, 18, 720
(1975) and references cited therein
Old Chilam Mahadev feminizedsensiseedbank
own is called
‘The couch-lock effect’. The head high is simply called ‘The head
Now another thing must be considered here. Remember that
we talked about Species of Cannabis - Sativa, Indica and Rudereralis?
Well Rudereralis is hardly used much today. Sativa and Indica are
extremely common and these 2 species will be the main focus of this
book. Also both species have two different forms of high. The high
type of each species can also be controlled depending on the time at
which you harvest. Not only this but the species can be crossed to
produce Indica/Sativa type plants or Sativa/Indica type plants. This
may sound all very confusing at first, but it is in fact all quite simple.
We will explain more about this in our next chapter.
Figure 2.1 - Some cannabis seeds by Kryptonite.
At the moment there are approximately 450 seed varieties of
Cannabis on the market today. Out of the 450 seed varieties, 200 are
worth looking at and out of the 200 varieties about 50 or so are
outstanding. Each strain is either a pure species type (taking 2 plants
of the same species and crossing them) or a crossbreed of two or more
species (taking 2 plants from different species and crossing them).
Out of the 450 seed varieties we said that 200 where good.
This leaves 250 left. Those 250 are usually very unstable crossbreed
strains. These complete hybrids plants are mixed so much that they
can not be classified at either Sativa or Indica. They are classified in a
different way and we will explain this in the strain format table below.
Most hybrids do not last long on the market and are primarily
found only among breeders who are experimenting with their plant’s
genetics. Seed producers tend to only produce the following strain
categories. Some Hybrids can be excellent though!
PURE SATIVA (This is a pure species)
SATIVA (This is a mostly Sativa species with some Indica)
PURE INDICA (This is a pure species)
INDICA (This is a mostly Indica species with some Sativa)
INDICA/SATIVA (This is a 50/50 cross between a Sativa and an
They also produce:
RUDERALIS (This is a pure species)
And some other Ruderalis mixes. However Ruderalis is a
problematic plant. It does not produce large quantities of THC, nor
does it flower like the other varieties. Ruderalis is considered substandard
by most growers because it flowers according to age and does
not flower according to the photoperiod. We will explain what the
photoperiod is in a moment.
Now remember that we said an Indica/Sativa cross would
produce two different highs. Well we lied a little. If they are both
50%/50% crosses then the high will be a 50%/50% mix. Indica/Sativa
and Sativa/Indica is really the same thing.
Pure Sativa is a total ‘Head High’. Pure Indica is a total ‘Body
Stone/couch-lock’. A 50/50 cross will give a 50% ‘Head high’ and a
50% ‘Body Stone’. If an Indica plant is crossed slightly with a Sativa
plant it will giv
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