In a recent government meeting, experts highlighted the urgent need for improved tree diversity in urban parks, particularly in light of the impending threat posed by the Emerald Ash Borer, an invasive species that has already devastated millions of ash trees across the United States. The discussion centered around the \"10, 20, 30 formula,\" a tree diversity metric that aims to ensure a balanced mix of tree species in urban environments.

The speaker emphasized that many landscape architects and urban planners are unaware of these metrics, which could significantly enhance the resilience of urban forests. With the Emerald Ash Borer approaching Utah from Colorado, local officials were warned that the state’s urban forests, which are predominantly composed of ash trees, could face catastrophic losses if proactive measures are not taken.

Concerns were raised about the current lack of diversity in municipal parks, with many parks reporting less than 50% diversity. The speaker urged that small, incremental changes in tree planting practices could lead to healthier urban forests over the next two decades, creating \"legacy parks\" that would benefit future generations.

Local officials expressed their appreciation for the presentation, acknowledging the need for further research and better planting techniques. One official noted the importance of understanding the long-term implications of tree choices, sharing personal experiences of planting trees without adequate knowledge of their growth patterns.

The meeting concluded with a call to action for city planners and residents alike to prioritize tree diversity and informed planting practices to safeguard urban green spaces against future threats.