Zohrevovanie rastlín v zime - ako vybrať vykurovací kábel a termostat

Pridané: streda 19. 11. 2025


Winter care for exotic and frost-sensitive plants requires a professional approach. At Onninen, we know that heating plants in winter is the key to maintaining healthy vegetation of palms, banana plants, or Mediterranean plants in the Polish climate. Our many years of experience in the installation industry allows us to recommend proven solutions that guarantee safe overwintering even for the most sensitive specimens.

Professional plant heating systems based on heating cables with thermostats provide precise temperature control. Our practice shows that properly selected internal heating cables combined with advanced thermostats can reduce heating costs by up to 30% compared to traditional methods.

Plant heating system in the greenhouse

Check internal heating cables at Onninen warehouse

Why do plants need additional heat in winter

Plants from tropical and subtropical zones have limited resistance to low temperatures. In our range of specialized heating cables, we find solutions for plants that overwinter in gardens, greenhouses, or unheated spaces.

Factors affecting plant sensitivity to frost

  • Duration of frost exposure - the longer negative temperatures persist, the greater the risk of damage
  • Wind speed - increases the perceived temperature and accelerates heat loss
  • Humidity - dry air further weakens the defensive mechanisms of plants
  • Location in the garden - corners and places exposed to drafts require more intensive heating

Professional heating cables from our offer operate over a wide temperature range - from -40°C to +85°C, ensuring reliable protection even in the coldest winters.

How to choose the right heating cable for plant heating

At Onninen, we offer a wide range of heating cables tailored to various gardening applications. Our team of experts will help you select the optimal solution for your garden's specific needs.

Types of heating cables in Onninen's offer

Type of cable Heating power  Best application  Special features
Constant-resistance cables  6-15 W/m Pots, small plants  Constant power along the entire length
Self-regulating cables 10-25 W/m  Large palms, trees  Automatic power regulation
Low-profile cables  16 W/m  Flat surfaces Minimal thickness
Cables with plug   17 W/m Small home installations Ready to connect

Technical parameters crucial for plant heating

Our experience shows that an IP68 protection class is the minimum for cables used in horticulture. It provides full resistance to dust and immersion in water, which is crucial in a garden environment.

The length of the cable is selected depending on the size of the plant - for palms 2-3m high, a 6-12m cable is sufficient, while larger specimens require even 20-meter heating cables available in our assortment.

Thermostats for heating cables - precise temperature control

At Onninen, we offer advanced thermostats for heating cables from brands Devi, Nvent Raychem, and Danfoss. Our devices provide precise temperature control with an accuracy of 0.1°C.

Types of thermostats in Onninen's offer

  • Analog thermostats - easy to use, ideal for small installations
  • Electronic thermostats - advanced regulation with a display
  • Programmable thermostats - the ability to set heating schedules
  • WiFi thermostats - remote control via a mobile app
  • Humidity sensor thermostats - automatic activation when temperature drops and humidity rises

Key functions of thermostats for plants

Our thermostats are equipped with a PASC algorithm that allows for energy savings of up to 80% through proportional control relative to ambient temperature. This function is particularly valuable for long-term heating of plants throughout the winter.

Typical temperature ranges for garden thermostats are +3°C to +25°C, with the possibility of precise regulation every 0.5°C. Our offer also includes models with alarm relays signaling improper system operation.

Installation and setup of plant heating systems

Professional installation of heating cables requires adherence to detailed installation guidelines. Our specialists in Onninen branches across Poland provide technical advice at every stage of project implementation.

Methods of installing heating cables around plants

The heating cable can be laid in several ways depending on the type of plant:

  • Spiral wrapping around the trunk - for palms and trees, maintaining a distance of 15-20cm between turns
  • Buried installation - around the root system, at a depth of 10-15cm
  • Attachment to pots - using zip ties or aluminum tape
  • Installation in protective mats - between layers of insulating material

Safe installation rules

It is crucial to avoid crossing cables (except for self-regulating models) and to ensure a minimum bending radius of about 50mm. The thermostat should be mounted in the coolest placeSelf-regulating heating cable T2RED 15W/M 948739-000 of the protected plant to ensure precise temperature regulation.

All electrical connections must be protected by a 30mA residual current device, which guarantees the safety of the heating system.

Practical applications of heating cables in horticulture

From our many years of experience at Onninen, it follows that heating cables have a wide range of applications in professional horticulture and among enthusiasts of exotic plants.

Most common applications in practice

  • Frost-resistant palms (Trachycarpus, Butia, Jubaea) - protection against temperatures below -10°C
  • Banana plants (Musa basjoo, Ensete) - protection of the pseudostem and roots
  • Mediterranean plants - European olive, rosemary, lavender in pots
  • Agaves and yuccas - protection against freezing during symptomless frosts
  • Cacti in unheated greenhouses - maintaining a minimum temperature

In our implementations, we often combine plant heating systems with covers made of non-woven fabric or coconut mats. Such a comprehensive system provides optimal protection against cold and wind.

Frequently asked questions

What power of heating cable should I choose for heating palms?

The power of the cable depends on the height of the palm and the ambient temperature. For palms 2-3m high, we recommend cables with a power of 10-15W/m and a length of 8-12m. Larger specimens require cables with a power of 20-25W/m. In our offer, you will find precise tables for selecting power for specific plant species.

Can the heating cable operate throughout the winter?

Yes, professional heating cables are designed for continuous operation. Our products can operate throughout the winter without interruption, provided that the appropriate thermostat is used. Self-regulating cables from our offer automatically adjust power to conditions, ensuring energy savings and long lifespan.

Which thermostat should I choose for heating plants in the garden?

For garden applications, we recommend thermostats with temperature and humidity sensors. Ideal are models with a regulation range of 0-25°C and an IP65 protection class. At Onninen, we offer thermostats that turn on heating at +3°C and turn off at +10°C, ensuring optimal plant protection.

Can heating cables be crossed during installation?

It depends on the type of heating cable. Self-regulating cables from our offer can touch and cross without the risk of overheating. Constant-resistance cables require a minimum distance of 15mm between wires. Always check the technical specification of the specific model before installation.

How much does heating plants with heating cables cost?

The cost depends on the power of the system and the operating time. A 200W system operating 8 hours a day costs about 40-50 PLN per month at current energy prices. Programmable thermostats from our offer can reduce these costs by up to 30% through intelligent heating power control.

Are heating cables safe for plants?

Yes, professional heating cables are completely safe. Our products have safety certificates and do not emit harmful substances. The temperature of the cable does not exceed 40-60°C, which is safe for plant tissues. Additionally, the plastic insulation protects against mechanical damage.

Professional heating solutions for demanding gardeners

At Onninen, we combine over 100 years of experience in the installation industry with the latest heating technologies. Our team of specialists in 36 branches across Poland provides comprehensive support - from the design of the plant heating system to its installation and service.

We cooperate with renowned manufacturers such as Devi, Nvent Raychem, and Danfoss, which guarantees the highest quality of the offered solutions. In our assortment, you will find everything - from simple cables with plugs to advanced systems with programmable thermostats and WiFi functionality.

We invite you to contact our experts who will help you choose the optimal solution for your garden. With professional internal heating cables and precise thermostats for heating cables from our offer, your plants will safely survive any winter.

Check internal heating cables at Onninen warehouse