Bigger seeds make bigger plants

Tips and advice for growing seeds

Tips and advice for growing seeds


Encyclopedia of fertilizing



Tips and advice for growing seeds

Perhaps one of the most beautiful tasks in plant cultivation is certainly the setting of the seeds. Unfortunately, seed planting is not always successful. Occasionally, despite our careful selection and control, our seeds will not sprout. This can include seedlings that are not viable, that the seeds are too old or too poorly preserved. We'd like to give you some basic tips and advice on how to grow seeds to turn your seed into a beautiful plant.

earth: When sowing, make sure that you do not use normal potting soil. This contains too many fertilizer salts and can cause the seeds to rot because the salts leach out the seeds. Even if a plant should have sprouted, it is possible that the fertilizer salts leach out the roots. Therefore, only use nutrient-poor, water-permeable and fine soil substrate such as special potting soil or coconut fiber for cultivation

soaking: Always soak hard-shell seeds before sowing.

earth: In most cases it is necessary to cover the seeds. However, do not cover the seeds with too much soil.

- Recommended thickness for covering: 1 - 1.5 times the size of the seeds
- Squeeze gently so that no bubbles remain around the seeds.

irrigation: Make sure that you always keep the sowing vessel evenly moist and do not let it dry out. Use water with little lime. This includes e.g. rainwater.

temperature: Ensure that germination temperatures are even and, if necessary, high (22 ° to 28 ° Celsius).

ventilation: Make sure that the sowing vessel is repeatedly ventilated or provided with ventilation holes. Small greenhouses are ideal.

distance: Leave 1 to 2 cm between the seeds so that the young plants do not interfere with each other.

Repot: Do not repot the plants until the roots are strong enough, otherwise the roots can break. This is mostly when the seedlings are about 10 cm high

Rooting aid: If the plant is growing too slowly, you can use a rooting aid. The plants grow faster and become more robust.

Fertilize: In order for the plants to thrive healthily and vigorously, it is best to use fertilizers that are different for the plant.

Prick out (Transplanting): The time to prick out seedlings (transplanting) is reached when the seedlings are cramped and the necessary light is no longer available for them. The seedlings should be lifted out very carefully so that not too many of the fine hair roots are torn off. These roots absorb water and nutrients. In order to be able to continue to grow, the plants must first form new hair roots in the new pot or at the new location. This process takes about a week. This gives the parts of the plant (stems / leaves) more space to spread out. The plants then grow more compact and vigorous. The root system can branch out more and thus absorb more water and nutrients. This means that the plants get bigger and stronger. For transplanting, special pricking soil should be used, which is lightly fertilized and thus stimulates the roots to branch out more strongly. It is important that the plant forms many roots and forms a root ball so that it can draw enough water and nutrients. It must be noted that the life of the plant is in the roots and that the main roots must not be damaged during transplanting. Seedlings cannot recover from such an injury.

Important: After pricking out, water the plants well and protect them from the sun and drafts.

Top of page



Classic sowing problems

1. Desiccation of the earth. The seedlings die.

2. Waterlogging during the germination period, the soil becomes encrusted and leads to a lack of oxygen in the plant.

3. The seed is not covered with soil (unless this is expressly stated in the growing instructions). Dark germs then do not germinate.

Classic seedling problems

1. After the first transplant, the plants with the cotyledons must be 1 to 2 cm above the ground. If they are set too deep, there is a risk that they will rot. If they are set too high, they can fall over due to the insufficient stability

2. Protection from drafts is important.

3. Seeds that are too densely sown can cause plants to fall over. The roots of the plants can interfere with each other. The factors soil warmth, moist soil and high humidity were so ideal. You can prevent this by keeping the soil a little drier after germination, ventilating the container from time to time or using a means to strengthen the roots.

Ailing plants

Brown leaves?

This is often a sign of nutritional deficiency. Iron fertilizer is best in this case. If the plant is still in the potting soil, it should be moved because the potting soil is not fertilized.

Mold in the potting soil in the greenhouse?

If the potting soil is moldy in the greenhouse, you should ventilate well. You should completely remove the greenhouse lid for an hour every 3 to 4 days.

Are you having problems with maggots in the ground eating away at your seeds?

If you have maggots in the soil, it's probably not because of the potting soil or the coconut fiber, as these are almost always completely pest-free. It could be transmission from other nearby plants. It is recommended to dispose of the plant and start over. By the way, yellow stickers do not help against maggots.

Do you have problems with small whiteflies?

