What Mesh Size Insect Net Is Best for Greenhouse Vegetables?

For most greenhouse vegetables, 40 mesh insect net is the most suitable choice.

If pest infestation is severe (especially thrips), 50-60 mesh insect net is recommended.

If ventilation is more important than pest control, 32-mesh or 40-mesh insect net is more suitable.

Whether the size of the insect net is suitable depends on the type of vegetable being grown, the target pest, and the local temperature. A mesh that is too large may not be able to keep out pests, while a mesh that is too small will affect ventilation and increase the greenhouse temperature.

Why is The Mesh Size of Insect Net Important?

Mesh size refers to the number of openings per inch of mesh.

A higher mesh count means smaller pore size, better insect control, but lower air permeability.

Choosing the appropriate mesh size helps growers reduce pesticide use while maintaining healthy crop growth.

Pests that greenhouse insect net typically protect against include: Aphids, Whiteflies, Thrips, Leaf miners, Flea beetles, and Fruit flies.

How to Choose The Right Mesh Size?

SUGRAND has compiled a table for different types of vegetables. Please refer to the table to choose the appropriate insect net size for you.

32 Mesh Insect Net

Suitable where airflow is the highest priority and where pests are relatively large.

Recommended for:

Tomato

Pepper

Eggplant

40 Mesh Insect Net

40 mesh is the most commonly used specification.

Advantages:

Good ventilation

Controls whiteflies and aphids

Inexpensive

Easy to install

For most vegetable growers, 40 mesh insect-proof netting is the best choice.

50 Mesh Insect Net

50 mesh insect net can prevent small pests such as thrips.

Suitable for:

Lettuce

Spinach

Herbs

Leafy Vegetables

For growers, it's crucial to ensure good ventilation in the greenhouse, as higher mesh counts and smaller mesh sizes can hinder airflow.

60 Mesh Insect Net

60 mesh netting can block very small pests.

Suitable for:

Seedling nurseries

high-value crops

areas severely infested with thrips

Due to the dense mesh, air circulation is limited, requiring an additional ventilation system.

Learn more：How To Choose The Right Insect Net for Vegetables?

FAQ About Greenhouse Insect Net

Q: Will The Mesh Size Affect Air Circulation?

A: Yes, as the number of mesh openings increases, air circulation decreases. Choosing a mesh size that is too small may lead to excessively high temperatures inside the greenhouse.

Q: What Mesh Size Stops Thrips?

A: Most growers choose 50 mesh insect net or 60 mesh insect net screens to prevent thrips.

Q: 40 Mesh Insect Net Suitable for Growing Tomatoes？

A: Yes, 40 mesh insect net is ideal for growing crops such as tomatoes, cucumbers, and peppers.

Conclusion

Choosing the right greenhouse insect net is crucial, and for most vegetable growers, 40 mesh insect net is the most popular.

If you have any questions about choosing insect net, you can contact the manufacturer SUGRAND.

SUGRAND has over 18 years of experience in manufacturing insect net.

We supply:

• 32 mesh insect net

• 40 mesh greenhouse insect net

• 50 mesh insect proof net

• 60 mesh insect net

OEM, wholesale and custom sizes are available.

And you can download product catalog to see the most popular sizes of insect net.