stephen willson via pbs
Tue, 19 Jan 2021 10:18:42 PST
Hello Sylvia,

I agree with Michael that L. formosanum can be brought to flower in a year.  Ensuring adequate summer watering may be something to watch for in CA, but they will survive the winters just fine.  If you planted seeds in January 2020 then I would expect that you will have some bulbs flowering by late-summer this year; not all, but definitely some.  I grow many types of lilies and I find that Anderson Band Pots are ideal for growing-on in pots before eventually planting in the garden.  This is particularly true for slow-growing species that might take 5 years or more to get to flowering size.  I use the AB36-size pots.  These are 2.88"/7.3cm square at the top and 5.5"/14cm tall.  25 of these will fit inside an AFLAT5 tray.  I ordered mine online from Stuewe & Sons.  The AB36 plots came in a box of 200 and so I ordered eight of the AFLAT5 trays.  I have most of them in use by the middle of summer after potting-on seedlings.  The small plants can happily stay in these pots for 2 to 3 years or so, until they get to flowering size.  (I should say that I haven't got around to a nursery bed yet, which would be my preferred option; hence the many pots.)  The 5.5" height provides enough soil for them to be happy.  In your case, having enough depth of soil could be a challenge if you are to keep the seedlings in their current pot for some time.  Depending on your circumstances, you might try separating out some of the exterior seedlings and pot them on into a larger pot (or pots) and leave the rest in the original pot with some added soil, but my preference would be to pot them all on now into larger pots, or into the garden.  Or a combination of the two if you want he hedge your bets against the various critters that like lily seedlings.  Also, when they do come into flower, I would save any seeds that set and replant these in early 2022.  L. formosanum can be short-lived if forced, and they can be susceptible to some virus diseases, so collecting your own seeds is a good way to propagate these lilies further.

Hope this helps!


From: pbs <> on behalf of J.Mäsgen via pbs <>
Sent: Tuesday, January 19, 2021 4:51 PM
To: <>
Cc: J.Mäsgen <>

Hi Sylvia,

Lilium formosanum is one of the fastest growing species in the genus. You can get it from seed to flowering in 12 month! I did sow mine in November, poted the seedling after germination end of December in 7 cm pastic pot and planted them in May between my Rhododendron in the garden. End of September the did flower, each with 1 flower. Next year they where already fully mature plants with up to 5 flowers, again in September. I grow in the west of Germany with an oceanic wintercold climate. Therefore I sow and grow fist under frostfree conditions in a greenhouse with daytemperatur of 14°C and planted out after the risc of frost was gone, which is normaly im May. Your climate in Oakland CA should be even better to grow Lilium formosanum outside with some watering in summer.
the origion of my plants is Japan.



A year ago this month I sowed fresh L. formosanum seed and got spectacular germination.  I now have three pots filled with seedlings that made it through their first summer and our long, hot, dry autumn without turning a hair.  Now what?  I?ve checked the Wiki, and while I?m sure there?s information there, I couldn?t find suggestions for what to do with one year old seedlings in crowded pots.  I?m inclined to let them grow on in their pots for another year as they?re doing well and have showed no signs of flagging under any circumstances.

If anyone can suggest a program of care for these seedlings for the next year or so I?d be grateful.

Many thanks,

Sylvia Sykora
Oakland, CA

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