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Protecting the garden from spring frosts

Spring frosts threaten crops, especially at flowering time. Learn how to protect yourself to preserve fruit quality and avoid losses.

Causes of spring frosts

Spring frosts are caused by a variety of physical processes, the understanding of which is critical to selecting effective garden protection measures. Each case is unique and protection approaches must be adapted to the specific conditions.

Radiation frost: occurs on clear, calm nights when plants and soil lose heat. Cold air accumulates near the surface, creating an inversion that requires special methods to protect flowers and ovaries.

Advective frost: is caused by an influx of cold air masses. Wind breaks the inversion, temperatures drop throughout the canopy height, and methods based on air mixing or local covering have limited effectiveness.

Frost protection

Wind machines for orchard protection

Wind machines leverage temperature inversion during radiation frosts. They mix cold near-ground air with warmer layers above the canopy, equalizing temperatures in the blossom and fruit-set zone.

Key advantages include ease of operation and a high level of automation. After installation, the system typically works without constant staff presence and does not require significant ongoing ownership costs.

Drawbacks include complex and expensive installation, as well as occasional unintended activations caused by automation settings and local temperature fluctuations, which is not always convenient in day-to-day operation.

Frost protection Detail 1
Frost protection Detail 2

Smoke generators

Smoke generators create a dense aerosol layer that reduces nighttime heat radiation from the orchard surface. The method is intended primarily for radiation frosts with little or no wind.

The main advantage is low installation cost and the ability to deploy quickly without major works. This makes the method accessible for small farms or as a temporary solution.

Limitations include the high cost of consumables, the need for people in the orchard for manual start and servicing, and near-zero effectiveness once even light wind appears, because it breaks up the smoke layer.

CropAid

CropAid works not with the air, but with plant physiology. The treatment affects micronutrient metabolism and increases tissue tolerance to short cold stress, reducing the likelihood of damage to blossoms and fruit set.

It is convenient in operation and easy to combine with mechanical orchard protection methods. It is often used as part of an integrated scheme, especially under unstable spring weather.

A key constraint is the need for advance application: treatment must be applied at least 48 hours before the expected frost, and in practice it is more often planned 72–96 hours ahead, which requires accurate forecasting and planning.

Frost protection Detail 3
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Wind machines

Wind machines

A wind machine for protecting orchards from spring radiation frosts down to -3 °C.

Smoke machines

Smoke machines

The smoke machine produces a dense glycerin fog that helps retain heat near the surface and reduces the risk of damage to blossoms

AntiFrost MAX

AntiFrost MAX

A natural probiotic biostimulant for foliar application and irrigation use. Helps plants cope more easily with cold spells and recover faster after stress.

Choose the right solution

Explore our product groups to find equipment that fits your needs.

Methods of orchard frost protection

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