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do you need light to germinate weed seeds

Do you need light to germinate weed seeds
Maintain an ambient temperature of at least 20 °C, otherwise, the seeds will not or at least not optimally germinate. Put the cannabis seeds on a surface that holds moisture, like wadding, paper towel or tissues on a saucer. Moisten the surface well, but avoid making it too wet. The moisture evaporates quickly at room temperature, so check during the period that the seeds will germinate if the surface is still damp enough. You can also cover the seeds with damp wadding or tissues and another saucer on top. Because of the moisture that gets into the seeds, they are activated and start to germinate. As soon as the germ is 2 to 3 mm, you can carefully get the seeds out of the water and plant them in the soil. Put them 0.5 to 1 cm in the soil with the root down. This way, the root will more easily grow downwards.

Germination

You bought beautiful Premium Pro Seeds from Suzy Seeds and of course, you want to get started. First, you have to germinate the seeds. Below, I will discuss my favorite way extensively, but also suggest other good methods. Suzy Seeds exclusively sells feminized cannabis seeds, so you don’t need to remove male plants. It’s good to know that a cannabis seed does not need light to germinate. What is important, though, is a humid environment and an ambient temperature of around 20 °C. In general, there are three ways to germinate cannabis seeds: – In a cup of water – On a damp surface – In soil My favorite way to germinate the seeds is to put them in a cup of water and then between a damp paper towel. This goes well in 99% of the cases. That is why I will more extensively describe this first way.

We recommend not to touch the seeds with your hands. If you do anyways, make sure your hands are clean and if possible use plastic gloves.

Suzy’s favourite germinating procedure

Maintain an ambient temperature between 20 and 25 °C, otherwise, the seeds will not or at least not optimally germinate. Fill a cup with water and put the cannabis seeds in it. Get the seeds out of the water after 12 to 24 hours and spread them on a plate between two layers of damp paper towel. Put the plate in a dark and enclosed place. It’s important to make sure that the paper towel remains damp. I moisten the paper towel every 6 to 12 hours. Do not use too much water. The seeds only need to be damp. Within 48 to 72 hours, the seeds should pop open. But be patient, because it can take longer (6 days at the most). When the root becomes visible, you need to plant the seeds. If you do not plant them in due time, the root can be damaged.

Suzy’s Tip: Try your germinating method on a couple of seeds (maximum 3). This way, you can test if your method works well. Often a wrong germinating method is used and the seeds don’t germinate. Do you want to germinate your seeds in a different way? Continue reading.

Germinating cannabis seeds in a cup of water

Maintain an ambient temperature of at least 20 °C, otherwise, the seeds will not or at least not optimally germinate. Fill a cup with water and put the cannabis seeds in it. After 3 to 5 days, the seeds should pop open and a tiny root should come out. As soon as the sprout is 2 to 3 mm, you can carefully get the seeds out of the water and plant them in the soil. Put them 0.5 to 1 cm in the soil with the root down. This way, the root will more easily grow downwards.

Germinating cannabis seeds on a damp surface

Maintain an ambient temperature of at least 20 °C, otherwise, the seeds will not or at least not optimally germinate. Put the cannabis seeds on a surface that holds moisture, like wadding, paper towel or tissues on a saucer. Moisten the surface well, but avoid making it too wet. The moisture evaporates quickly at room temperature, so check during the period that the seeds will germinate if the surface is still damp enough. You can also cover the seeds with damp wadding or tissues and another saucer on top. Because of the moisture that gets into the seeds, they are activated and start to germinate. As soon as the germ is 2 to 3 mm, you can carefully get the seeds out of the water and plant them in the soil. Put them 0.5 to 1 cm in the soil with the root down. This way, the root will more easily grow downwards.

Germinating cannabis seeds in soil/compost

Direct germination of cannabis seeds in the soil is a commonly used method. You don’t have to handle the fragile plant, so it is not disturbed in its growth process. However, the chances that the seeds will germinate are lower than when applying the other methods. When using this method, it is important to use good soil. You can inform yourself about the different types of soil at your local grow shop. Maintain an ambient temperature of at least 20 °C, otherwise, the seeds will not or not optimally germinate. Put the cannabis seed about 1 cm deep in the soil. Cover the hole with some soil and gently press. The soil needs to be light so that the plant can easily grow to the surface. Solid soil is hard to penetrate for the roots and will cause a delay. The seeds will germinate under the ground and will come to the surface after 4 to 10 days.

  • – Be patient, the time it takes to germinate may differ according to the strain.
  • – Make sure that your hands are clean when you touch the seeds.
  • – If you spread the seeds on wadding or tissues, moisten the surface well and keep it moist until the seeds start germinating.


Do you need light to germinate weed seeds
The light requirements for seeds vary widely. Some seeds need light to germinate. Other seeds will germinate only in darkness. Still others seem to have no preference and will germinate in either light or darkness if their temperature and moisture requirements are met. Some seeds — meadow sage (Salvia pratensis) and tufted saxifrage (Saxifraga caespitosa), for example — require light to germinate if you attempt to grow the seeds immediately after harvesting them. If you hold the seeds over the winter, however, they loose the light requirement and will germinate in darkness.

Do Seedlings Need Light Before They Sprout?

Some sunflower seeds need light to germinate.

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Seeds, when they come to us in seed packages, are dormant. For a plant to grow from the seed, that dormancy has to be broken. Some seeds break dormancy when their seeds get wet. Some require that fire or pressure break their husk. Others require light.

Light Versus Dark

The light requirements for seeds vary widely. Some seeds need light to germinate. Other seeds will germinate only in darkness. Still others seem to have no preference and will germinate in either light or darkness if their temperature and moisture requirements are met. Some seeds — meadow sage (Salvia pratensis) and tufted saxifrage (Saxifraga caespitosa), for example — require light to germinate if you attempt to grow the seeds immediately after harvesting them. If you hold the seeds over the winter, however, they loose the light requirement and will germinate in darkness.

The Mechanism

A seed’s need for light is tied to a pigment called phytochrome, which exists inside most plants. Photochrome reacts chemically to light. This pigment is involved in plants growing upward to seek light. It is what determines that plants that grow in low light get longer and more spindly than plants grown in enough light. When light hits light-sensitive seeds, the photochrome inside the seeds reacts, causing the seed to break dormancy and sprout.

Seeds that Need Light

According to Norman C. Deno, author of “Seed Germination: Theory and Practice,” swamp plants typically need light to germinate. Woodland seeds also often need light as do many weed seeds. That’s why when you cultivate to get rid of weeds, others pop up as soon as they receive enough light to grow. Vegetable seeds that need light to germinate include dill (Anethum graveolens), lettuce (Lactuca sativa) and some peppers (Capsicum annuum). Coleus (Solenostemon scutellarioides), snapdragon (Antirrhinum majus) and Shasta daisy (Leucanthemum Leucanthemum x superbum) are among the flower varieties that need light to germinate.

Planting Seeds That Need Light

The general rule of thumb is to plant a seed no deeper than its length. Seeds that need light to germinate must be planted shallower than this, however. One method is to sow the seeds over the surface of the soil. Using your hand or the back of a trowel, gently press the seeds into the soil so the tops of the seeds remain uncovered. If the seeds are tiny enough that they are likely to blow away, you can sow them on the surface of the soil, sift a fine layer of compost over the top and water the compost. Doing so will hold the seeds in place while allowing light to penetrate.