Successful germination of indoor plants

Successful germination of indoor plants

Successful germination of houseplants

Germination is one of the most important stages in your indoor cultivation. Successful germination guarantees healthy, vigorous plants. In this article, our team will explain how to optimize germination of your seeds in a controlled environment, using simple techniques and adapted equipment.

Part 1: Understanding the germination process

Germination is the first stage in the life of your plant. It is the biological process by which a seed is transformed into a young shoot. This phenomenon begins when the seed is exposed to favorable conditions: humidity, heat and oxygen. During this phase, the seed absorbs water, triggers a series of chemical reactions and eventually hatches, releasing the root and stem.

Once this stage is underway, the seedlings begin to grow rapidly. The key to success is to reproduce these conditions optimally in an indoor growing space.

Part 2: Choosing the right germination equipment

To promote germination indoors, certain equipment is essential to ensure your success. Here are the main pieces of equipment you need to maximize your chances:

- Germination trays and kits: These keep seeds sheltered and spread them out in a controlled, ideal environment.

- Heating mats: This equipment is essential to guarantee the necessary warmth for the roots of your cuttings. A temperature of between 20 and 25°C is recommended to stimulate germination.

- Non-heated and heated greenhouses: We also offer greenhouses to optimize your germination. These are available in two versions: non-heated and heated (with an integrated heating mat).

- Grow lights: The right grow lights are essential for successful germination. It enables you to compensate for the lack of natural light.

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Equipment for germination

Reusable germination kit with 25 trays Size M - Germie Reusable germination kit with 25 trays Size M - Germie 2
In stock - Last shipment on Monday
Supports for seeds and cuttings

Reusable germination kit with 25 trays Size M - Germie

Germie
KIT-GERMINATION-M-GERMIE
€20.40
Discover our Germie 25-cell Reusable Germination Kit Size L, the ideal tool for starting your indoor garden with ease and durability. The generously sized trays provide optimum space for germinating your favourite seeds, whether they're herbs, flowers or vegetables. Size: 12 cm X 16 cm          Height: 3.6 cm Available in sizes S and L
Tray of 24 germination cubes - Eazy Plug
In stock - Last shipment on Monday
Supports for seeds and cuttings

Tray of 24 germination cubes - Eazy Plug

Eazy Plug
PLATEAU-24-EAZY-PLUG
€7.40
Discover the Eazy Plug Tray of 24 germination cubes, the essential tool for any indoor growing enthusiast. Designed with precision, this tray provides an ideal environment for starting your seeds, ensuring rapid and healthy germination. Eazy Plug cubes are made from a high-quality organic substrate that encourages root development and robust plant growth.
Tray of 24 Root Riot cuttings - Growth Technology Tray of 24 Root Riot cuttings - Growth Technology 2
In stock - Last shipment on Monday
Supports for seeds and cuttings

Tray of 24 Root Riot cuttings - Growth Technology

Growth Technology
PLATEAU-24-BOUCHONS-ROOTRIOT-GROWTH-TECHNOLOGY
€10.90
Give your cuttings the best possible start with Growth Technology's Root Riot Tray of 24 cuttings plugs, a must-have for indoor growing enthusiasts. These cuttings plugs are made from a unique blend of coconut fibre and tree bark, providing an aerated substrate conducive to root development.   Ideal for soil or hydropic cultivation
Heating mat 55x35 cm - 20W - Secret Jardin
In stock - Last shipment on Monday
Heating mats for seedlings and cuttings

Heating mat 55x35 cm - 20W - Secret Jardin

Secret Jardin
TAPIS-CHAUFFANT-20W-SECRET-JARDIN
€24.90
The Secret Jardin 55x35 cm and 20W heating mat is the ideal accessory for promoting the germination and growth of your plants in a controlled environment. This heating mat has been specially designed for indoor gardeners, greenhouses and propagators. Thanks to its compact size of 55x35 cm and its 20W power, this mat is perfectly suited to warming your...
Non-heating greenhouse - 38x25x19 cm - Neptune Hydroponics Non-heating greenhouse - 38x25x19 cm - Neptune Hydroponics 2
In stock - Last shipment on Monday
Greenhouses for seedlings

