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Re: Lilium philadelphicum Germination
Lilium philadelphicum is a hypogeal germinator (seeds germinate readily
at warm temperatures over a 3-8 week period, forming only the bulbil at
this stage. A further cold period is required (2-3 months) before they
will send up their first true leaf).
The easiest way to deal with this type of germination is to mix the seed
with barely moistened vermiculite or other non-soil mixture and place
the works inside a Zip Lock bag & watch the action. The bag is easy to
place in the fridge for the cold phase and the individual bulbils easy
to simply pot up after the cold period. Done in a pot, you may never be
aware of any of the underground activity until the stage when the leaf
emerges, and might simply assume that nothing has happened.
It is important to keep the plants growing for as long as possible once
they have sent up the first leaf. If this happens mid winter, place
under lights and lightly fertilize and keep them growing until the
foliage naturally dies back.
In fact, I have spent the past few days un-potting trays of this Lily
along with Lilium columbianum and L. canadense.
They have been actively growing under lights since September and the
foliage has now died back. It is now time for them to go back into the
fridge. The bulbils are dug up, placed back into the ZipLock mixed with
barely moistened vermiculite. By Spring, they will be planted out in
nursery beds to fatted up. I do not expect flowering sized plants for
another few years.
Kristl Walek
Gardens North Seed
5984 Third Line Road, N.
North Gower, Ontario
Canada K0A 2T0
Phone: (613) 489-0065
Fax: (613) 489-1208
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