Most of Cape Town's English Oaks will be gone in 5 years - expert

John Maytham interviews Mark Johnston from TreeKeeper Cape Town.

Listen below.

National Arbor Week in South Africa is observed during the first week of September.

This occasion invites people of all ages to appreciate and honour the beauty and significance of trees, with a particular focus on native species.

Given the escalating Polyphagous Shot Hole Borer crisis, experts warn that Cape Town’s English Oaks could be lost within five years.

This makes the planting of new trees more crucial than ever.

"There are no solutions in place at the moment."

- Mark Johnston, TreeKeeper Cape Town

The target species for intervention include London plane trees, English Oaks, Liquidambar, Japanese and Chinese Maples, and Boxelder. 

However, recent countrywide surveys reveal that the infestation is spreading to fruit trees such as olives and indigenous species like coral trees, wild olives, yellowwoods, and Natal figs.

Johnston observes that most trees in urban gardens and other areas are now hosts to the beetle.

He suggests that trees with higher resin content, such as gumtrees, eucalyptus, and stone pines, may offer better resistance to the beetle.

If you suspect your trees are infested, follow these recommendations:

• Avoid pruning, cutting down, or disposing of affected wood.
• Inform everyone in your neighbourhood.
• Contact a reputable tree expert with a proven track record in dealing with beetle infestations and exploring alternative solutions.
• Refrain from using or purchasing firewood from unknown sources.
• Remain vigilant in monitoring and managing your trees.

TreeKeepers Cape Town is championing a substantial tree-planting initiative, urging residents to plant as many as possible.

"We do need to think beyond indigenous trees."

- Mark Johnston, TreeKeeper Cape Town

Scroll up to the audio player to listen to the interview.