These offsets may still be attached to the main tuber and should be severed when the mother tuber is replanted for a new season. In other species the offsets are already loose when the plant is dug up after a season's growth. Usually less than 100 percent of the offsets grow into new plants. There is always a percentage of inert offsets that may linger on for years without sprouting and finally die. Every once in a while however, such a latent offset may start growing again, so never throw offsets away until they are definitely dead.
Some species produce bulbils on the leaves.
These are of two main types. A third type has been found only in A. yuloensis, which is half epiphyllar and half intercalary. These are A. bulbifer , A. muelleri and A. kiusianus . The first two species exhibit a genome with 39 chromosomes and can thus not form normal haploid gametes for sexual reproduction. Vegetative propagation through tissue culture has succeeded in several occasions as witnessed by the literature.