does happen: Someone hands you a bag of seeds of “some great weed” for you to grow. You’re happy since you just saved some cash on seeds. The problem is, you don’t know what type of cannabis the seeds are, whether it’s sativa, indica, autoflowers, etc. We’re already off to a pretty bad start.
As an alternative to plastic pots, you can also use fabric pots (smart pots) or air pots. If you want to learn more about the different pots used to grow cannabis, check our article on the subject.
2. BAD GERMINATION
The thing is, weed isn’t just weed. There are big differences in growing characteristics among different cannabis seeds. An indica autoflower will certainly behave differently than a picky photoperiod sativa. Some strains may be suitable to grow in a colder climate, while others may require a hot, sunny environment. Some strains may need lots of nutrients, while others require only light feeding. You get the idea.
Cannabis is generally an easy plant to grow, but this doesn’t mean that mistakes don’t happen. As a matter of fact, even experienced growers get things wrong from time to time. But, by learning about common growing mistakes and how to avoid them, you can look forward to plenty of fat buds waiting for you at harvest time.
Good soil for cannabis has a light, airy structure, preferably with some perlite mixed in. This ensures adequate drainage and allows roots to grow unhindered. Cannabis won’t do well in soil that is too dense.