Q: What is tissue culture?
"Banded" Dionaea
A: Some growers prefer to avoid matters of planting media entirely and propagate their
plants in petri dishes in laboratory conditions. This is called tissue
culture (TC) or in vitro propagation. Despite its peculiar nature, tissue culture is often
the best way to propagate plants rapidly.
Tissue culture has its greatest utility in rapidly propagating rare species or new cultivars.
The easiest way to do tissue culture is by starting with seeds, which can
be sterilized while keeping the seed alive. It is much trickier to get living
plants into tissue culture.
Clumping Dionaea
There is an interesting phenomenon associated
with plants that have recently been planted
from tissue culture into regular planting media. Perhaps because of weird hormonal
imbalances, it sometimes takes a few years for the plant to grow normally. For the first
few seasons, plants from tissue culture (especially Sarracenia and
Dionaea) may grow in a dense
clumped way, and do not settle down into one or two growing tips. They also
seem more resilient to cultivation errors during this time. I have heard
people speculate that the plant is just wildly happy that,
fresh from sterile tissue culture, it does not yet have
the normal pathogens or parasites that regular plants do. Who knows...
I have never tried tissue culture. I like the smell of wet Sphagnum
too much. However, while writing my book I researched tissue culture and wrote a fairly
long section on it....which I ultimately had to excise from the text because of space constraints.
But, since it was a good chunk of information,
I have posted it for you in the FAQ library.
Page citations: Darnowski, D. 2004; Rice, B.A. 2006a; personal observations.