If there’s no germination at all…
I’ve found that if the grow space feels cool to you, it also feels cool to your plant most likely, and it may not be growing to its full potential. Some Sativa strains are particularly sensitive to the cold, though some Indica strains from cold climates will still thrive at lower temps.
Autopsy: Why Aren’t My Seeds Sprouting?
There’s good reason to believe that hydro plants would grow better with a cool reservoir. For example, the bad microorganisms that make root rot don’t survive well at lower temperatures. Additionally, water can physically hold more oxygen at lower temperatures, which seems like it would be great for faster plant growth. Because of this, lots of growers will AC their room to 60°F, and/or get a water chiller to cool their water reservoir to a similar temperature.
I do agree that if the temperature is above 80°F, your plant is a lot more likely to get root rot. However, I personally have not found that cool temperatures are adequate to prevent root rot. Even if the temperature is 60°F, you still need lots of bubbles and a “good bacteria” supplement like Hydroguard to prevent root rot in many cases.
I’ve seen several growers buy a water chiller and still get root rot. So I personally don’t believe cold temperatures are the best way to go to keep roots healthy.
The Rapid Rooter in this picture is a little too wet, which makes the seedling prone to “damping off.” If you ever notice the Rapid Rooter actually looks wet or shiny, it’s too much water. Try turning the top-feed off every few hours, or hand-watering the seedling at first. Too much moisture can kill!
Now that your seedling in in the tank, it’s time to learn how to….
2.) Germination for Hydroponics
Don’t use a humidity dome on seedlings unless it’s very dry where you live. If you do use a dome, consider keeping a vent open and watching the humidity. A young seedling doesn’t require high humidity, and they tend to get “wet feet” and stop growing in constantly wet conditions.
How to Germinate Cannabis Seeds in Hydro We have a cannabis seedling germination page which has everything you need to know about all the different germination methods, but this tutorial is
Before feminised seeds, ‘regular’ cannabis seeds were used which produced approximately 50% male and 50% female plants. This meant that growers had to germinate and grow twice the desired number seedlings in order to reach a satisfactory number of mature females. With the arrival of feminised marijuhana seeds a grower simply plants the desired number of seeds and forgets about the inconvenience of male plants. Male plants not only waste space in a garden, they also risk reducing the finest sensimilla into seed pods. For most growers of recreational or medical marijuana the male plant is simply no longer wanted. The recent boom in home-grown cannabis has been made a lot easier with the arrival of feminised marijuana seeds. No more worrying about how to identify male plants.
It is important to start these changes at the three-pairs-of-leaves stage and continue for two or three weeks, before reverting to standard conditions.
Dutch Passion invented feminised marijuana seeds and have perhaps the worlds best selection of top quality feminised strains. If you are thinking about buying some feminised seeds then first take a look at what Dutch Passion has to offer – you won’t be disappointed!
In a Dutch Passion experiment done in 1999 Dutch Passion grew 15 varieties of “feminized” seeds. We started with 30 seeds per variety. The goals were: 1) to determine the percentages of female, male, and hermaphroditic plants. 2) to compare the uniformity (homogeneity) among plants from “feminized” seeds with those grown from “regular” seeds.
From literature and our own findings it appears that the growth of a male or female plant from seed, except for the predisposition in the gender chromosomes, also depends on various environmental factors. The environmental factors that influence gender are:
1. The results were excellent. Nine out of fifteen varieties had 100% female offspring. Percentages of female plants from the other 6 varieties were between 80 and 90%. These plants were all hermaphrodites, producing their male flowers at the end of their lifecycle. Seed-setting hardly took place. No males were found.
As an additional benefit the feminised marijuana seeds tend to give rise to more uniform plants than regular seed. For the experienced growers feminised seeds have simplified life. To the new grower, feminised cannabis seeds are the only way to go. Growing top quality strains of cannabis has never been as easy, just choose the strain, plant the seeds and ensure ample light and sufficient nutrients.
2. Approximately 70% of the plants of varieties grown from “feminized” seeds were far more uniform than plants grown from “regular” seeds of the same variety. About 20% of the varieties were a little more uniform, while in 10% of the varieties no difference in uniformity was seen.
Feminised marijuana seeds are grown in the same way as regular seeds. They can be grown indoors, in greenhouses or outside. They can be grown in soil or hydroponic systems. Feminised seeds give more stable results than regular seeds, resulting in better potency for 80% of all varieties.
What are feminised seeds? Dutch Passion created feminized cannabis seeds Feminised cannabis seeds have been one of the most important contributions to the cannabis growing movement in the