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Buying Seeds (continued)
Are you growing fewer, larger plants?
Gardeners who grow taller plants often grow sativas or their hybrids, because they continue to get considerably taller during flowering, some grow indicas and heir hybrids, letting them vegetate to larger plants before initiating flowering. This is true, for both, indoors and outdoors or in greenhouses.
Are you growing many, smaller plants?
Many gardeners employ high density techniques often refered to as "Sea of Green" or "Screen of Green". This technique uses many smaller plants, spaced closely together, to form a continuous canopy of short plants under high density, horizontal lights. Indicas are often used because of their naturally smaller stature, and shorter flowering times. Sativas are also grown in this fashion, however, they are often put directly into a flowering cycle with very little or not time given to a vegetative cycle, this helps to prevent crowding and tall, stretching, growth. The longer flowering sativas often make up for the additional time required, with higher yeilds and stronger cannabis.
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Feminised Cannabis Seeds by Dutch Passion Seed Company, Amsterdam
In November 1998 we introduced our Female Cannabis Seed. We did this after our own experiments showed that from female seed, we acquired all but 100% female off-spring.
In the mean time we are six months further. We have received a lot of feed-back from our customers. The reactions are mostly positive, clients who have successfully produced almost 100% female off-spring. However there have been reactions from customers who found a few hermaphrodites or male plants. Apparently environmental influences affect the sex of the female seeds as well. Because of the fact that Female seeds do not grow into female plants under all circumstances, we changed the name from Female Cannabis Seeds into Feminised Cannabis Seeds.
From literature and from our own findings it appears that the growth of a male or a female plant from seed, except for the predispositioon in the gender chromosomes, also depends on various environmental factors. Not only the origination of entirely male or female plants is partly affected by
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these environmental factors, the number of male and female flowers on a hermaphrodite plant is afffected as well. The environmental factors that influence the sex of the plant (or the flower in the case of hermaphhrodites), are among other things: 1) the quantity of nitrogen and potassium of the seed bed, 2) humidity and moistness of the seed bed, 3) level of temperatures, 4) colour of the light used, 5) length of daylight. Stress, any form of stress, makes that more male individuals will originate from seed. Even the taking of cuttings from female plants may produce male or hermaphrodite cuttings.
To optimmise the result, changes in one or more of the above-mentioned environmental factors for a certain period during growth, may be applied. During this time these environmental factors will deviate froom the standard growing system for maximum harvest and quality, as described in nursery literature. The desired change(s) in the environmental factor(s) are started from the moment that the seedling has three pairs of real leaves (not counting the seed-lobes). This is the momment that male and/or female predisposition in florescence is being formed. After approximately two weeks the standard growing system can be reconverted to.
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