Pond Boss Forums MANAGING AN EXISTING POND Evaluating and adjusting fish populations What age for LMB spawn?

Next year.

Lower limits for LMB spawning are 10"-12" and two years old. I had LMB up to 11" last year, had been in my pond for one year, and I hoped (fingers crossed), but no sign of a successful spawn. This year they better, or else.

You got nice LMB growth for one year for as far North as Iowa.