Frequently Asked Questions

• Why is light management important in greenhouse growing?

  Effective light control improves crop quality, consistency, and growth rates while reducing stress from excess radiation or low light levels.

• How can too much sunlight affect greenhouse crops?

  Excessive light can lead to leaf burn, overheating, reduced quality, and uneven growth, especially in sensitive crops.

• What type of screen is best for light diffusion?

  Svensson’s Harmony and PARperfect screens are designed to scatter light evenly, reduce hotspots, and support uniform crop development.

• Can light-diffusing screens help increase yield?

  Yes. By providing more consistent light across the crop canopy, light-diffusing screens improve photosynthesis efficiency and promote uniform growth.

• How do shading screens support crop protection?

  Shading screens reduce light intensity during peak radiation, helping prevent crop stress and maintain a more stable climate.

• What’s the difference between shading and light diffusion?

  Shading reduces overall light levels, while diffusion spreads available light more evenly across the crop to avoid hotspots and shadows.

• Can I manage light differently for winter and summer crops?

  Yes. Seasonal strategies often include adjusting screen use, light levels, and airflow to maintain optimal light balance throughout the year.

• What is photoperiod control in greenhouse growing?

  Photoperiod control is the regulation of day and night length to influence flowering and vegetative growth in light-sensitive crops.

• Why is daylength important for some crops?

  Certain crops respond to daylength signals, triggering flowering only under short-day or long-day conditions. Managing light helps maintain crop timing and quality.

• How can I control daylength in my greenhouse?

  Using blackout screens like Svensson's Obscura allows you to create artificial night by completely blocking outside light, helping you manage flowering cycles.

• What is the difference between blackout and shading screens?

  Blackout screens block nearly all light for photoperiod control, while shading screens reduce light intensity to protect crops from radiation stress.

• Can blackout screens help with energy savings too?

  Yes. When used in a dual-screen system, blackout screens can contribute to insulation, helping reduce heat loss and save energy during cooler periods.