Maximum Yield USA 2012 March | Page 94

IT starts with a Seed “ Gemination starts with the reintroduction of moisture to the seed and finishes when the plant ends its reliance on its food stores and can begin to draw nutrition from the environment. To help the tiny plants inside seeds stay in a state of suspended animation, excess moisture should be allowed to evaporate as the seeds dry out. Depending on the type of plant and the conditions, the seeds might last through the winter months to sprout in the spring, or they might last for several years, awaiting conditions that will allow them to sprout. Seeds kept too wet might sprout prematurely and then die, so seeds should be stored in a dry container at cool tem- 92 Maximum Yield USA | March 2012 peratures for best results. Germination starts with the reintroduction of moisture to the seed and finishes when the plant ends its reliance on its food stores and can begin to draw nutrition from the environment. In nature this is one of the most vulnerable times for a plant— which is why so many seeds are generated by parent plants in order to ensure at least a small number of surviving plants in the next generation. The requirements for germination are moisture, oxygen, an appropriate temperature and—for some plants—light. The seeds of most plants have a low moisture content, which helps give them a long ‘shelf life.’ Before a seed will sprout, it must first be rehydrated. When ” the seed comes into contact with moisture, it draws in the water through a small hole, or micropyle. This moisture will cause the plant to swell and will soften the seed coat, allowing the radicle to break through and seek more moisture. The seed leaves will also begin to swell and will open to seek out light. To help with getting moisture through the micropyle, some gardeners will soak seeds in water for 24 hours. Scarification practices such as nicking the seed coats with a sharp object or rubbing the seeds on sandpaper or an emery board are also sometimes used to help weaken the seed coat and allow the plant easier access to moisture. Moistening a paper towel, wringing it out and putting it with seeds in a plastic bag in a warm location to sprout is another way of getting moisture to saturate your seeds. If you’re using this method you should change the paper towel every few days to