Aluminium Greenhouse Care: Tips and Best Practice

03.12.2023.

An aluminium greenhouse offers many benefits to both new and experienced gardeners. However, regular maintenance is essential if you want to get the most from it and extend its working life. These practical tips and best practices will help keep your aluminium greenhouse in excellent condition.

1. Regular cleaning

Routine cleaning is one of the most important parts of greenhouse care. Clean both the interior and exterior, as dust, dirt and algae can build up on the glazing and reduce the amount of light reaching your plants.

Tips:

Use a soft brush with water and mild soap to clean the glazing.
Rinse thoroughly to remove soap residue that could harm plants.
Clear gutters and downpipes so leaves and debris cannot block water drainage.

2. Inspect the structure

Inspect the aluminium frame regularly to make sure there is no damage or wear that could affect the greenhouse’s stability.

Tips:

Check that all screws and bolts remain tight and secure.
Look for rust or corrosion, particularly around joints and fixings.
Examine seals around glazing and doors to help prevent water getting in.

3. Ventilation and air movement

Good ventilation is vital for preventing mould and plant diseases in a greenhouse. Make sure vents and windows operate properly and are not obstructed.

Tips:

Check vents regularly and remove anything blocking them.
Consider automatic window openers to improve air circulation.
Use fans to improve airflow, especially during warmer months.

4. Soil care

Soil inside your greenhouse also needs attention. Consistent soil care can help prevent disease and support healthy plant growth.

Tips:

Replace or top up soil annually with fresh compost or potting mix.
Use mulch to retain moisture and reduce weed growth.
Rotate crops to avoid soil fatigue and reduce disease.

5. Irrigation systems

A reliable irrigation system is important for healthy plants. Check regularly for leaks and make sure sprinklers are working correctly.

Tips:

Inspect pipes and sprinkler heads for blockages and leaks.
Clean sprinkler heads regularly to prevent mineral build-up.
Consider drip irrigation to use water more efficiently.

6. Preparing for winter

If you live in an area with cold winters, prepare your greenhouse for lower temperatures before the cold season arrives.

Tips:

Insulate with horticultural bubble wrap or thermal screens to reduce heat loss.
Make sure the glazing is well sealed to avoid draughts.
Use heat mats or heaters to regulate greenhouse temperatures.

7. Pest and disease control

Regular checks for pests and diseases can stop small issues from causing major damage to your plants.

Tips:

Inspect plants often for aphids, whitefly, spider mites and other pests.
Use appropriate biological pest controls to tackle pests without harmful chemicals.
Remove diseased plants or plant parts promptly to prevent spread.

Conclusion

Caring for an aluminium greenhouse takes regular attention, but the results make the effort worthwhile. By following these practical tips and maintenance routines, you can help ensure that your greenhouse remains a productive, sustainable place to grow your favourite vegetables, fruit and flowers. With consistent care, you can enjoy a healthy, flourishing garden under glass for many years. Adapt watering, ventilation and seasonal protection to your local climate, as conditions can vary considerably across South Africa. Check the greenhouse after heavy rain, strong winds or prolonged hot weather, and deal with small issues before they become larger repairs.