OSAKA, Mar 18 (News On Japan) - As cherry blossom season approaches, anticipation is building alongside the swelling buds, yet Japan’s beloved sakura are increasingly under threat from pests, aging trees, and disease, raising concerns about the future of the country’s most iconic spring symbol.
Reports from across Japan describe growing damage caused by insect infestations, particularly from invasive species that lay hundreds to thousands of eggs in cherry trees, with larvae burrowing inside and eventually killing them, while at the same time, fungal infections such as “tengu disease” are spreading, causing abnormal branch growth and preventing blossoms from forming.
The Somei Yoshino variety, long considered the standard of cherry blossoms in Japan, is especially vulnerable due to its genetic uniformity, as it can only be propagated through grafting, meaning trees nationwide share nearly identical DNA, allowing diseases to spread rapidly and extensively.
Originally developed in the late Edo period, Somei Yoshino became the dominant variety after World War II, widely planted as a symbol of national recovery, and today remains the benchmark for cherry blossom forecasts, with the majority of observation sites across the country using this variety.
However, the aging of these trees, combined with expanding pest habitats—spreading at an estimated rate of around two kilometers per year—has forced local governments and communities to cut down damaged trees, altering once-familiar landscapes lined with cherry blossoms.
In areas such as Tamba-Sasayama in Hyogo Prefecture, where roughly 10,000 cherry trees stand, many of them Somei Yoshino, efforts to control the spread of disease through pruning infected branches have struggled to keep pace, prompting a shift toward planting alternative varieties.
Among the candidates gaining attention is Jindai Akebono, a cherry tree discovered in Tokyo’s Jindai Botanical Garden, known for its slightly larger flowers and deeper pink hue compared to Somei Yoshino, while also offering greater resistance to pests and disease.
Botanical experts note that as many Somei Yoshino trees planted during the postwar period approach the end of their lifespan, more municipalities are beginning to adopt Jindai Akebono and other resilient varieties as replacements to preserve cherry blossom landscapes for future generations.
Yet this transition could bring subtle but significant changes to Japan’s seasonal traditions, as Jindai Akebono tends to bloom slightly earlier than Somei Yoshino, potentially shifting peak viewing from early April toward late March, meaning cherry blossoms may coincide more with graduation ceremonies rather than school entrance ceremonies.
Despite these changes, the enduring cultural significance of cherry blossoms remains unchanged, even as their appearance and timing evolve, suggesting that Japan’s spring landscapes may soon look different, while continuing to captivate people across generations.
Source: KTV NEWS
