I think the trick with chicken manure is to not over do it. Put it on in small amounts. The bunnie berries can't be overdone. I tried. The worst thing that happened was the tip of the cigar leaf tore itself apart before it unrolled. I have chickens and rabbits. Next year when the plants start growing again I will test both. Two plants of same size, one gets rabbit, one gets chicken. We will see if I can catch some leaves on fire.
