Did some checking, out of curiosity.
And yeah. Interesting as hell.
We recorded 65 dBSPL (dB of sound pressure level) ultrasonic sounds 4 inches (10 cm) from tomato and tobacco plants, implying that these sounds could be detected by some organisms from up to several feet (meters) away.
https://www.sci.news/biology/plants-ultrasonic-clicks-07895.html