Non-heating greenhouse - 38x25x19 cm - Neptune Hydroponics

Neptune Hydroponics
SERRE-NON-CHAUFFANTE-NEPTUNE-HYDROPONICS
€9.75
This small, unheated Neptune Hydroponics greenhouse measures 38 x 25 x 19 cm and consists of a tray with a bottom to drain excess water. Its transparent cover has two ventilation openings to control the air supply and humidity needed for germinating seeds and taking cuttings from your indoor crops.
Heating greenhouse 38x24x19 - Neptune Hydroponics
In stock - Last shipment on Monday
Greenhouses for seedlings

Heating greenhouse 38x24x19 - Neptune Hydroponics

Neptune Hydroponics
SERRE-CHAUFFANTE-NEPTUNE-HYDROPONICS
€37.90
Transform your indoor growing space with the Neptune Hydroponics Heated Greenhouse, an innovative solution to ensure optimal conditions for germination and early plant growth. Compact with dimensions of 38x24x19 cm, this heated greenhouse provides a controlled environment that encourages the rapid and healthy development of seedlings.

Part 3: Preparing your substrate and seeds

Substrate is key to successful germination. A good substrate should be light, well aerated and able to retain sufficient water. Mixtures of peat moss, perlite or coco are particularly suitable.

Before planting your seeds, we recommend soaking them in lukewarm water for 12 to 24 hours. This helps activate the germination process by softening the hull and facilitating water absorption.

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Our selection of substrates

Seedmix potting soil in 2.5 L bag - Guano Diffusion
In stock - Last shipment on Monday
Potting soils for seedlings and cuttings

Seedmix potting soil in 2.5 L bag - Guano Diffusion

Guano Diffusion
TERREAU-2,5L-SEEDMIX-GUANO-DIFFUSION
€5.40
Seedmix seedling potting soil in 2.5 litre bags from Guano Diffusion is the ideal potting soil for organic growing. This high-quality formula is a blend of black sphagnum peat moss and white peat moss, specially designed for germination. This potting soil is ideal for use in the baler or for growing in pots.
Seedmix potting soil in 5 litre bag - Guano Diffusion
In stock - Last shipment on Monday
Potting soils for seedlings and cuttings

Seedmix potting soil in 5 litre bag - Guano Diffusion

Guano Diffusion
TERREAU-5L-SEEDMIX-GUANO-DIFFUSION
€6.40
Seedmix seedling potting soil in 5 litre bags from Guano Diffusion is the ideal potting soil for organic growing. This high-quality formula is a blend of black sphagnum peat moss and white peat moss, specially designed for germination. This potting soil is ideal for use in the baler or for growing in pots.

Part 4: Controlling environmental factors

For indoor cultivation, you need to carefully control the environmental factors that influence germination:

- Temperature: Most seeds require a temperature between 20 and 25°C for optimal germination.

- Light: Although seeds don't need light to germinate, exposure to light as soon as the first sprout emerges is beneficial to prevent young plants from withering.

- Humidity: Seeds should be kept constantly moist, but not drowned. Humidity of between 70% and 90% is ideal.

Part 5: Monitoring and caring for young shoots

Once germination is complete and the first shoots are visible, it's crucial to maintain good conditions for growth. At this stage, watering should be moderate, keeping the substrate moist but not over-watered. Light nutrients can also be added, but in small quantities so as not to burn the young roots.

It is also advisable to watch out for any signs of disease or parasites, and act quickly to eradicate them.

Conclusion

Germination in indoor cultivation is a crucial stage that determines the health and vigor of your future plants. By controlling environmental factors and using the right equipment, you give yourself the best chance of succeeding in this delicate phase.

With care and patience, your seeds will quickly develop into robust young plants, ready to grow in your indoor environment.

Frequently asked questions

How long does it take for seeds to germinate indoors?
Germination time varies according to plant species, but generally takes between 3 and 14 days. Factors such as temperature and humidity also influence this time.
How often should I water the seeds during germination?
It's important to maintain constant humidity without excess water. The substrate must be moist, but not soggy. Moderate watering is recommended.
Is it necessary to light the seeds during germination?
Seeds don't need light to germinate, but once the first shoots appear, adequate lighting is essential to prevent plants from wilting.
What's the best substrate for indoor germination?
Light, airy substrates such as peat mixes, perlite or coconut fibre are ideal. They allow good water retention without drowning developing roots.
Should I use a heating mat to promote germination?
A heat mat is recommended if the ambient temperature of your crop is below 20°C. It maintains a stable heat, ideal for stimulating seed germination.
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