Re: Angelica gigas; eupatorium 'Gateway'

In a message dated 4/18/01 3:11:54 PM Eastern Daylight Time, 
dthoma@teleologic.net writes:

<< Claire (or anyone), we have a small manmade pond. Would one just leave this
 Gateway in the pond over winter?  Do you cut it down and sink the pot to the
 bottom, or how do you handle it?  I had (?) a potentially-invasive
 umbrella-type plant (large) in my pond and didn't sink the pot during the
 winter; it shows no signs of life. The pot has usually been anywhere from
 sticking out a couple inches to being under a couple inches over the winter.
 (Everything else in there is waking up.) >>
Diann,

The Gateway plants I have are in the garden and if the season is dry (three 
drought years here until last year's monsoon) they do poorly.  Last year in 
the endless rain which was summer, the Eupatorium was terrific, best I have 
ever seen.

The natural plants which abound in my area including a large patch at the 
swampy edge of our pond (a large natural pond) will grow at the edges.  The 
grow and flower when when the water is low.  The also grow right in the 
water.  In our cold zone these plants do not grow as tall as reported farther 
south, five feet is about it.  I would not sink a pot of any plant in a 
manmade pond and leave it overwinter here.  We freeze two feet or more deep, 
sometimes three or four.  If growing it in my neck of the woods I would pull 
that pot and put it in frame for the winter.

Diann, I would add that Eupatorium is stoloniferous and containing it in a 
pot may be a problem.  It is a very large and vigorous plant.  I have white 
form also, name forgotten this moment, and that is also a native plant.  In 
nature Eupatorium forms large drifts and is always found in wet ditches.  It 
grows better in sun than in part shade.

You will have to decide for yourself what is best for your plant.  I do hope 
you got a good one and the flowers are what "Gateway' is supposed to produce.

Claire Peplowski
NYS z4

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