One possibility could be that the air is too dry. You should regularly spray the plants with decalcified water. The flies may also be from other plants in the apartment that were already infested and have now also laid their eggs there

Tropical seeds

Best season for cultivation?

In principle, all seeds can be grown all year round. The lower light conditions in winter only lead to a slightly longer germination period. Artificial light is not necessary. Note the drier air caused by the heating in the winter months and ensure sufficient moisture by lightly spraying the seedlings or preferably through a greenhouse.

How do I achieve the often necessary germination temperatures of over 20 ° Celsius?

In order to reach a germination temperature of 20 ° Celsius and more, you should try it with a greenhouse at a bright window. However, you must avoid direct sunlight on all seedlings for up to three months of age. The temperature increases by itself in the closed indoor greenhouse. For those who do not have a greenhouse, there is a very simple alternative: see the instructions for a greenhouse.

Crafting instructions for an indoor greenhouse:

You need: 1 flat yogurt pot potting soil transparent household foil 1 scissors water

In a flat yogurt cup (5 - 8 cm high) cut 2 small holes in the bottom - so that excess water can run off - and fill the cup with potting soil. Now prepare the seeds according to our growing instructions and place them in the soil. Then water the soil well and cover the cup with transparent household foil, in which you also cut some holes - for the air supply.

Important: Ventilate the foil for one hour every three days so that the earth does not go moldy and make sure that the earth is always moist, but not wet. Do not remove the foil until the seedlings are growing and transfer the seedlings from a height of 10 cm to normal potting soil.

Shelf life of the seed?

On average, most seeds have a shelf life of at least 9 to 24 months. Over time, seeds 'only' generally lose their ability to germinate, so that not as many plants can be obtained from one serving as directly after purchase.

Brown spotted leaves on young plants?

Brown leaves can be quite normal in the young plant stage and usually appear in the second year. Less watering can be a preventative measure. Every 7 to 10 days only.

The seeds do not germinate or become moldy

To prevent seeds from sprouting or going moldy, be sure to use potting soil or coconut fiber. Bonsai soil, orchid soil, tablet soil for swelling are not suitable. It is also important not to let the soil dry out, but also not to keep it too moist.

Sow all or part of the seeds?

Ideally, it would always be sowing all the seeds in a bag at once, as it makes little sense to first sow a little and then later again the rest.

Repotting the seedlings?

Seedlings should have reached a height of about 10-15 cm before you carefully loosen the soil (for example with a spoon handle) so as not to damage the fine roots. The seedlings should be moved individually into slightly larger pots with normal potting soil.

For growing potting soil or potting soil?

Normal potting soil is not suitable because it is fertilized and not germ-free and not very air-permeable. You should always use potting soil. You should also not use fertilizer, as contrary to popular belief, fertilizer is only harmful for cultivation. The seed already has enough fertilizer in its shell. Cultivation soil is not fertilized, germ-free and very air-permeable. In this way you can prevent the seeds and seedlings from becoming moldy.

Wintering of the young plants

It is important that you make these draft-free, that is, not on the open window. A location that is as bright as possible should be preferred. If you should place the young plant in one location on a window sill above the heater, you will have to spray the plants with water more often because of the dry heating air (also applies to older plants).

Repot young plants. When?

From a height of 10-15 cm, seedlings should be repotted from the potting soil into normal potting soil. You should repot palms every two to three years and flowering plants once a year. It is best to repot in spring or autumn and not in December or January.

Top of page


The encyclopedia of fertilizing

Fertilizing, i.e. supplying the plant with nutrients, is extremely important. The plant can stock up on all the essential substances and thrive so magnificently. Here is a brief list of the ingredients contained in the fertilizers:

Nitrogen (N):

Nitrogen promotes the development of shoots and leaves. It builds up protein. If there is a lack of nitrogen, the leaves turn yellow and the plant grows poorly.

Phosphoric acid (P2O2):

It ensures good root growth and promotes flower formation.

Potash (K2O):

Through the formation of sugar, it ensures firm cell walls and thus increases the resistance to pests, diseases and frost.

Lime (CaO):

Lime can neutralize excess acid.

Iron (Fe) & Magnesium (Mg):

They are a very important part of leafy green and promote the build-up of starch and sugar.


The micronutrients consist of around 10 trace elements such as copper, boron, zinc, manganese and others. If a plant lacks these trace elements, deficiency symptoms and diseases occur.



The addition of fertilizer can prevent the symptoms of deficiency and ensure that the plants do not suffer from diseases.