When planning a greenhouse project, one of the most important but often overlooked decisions is choosing the right shading percentage. The correct shade level not only protects your plants from excess sunlight but also balances temperature, humidity, and light exposure—directly impacting growth, yield, and crop quality.
The “best” shading percentage depends on three key factors:
- your crop type,
- your local climate, and
- seasonal variations.
Let’s break it down.
General Shade Levels for Greenhouses Low to Moderate Shade: (30–50%)
- Ideal for heat-loving crops like tomatoes, peppers, and strawberries (30–40%).
- Sun-loving vegetables such as cucumbers and beans thrive at around 40–50%.
Best for regions with moderate sunlight where plants still need significant direct light to thrive.
Moderate to High Shade: (50–70%)
- Leafy greens and herbs such as lettuce, spinach, and cilantro prefer 50–60%.
- General-purpose use: A 50% shade cloth is versatile, balancing light and temperature for many crops.
Recommended for warm climates where overheating is a risk but plants still need steady light exposure.
High to Very High Shade: (70–90%)
- Shade-loving plants like orchids, ferns, and philodendrons thrive in 70–90%.
- Delicate crops benefit from 70% shade, especially in hot, sunny regions with intense radiation.
Ideal for sensitive plants and ornamental production where heat stress could be damaging.
Factors to Consider When Choosing Shade Percentage
- Crop Type – Different plants have distinct light and heat needs. Always match the shade percentage to your crop.
- Climate – Hotter regions require higher shading percentages, especially during peak summer.
- Seasonal Adjustments – Consider switching or layering shade nets to adapt to cooler vs. hotter months.
- Monitoring & Flexibility – Continuously check plant performance. Adjust or replace nets if crops show signs of stress.
Practical Tips for Greenhouse Growers
- In tropical and hot climates, opt for higher shading (50–70%) to prevent heat stress.
- In milder climates, lower shading (30–40%) works better, ensuring plants still receive enough sunlight.
- For commercial projects, a 50% shade cloth is often the safest “all-rounder” choice if you grow mixed crops.
- Consider movable or retractable shading systems for flexibility across seasons.
Final Thoughts
There’s no one-size-fits-all answer when it comes to greenhouse shading. Instead, think of shade percentage as a dynamic tool: adjust it based on your crop, climate, and season. By doing so, you’ll create the optimal growing environment for healthier plants, higher yields, and a more sustainable operation.
Choosing the Right Shade Percentage = Healthier Crops
Talk to us today for the best shade net for your greenhouse!
