Outdoor Plant Hire – Why do leaves turn yellow?

For people planning for Outdoor plant hire, it is important to understand signs which may signal that the plant is unhealthy. There could be many reasons behind the leaves turning yellow. In certain cases, this process is completely natural while in others it can be caused by pests or environmental changes.
Outdoor plant hire must always ensure that the plants are watered regularly. If the plant remains without water for long, the leaves will turn yellow and die. Similarly, dropping leaves is a natural phenomenon in case of drought to conserve water because plants lose water through the broad leaves.
Pest infestation can also cause the yellowing process. Common pests like aphids and spider mites suck nutrients from the leaves and cause discolouration of the leaves. Environmental changes like heat spells, sun burn, frosts etc. can cause outdoor plant hire to become stressed thereby causing the leaves to yellow.