Water level significantly affected seed germination and seedling establishment. The wet soil treatment germination rate (83%) was much higher than the waterlogged (56%) and submerged (44%) treatments. The wet treatment group had greater seedling establishment (94%) than the waterlogged treatment (84%).

As a generalisation, light in the red wave length usually promotes germination whereas blue light inhibits it. In such a case with a seed which required darkness, uncovered seed, which is exposed to light will not germinate. Sometimes only part of the seed is light sensitive.

One easy way to make seeds germinate faster is to presoak them for 24 hours in a shallow container filled with hot tap water. Water will penetrate the seed coat and cause the embryos inside to plump up. Don’t soak them for longer than 24 hours because they could rot. Plant the seeds immediately in moist soil.

Too much water can rot seeds before they get to grow. If you give soil too much water, the water fills in all of the air pockets in the soil. This means that your plant’s roots can’t breathe and get stressed. They may rot as well.

Do you water seeds every day? Yes, seeds normally need to be watered at least once per day to keep the soil moist, not permitting it to dry out. In especially warm climates (or depending on your soil or garden setup), you may need to water more than once per day.

Too much water: As mentioned above, seeds can rot away from being too wet. Establish a watering schedule for seeds until they germinate, usually once or twice a day. Once seeds are sprouted, cut back slightly on watering to avoid damping off. Damping off is when sprouted seeds flop and die back from being too wet.

Along with nutrients and moisture, seeds need some oxygen for healthy seedling growth. Overwatering seeds prevents healthy oxygen levels around seeds, which may then fail to sprout, notes Iowa State University Extension.

4 Signs You are Overwatering Your Plants

1. The tip of this plant’s leaf is brown, but it feels soft and limp due to overwatering. Roots are Critical to Plant Life.
2. Leaves Turn Brown and Wilt. When plants have too little water, leaves turn brown and wilt.
3. Water Pressure Begins to Build.
4. Stunted Slow Growth.

If you happen to have both yellowing leaves and new growth falling from your plant, there is a good chance you are overwatering. Try to remember to water your plants only when the soil is dry. Not only does the plant show signs of overwatering in its leaves and flowers, but the roots can also be an indication.

In general, ten minutes of watering per session (morning and evening) will provide enough water to keep the top couple inches of soil moist. As your new grass seed grows and flourishes, you can water deeper and less frequently – this will encourage established grass roots to extend deeply into the soil.

Another option is to tuck seeds directly into soil outdoors. Planting seeds this way is called direct sowing, and it is an easy process that yields great results. Even so, many vegetables, annuals, herbs and perennials sprout easily from seed sown directly into garden soil.

In general, seedlings should receive roughly 14 to 16 hours of light a day when situated in a south-facing window. This can be very difficult to achieve, and most growers opt to use artificial lights for their seedlings. These fluorescent lights should be left on for 12 to 16 hours a day.

12 to 16 hours

To put it bluntly, yes, too much light can eventually kill your plant. The light intensity can produces increasingly severe damage to your plant to the point where it dies. It can also dry out the plant to the point where it no longer has the water it needs for growth and photosynthesis.

Usually we harden off young plants to the cold, but you should also take care not to burn a seedling that has grown in a greenhouse, never exposed to the sun’s full fury. Even “full sun” plants get sunburn if they are not used to the sunshine.