How long does blood meal last? Basically, do you have to purchase every year? Does it lose its strength? I used some I purchased last year when planting flowers this year, and the squirrels or something still dug them up.
Certified GKH Gardening Expert
You should normally use this fertilizer on nitrogen starved plants/soil. Depending on the amount used and type of plants fertilized, it can last up to three months. The best way to tell if you need to add blood meal is to have your soil tested. This article will also help: https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/blood-meal-fertilizer.htm