https://github.com/Vazkii/Botania/blob/master/src/main/java/vazkii/botania/common/block/subtile/functional/SubTileAgricarnation.java#L37-L38

The RANGE constant is used when calling rand.nextInt() rather than the computed range variable so the petite version is still searching an 11x11 area, just not centered on the flower.