Want to learn how to germinate tomato seeds faster? Try germinating seeds in a paper towel! Here’s how to do it.
Having small gardens at home are always super fun, whether you love cooking with fresh produce or just love gardening. If you are looking to plant some vegetables, one good place to start is by germinating the seeds beforehand. Tomato seeds, for example, germinate really well in paper towels.
Sowing the germinated seeds also help them grow better and in larger numbers. So, if you are interested in growing your own tomato plants, read ahead to learn how to germinate the seeds in paper towels!
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Germinating Seeds: FAQ
I put together a quick FAQ on germinating seeds. This is super basic and it’s worth checking out some of the resources I linked. It’s really helpful to read the seed packet or details online for different types of seeds to learn more about them. Every type of seed is different and may have different requirements to grow.
Germination is the process of a seed becoming a seedling. Seeds are dormant when you purchase them (or when you harvest, clean, and dry them). The “seed” as we see it is simply a protective coat over the tiny plant. Inside the seed is the beginnings of your plant: it has everything the plant needs to grow roots, stems, shoots, and leaves.
Learn more about what is inside a seed. Here is more scientific and detailed information on germination.
It depends. While some seeds need light to germinate, many do not. The plant itself is what needs light to grow. Prior to emerging, many seeds are buried under the soil, in the dark, when they first emerge. For some seeds, light can be detrimental to the germination process. It’s important to read up on the plant before growing from seed, and to follow the instructions on the label closely.
For tomatoes, the seeds do not need light to germinate, although seedlings need plenty of light to grow into healthy, productive plants.
Seeds need three things to germinate: water, oxygen, and the correct temperature. Some seeds need soil while others do not. pH can also impact germination.
The soil temperature is what triggers the process of germination to begin. It’s a message from the Earth to tell the seeds that Spring has arrived and that it’s time to grow. Usually the soil temperature takes a while to warm up so one or two days of odd warm weather in the winter won’t trigger germination. The seeds need consistent warm soil in order to begin this process.
Different seeds need different temperature soils to begin germination. It’s fascinating to see how different seeds germinate sooner than others. We did an experiment many years ago to determine the impact of using a heat mat for starting seeds; some plants germinated and grew much faster with the use of the heat mat while others did not.
Plants like tomatoes like warmer weather while cold tolerant plants like lettuce and broccoli can be started sooner and germinate in cooler soil.
There are two types of germination: Epigeal Germination and Hypogeal Germination. In epigeal germination, the cotyledons rise above the soil, while in hypogeal germination the cotyledons remain below soil. The cotyledon is the seed leaf.
Tomatoes undergo epigeal germination.
The main reason you may want to germinate seeds on a paper towel is to keep an eye on your seed germination rates. Soil isn’t a sterile environment (aka there are germs and bugs in it) so there are other factors that can impact whether or not you ever see a seedling pop up. If you start your seeds on a paper towel, provided you care for the seeds properly, you can calculate what percentage of your seeds are “good.” You also don’t end up wasting soil or pots on seeds that will never germinate.
There are several things that can cause your seeds not to germinate.
Too little/Too much water
Too cold/Too hot
Not enough oxygen
Seeds are too old
Seeds were stored incorrectly (aging them faster)
How to Start Seeds on Paper Towels
In this case, we’re going to be talking about germinating tomatoes on paper towels.
Here is what you will need:
- Paper towels
- Water in a spray bottle
- Plastic zip lock bag (medium or large size)
- Tomato seeds
Collect the seeds from a tomato and clean them as well as you can. You could also buy tomato seeds and use them for this process instead. Feel free to use whatever is more accessible to you.
Take a paper towel and fold it in half.
Fill the spray bottle with water and use it to spray water onto both sides of the folded paper towel. Spray the water in such a way that the entire paper towel becomes damp but is not dripping with water.
One by one, place the tomato seeds onto one side of this piece of paper towel, making sure that none of the seeds are overlapping. If you have more seeds, repeat the process with more paper towels.
Take the spray bottle again and lightly spray onto each of the seeds that are laid. One or two spritz for each seed should be enough.
Starting from one side, loosely roll the paper towel, making sure the side with the seeds is on the inside. Be careful not to make the roll too narrow or tight as that might make it difficult to open later.
Open the plastic zip lock back and spray the inside lightly with water. Although this is not necessary, it is highly recommended as long as you’re not using too much water.
Place the rolled-up paper towel inside the zip lock bag and seal the bag.
Place this bag near any heat source, like the back of a refrigerator.
Unroll the paper towel once a day to check if any of the seeds have germinated or not. Then roll it again and place it back inside the bag, near the heat source.
The germination period could be as little as two days or as long as two weeks. Checking daily lets you know how long this set of seeds are taking to germinate.
When the main root comes out, remove the seeds, with the roots attached, from the paper towel and plant them.
The longer the root grows, the higher is the chance of it breaking into the paper towel which might cause it to detach from the seeds while removing. So, make sure to pick the germinated seeds out at the proper time and plant them into soil right away.
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