9月、管理している庭の芝生に白いキノコが大量発生しました。見た目の問題だけでなく、放置すると根への影響も懸念されるため、周辺への広がりを防ぐ意味も込めて、庭全体に殺菌剤を散布しました。
In September, a large batch of white mushrooms suddenly appeared in the lawn of a garden I manage. Beyond how it looked, there was a real concern they could affect the roots if left alone, so — partly to stop them from spreading — I applied fungicide across the whole lawn.
その後、白いキノコは見られなくなりました。ただしこれは薬剤の効果だけとは言い切れず、時期的に自然と収まった可能性もあります。キノコの発生はタイミングに左右されやすく、原因を一つに断定するのは簡単ではありません。
After that, the white mushrooms disappeared. That said, I can’t say for sure it was the fungicide alone — it’s possible they would have died back naturally around that time anyway. Mushrooms tend to be pretty timing-dependent, so it’s hard to pin the cause down to just one thing.
その後、今度は別の種類の茶色いキノコが発生しました。実はこれ、予防も兼ねた全体散布のすぐ後だったんです。大量に使うのは避けたいので、今回は庭全体じゃなくキノコが生えてる箇所だけにピンポイントで散布することにしました。結果、周囲に広がることなくその場で枯れてくれて、ホッとしてます。
Not long after, a different kind — brown mushrooms this time — showed up. And this was right after that full-lawn application. Since I’d rather not overuse fungicide, this time I only treated the spots where the mushrooms were actually growing, instead of the whole lawn again. It worked out — they died off right where they were without spreading, which was a relief.
同じ「キノコが生えた」でも、量や種類、タイミング次第で対応は結構変わってきます。こういう判断ができるのも、日々足繁く庭を見てるからこそかなと思ってます。
Even with the same “mushrooms showed up” situation, the right response can change depending on how much there is, what kind it is, and the timing. Being out in the garden regularly is really what makes that kind of judgment call possible.