What to do next – especially with the contaminated cultures -
has always been a problem. In previous seasons I’ve tried washing off the fuzz
and goo, potting the tiny seedlings directly into containers of soil, but they
very promptly died after being removed from the high-humidity environment they
were used to. This year I have all my zipped bags of test-tubes (the caps are
perforated for “gas-exchange,” and plenty of air gets through the plastic bags
as well), hanging under Gro-Lights, arranged on each open wire shelf so they
have light above and a bit of heat from below. It seemed to me that since the
affected seedlings had a couple of leaves they could grow on their own,
so perhaps if I could change their
conditions as little as possible, they wouldn’t even notice they’d been
taken off of “life-support.”
I washed the moldy, sugary medium off under tepid
running water, set each little bulblet with its attached bit of greenery on slightly
moist peatmoss (with some #1-sized poultry-grit mixed in, and another thin
layer as a top-dressing), gently watered the roots in with a weak solution of
fertilizer, and put them in their closed “zipper” baggies, right back under the
lights where they came from. After a day or two I opened the bags a bit, each
day leaving them open a little longer. (The heat from below dries the peatmoss
and grit out quickly, so every few days, when the pinkish grit on the surface
looks whitish and the bags feel lighter, they get more water/fertilizer
solution - “Miracle-Gro” Liquid Houseplant Food - dribbled in with a
turkey-baster). Since the next step will be planting the thriving seedlings out,
a better adaptation of this method from the start would be to cut off the bottom
of the zip-bag and invert it (using a paperclip to hold it closed at the top),
so that when the time comes, it can be opened from the bottom and the entire
contents set into a pot, removing the plastic “nursery-tent” after the little
plant is acclimated.
In her workshops and talks, Judith has explained how
commercial operations handle this step, sometime in January. The lilies that
have been fattening in test-tubes since the summer are decanted and washed, and
the leaves – which are “watery and useless” coming directly out of the tubes,
and would die anyway - are removed. The cleaned bulblets are planted in trays,
covered with newspapers, and left to “vernalize”until spring, putting up new leaves in March.
This necessary “cold-rest” period may also be accomplished by
taking the bulblets out, washing and packing them loosely in bags of
barely-moist peatmoss in the refrigerator for a couple of months, or by putting
the tubes themselves in, bags and all – a method I favor because it disturbs
the growing plants the least, but it does take up more room in the fridge! (Firmly
“embedded” roots can be shaken loose of the medium a bit, or if necessary, the
tube can be opened and the roots spread so that air can reach them – apparently
of prime importance for lilies in all situations, especially when the bulb is
dormant.) Date the bags for when you put them in and when they’re due to
come out, and mark it on your calendar as well. Experts say to time it so
that you can pull the plants – young lilies can retain their green leaves and
still vernalize - out of the tubes, rinse and acclimate them under lights for a
bit, and then plant out in a protected place, so they can keep growing for at
least some part of the summer.