Short trillium

Peter Taggart
Mon, 13 Apr 2020 13:42:19 PDT
I don't have collection details for my plant, I have had a difficult
transition to my present address. at my previous address trilliums had
better conditions with more compost, fewer weeds.... this T. erectum plant
grew larger there, but is having to recover from years in a pot. I suggest
that the height of your trillium growth has more to do with soil, water,
and duration of a cool Winter. Provided there is sufficient heat in Summer,
and sufficient cold in Winter, and appropriate fluctuating temperature in
Spring and Autumn, fruit trees  flower, rhubarb grows, and bulbs form buds
then grow... all without the need for temperatures below freezing. The
duration of heat and cold is also important. A long cold spring will delay
Iris buds opening, and the extra time before unfurling causes more horns
spoons and extra petaloid material to develop in modern Tall Bearded
varieties. Some bulbs from cold habitats will flower below the soil if they
are not kept cool long enough for the stalk to develop first, but the
temperatures required are not below freezing in the examples that I know
Peter (UK)

On Mon, 13 Apr 2020 at 16:26, Roy Herold <> wrote:

> Interesting. I wonder if there is a difference in the T erectums in
> cultivation based on their geographical origin. Perhaps the southern
> ones (say from North Carolina) are better adapted to warm weather than
> the northern ones. The ones I grow came from western Massachusetts where
> the average winter lows are around -20F/-30C.
> --Roy
> On 4/12/2020 6:22 PM, Peter Taggart wrote:
> > I have a stem of Trillium erectum flowering now, in a very mild location
> in
> > the west of Scotland. It is 12 inches high, and the ground where it is
> > planted has not frozen for the past three winters. I dont believe that it
> > requires cold below freezing in Winter.
> > Peter (UK)
> >
> > On Sun, 12 Apr 2020 at 22:36, Roy Herold <> wrote:
> >
> >> Rimmer,
> >>
> >> Not enough cold, I'm sure. I have a Trillium erectum that's normal size,
> >> between 1 and 2 feet tall.  I moved part of it to a bed that's on top of
> >> the septic tank where the soil rarely, if ever, freezes. It now tops out
> >> between 3 and 6 inches tall.
> >>
> >> I was wondering why, and your experience seems to confirm the lack of
> >> cold theory. In the wild it seems to be common in the mountains of
> >> Kentucky, but once you get down to your area, nothing.
> >>
> >> Time to find a colder spot for mine...
> >>
> >> --Roy
> >> NW of Boston
> >>
> >> On 4/10/2020 1:41 PM, Rimmer deVries wrote:
> >>> This was much taller in Michigan but here in S Kentucky in half day sun
> >> it is 3” tall.
pbs mailing list…

More information about the pbs mailing list