Greenhouse: Everything you need to know!

Having your own greenhouse in the garden is the ultimate dream for many hobby gardeners. Not only does it provide a protected space for plants, but it also ensures a bountiful harvest regardless of weather conditions. But what exactly is a greenhouse? What is it used for? In this blog post, you'll learn everything you need to know – from the advantages and disadvantages to materials like greenhouse film, the question of which glass is suitable, and how to build a greenhouse yourself.

What is a greenhouse and what is it used for?

A greenhouse is a structured structure, usually covered with transparent materials such as glass or film. Its purpose is to create a protected and controlled microclimate for your plants. The temperature, humidity, and light levels inside can be optimally adjusted to the plants' needs.

With a greenhouse you can:

• Sensitive Protect plants : The greenhouse protects your plants from frost, wind, heavy rain or hail.
• Extend the growing season : Start sowing in spring and harvest until autumn.
• Cultivating exotic plants : Tropical or Mediterranean plants thrive particularly well in the protected environment.
• Achieve higher yields : The ideal climate allows your plants to grow faster and produce more yields.

Advantages and disadvantages of a greenhouse

Advantages:

• Optimal protection : Plants are protected from weather conditions and pests.
• Controlled climate : Temperature and humidity can be regulated.
• Versatile use : Whether vegetables, flowers or tropical plants – a greenhouse can be used universally.
• Increased yield : Plants grow faster and produce richer harvests.

Disadvantages:

• Cost : A greenhouse made of glass or polycarbonate can be expensive.
• Maintenance : Regular ventilation, cleaning and pest control are necessary.
• Space requirements : Depending on its size, a greenhouse takes up a lot of space in the garden.

Types of greenhouses

There are various materials greenhouses can be made of. Each material has its own advantages and disadvantages. Here are the main types:

• Glass: A classic material that offers maximum light transmission. Ideal for demanding plants, but more expensive and heavier.
• Polycarbonate: More shatter-resistant and lighter than glass. It offers good insulation but is less transparent.
• Plexiglass: A cheaper alternative to glass with good light transmission and stability.
• Polytunnel greenhouse: Flexible, cost-effective and easy to handle, but shorter lifespan compared to rigid materials.
• Metal frame with polyethylene coating: Robust and durable, often used for larger greenhouses.

The choice of material depends on your budget, the needs of your plants and the desired lifespan of the greenhouse.

Greenhouse film: A good alternative?

A popular and more cost-effective alternative to the traditional glass greenhouse is a film greenhouse. This special greenhouse film is translucent, UV-resistant, and often tear-resistant. It's ideal if you want to build a greenhouse yourself.

Is greenhouse film good?

Yes, greenhouse film is a good choice, especially for home gardeners who want flexibility. It's easy to handle, affordable, and still offers good protection for your plants. However, its lifespan (approximately 2-5 years) is shorter than that of glass or polycarbonate.

Which glass for greenhouse?

If you choose a glass greenhouse, you should consider the following types of glass:

• Tempered safety glass : Particularly robust and shatter-proof.
• Horticulture glass : Transparent and specially designed for horticulture.
• Frosted glass : Diffuses the light evenly but prevents direct sunlight.

Is glass better for a greenhouse?

Glass offers an aesthetically pleasing appearance and high durability for the greenhouse. It also ensures maximum light transmission. However, glass is more expensive and heavier than greenhouse film and requires a more stable construction.

Build your own greenhouse: With greenhouse film

Building a greenhouse with greenhouse film is a cost-effective and easy way to protect your plants. Here's a step-by-step guide for your film greenhouse:

Materials:

• Greenhouse film : UV-resistant and translucent.
• Wood or metal rods: For the scaffolding.
• Cords, cable ties or foil tape : For attaching the film.
• Shovel: For anchoring the structure.
• Stones or ground anchors : For weighing down the edges of the film.

Step-by-step instructions:

1. Select location: Choose a sunny, sheltered spot in your garden for your greenhouse. The ground should be level.
2. Build scaffolding: Build a sturdy structure from wooden or metal poles. The size depends on your space requirements—a small greenhouse is particularly suitable for smaller gardens.
3. Attaching greenhouse film: Stretch the film over the scaffolding and secure it with string, film tape, or cable ties. Make sure the film is taut to prevent it from flapping in windy conditions.
4. Back up pages: Dig the edges of the film slightly into the ground, weigh them down with stones or secure them with ground anchors to prevent them from slipping.
5. Plan ventilation: Leave the possibility to open the film at the front and back to ensure good air circulation.

Heating in the greenhouse: When is it necessary?

Heating a greenhouse can be crucial, especially if you want to cultivate plants or overwinter potted plants during the colder months. A heater ensures that your plants are protected from frost in low outdoor temperatures and have optimal growing conditions.

When do you need heating in the greenhouse?

• Frost protection: In regions with harsh winters, heating is necessary to protect sensitive plants from frost damage.
• Year-round cultivation: If you want to grow vegetables, herbs or exotic plants all year round, a constant temperature is essential.
• Growing young plants: Young plants are particularly sensitive to temperature and benefit from a heated environment.
• Tropical or Mediterranean plants: These plant species also require higher temperatures in winter to thrive.

Heating methods for the greenhouse

• Electric heaters: Easy to install and ideal for smaller greenhouses. Thermostats allow for precise temperature control.
• Gas heaters: Particularly powerful and efficient for larger greenhouses. However, they require good ventilation.
• Paraffin ovens: A cost-effective option that is well suited for home gardeners, but requires manual control.
• Solar heating: Environmentally friendly, but dependent on sunlight. Suitable for transitional seasons.

Tips for efficient heating

• Insulation: Use double greenhouse film or insulating materials such as special insulation films to minimize heat loss.
• Temperature monitoring: Use thermometers or digital temperature control systems to ensure ideal heat.
• Air circulation: An even distribution of heat prevents cold spots in the greenhouse.

Heating can increase energy consumption, so it's important to use it only when absolutely necessary. Proper planning and selection of the heating source will help save costs while promoting the growth of your plants. At the same time, good insulation of the greenhouse, such as with insulation foil, can minimize heating costs.

Tips for the successful use of a greenhouse

• Regular ventilation: Prevents mold growth and ensures healthy plants.
• Good soil preparation: Work in organic fertilizer before planting.
• Pest control: Check the greenhouse regularly for pests and remove weeds.
• Maintenance: Clean the film or glass regularly to maintain light transmission.

Conclusion: Which greenhouse is right for you?

Whether you choose a glass greenhouse or a film greenhouse depends on your individual needs and budget. Glass offers a sophisticated look and a long service life, while film greenhouses are more flexible and affordable.

A greenhouse, whether small or large, is a wonderful addition to any garden. It protects your plants, improves harvests, and offers you the opportunity to garden year-round. With a little DIY skill, you can build one yourself and make your green dreams come true.

Good luck with your gardening!