Re: Comments on these perennials appreciated - Knautia
- To: perennials@mallorn.com
- Subject: Re: Comments on these perennials appreciated - Knautia
- From: B* C*
- Date: Thu, 18 May 2000 02:45:55 EDT
Claire, I believe that the Gardens North catalogue says that it is hardy to
zone 3, and that there are people growing it in Regina, Saskatchewan. Last
time I looked Thompson and Morgan was still claiming it as only hardy to
zone 6. It is certainly a tough plant, but then in Europe it's a common
weed, or was in the days before herbicides were used in crop fields.
I'm already growing Scabiosa ochreleuca in my garden, which gets pretty
close to 4 ft for me although it's so pale a yellow it looks white. I'm sure
I could fit the Cephalaria in somewhere. I'm giving my plume poppies a bed
of their own in place of a shrub this year, and I would probably put it in
with them.
I believe we had one night of frost this month but there's little chance of
more and if it hadn't been such a dry year last year things would be a lot
more advanced than they are.
Bob Campbell
USDA 4.
>One thing not mentioned about knautia and appreciated by me in the past
>three
>years of NYS drought is that this plant will grow in very dry poor soil.
>Knautia is hardy in zone 4. On self seeding has anyone notice that this
>is
>a big self seeder year. Our beds are filled with everything in great
>numbers. I do not recall seeing seedlings in this number in previous
>years.
>
>Now that Cephalaria - that is a great BIG plant with flowers not much
>larger
>than the discussed knautia, a pale yellow. I saw it growing in the
>perennial
>gardens of Montreal Botanic and tried it one year. It reaches over six feet
>and is quite rangy. I should think you might combine it with some other
>tall
>plant, maybe purple leaved cannas.
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