Pittosporum Problems

The Problem

Many UK garden enthusiasts have recently noticed a concerning trend with their Pittosporum plants – significant leaf drop. This has left many of these plants appearing bedraggled, with brown leaves, bare twiggy branches, and in some cases, a complete loss of leaves.

Possible Causes

Several theories have emerged as to why this is happening:

1. Weather Fluctuations: A common speculation is that the irregular weather patterns recently experienced might be the cause. Specifically, the combination of a summer heatwave followed by a winter of alternating waterlogged and freezing conditions seems to have stressed many plants.
2. Species Vulnerability: The Royal Horticultural Society (RHS) points out that while some Pittosporum species are hardy, they might still be susceptible to waterlogging.
3. Hardiness: Many Pittosporum varieties are only semi-evergreen, meaning they can drop leaves when exposed to unusually cold conditions. Moreover, some of these plants are native to New Zealand, making them not completely hardy against the UK’s occasional heavy frosts.
4. Light Exposure: Some observations have pointed out that leaf drop seems to be more significant at the bottom of the plants, suggesting a potential lack of light as a contributory factor.

Possible Solutions and Remedies

1. Check for Plant Life: Before considering the plant dead, it’s recommended to scratch off a bit of the bark to check if the twig underneath is still green and sappy. This indicates that the plant is still alive and might recover.
2. Strategic Pruning: If there’s hope for the plant’s recovery, consider trimming back in the spring to give it the best chance. Waiting until new leaf growth is visible before trimming out the bald branches is often recommended.
3. Proper Plant Care: Ensuring the plant is not waterlogged and is protected from severe frosts can help. Furthermore, providing them with a feed and mulch could aid in their recovery.
4. Sheltered Planting: Many gardeners have found success by planting their Pittosporum in sheltered spots, protecting them from the worst of the weather and cold snaps.

Concluding Thoughts

The Pittosporum’s recent problems in the UK serve as a reminder of the delicate balance required in gardening. While some plants may recover with the coming of spring, others might need replacement. But with careful attention and a strategic approach, these beautiful plants can continue to thrive in the UK’s diverse climate.