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Fortnight Lily

Posted by dee_anne_lee 3b Carstairs, Albert (My Page) on
Wed, May 16, 07 at 15:24

I have Fortnight Lily seeds, but they are for Zone 8. I live in Zone 3b. I do not expect them to survive our winter here, however I am wondering what you think the likelihood of them growing here for summer months would be if they were started in the greenhouse.

I would appreciate any input on this, they look like absolutely gorgeous flowers and are supposed to seed like crazy. I am sort of hoping that they might work like a biennial (but I'm not holding my breath).

Here is a link that might be useful: Fortnight lily photo and blurb

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RE: Fortnight Lily

They do seed like crazy! But they are not particularly weedy. Think of them as being similar to Iris stylosa but flowering over summer and you have some idea of the conditions and root type.

A fairly loose, even stony, soil with some added compost to hold moisture(not too rich - leaf mould is great) and good sunlight. If you have a continental type summer with dry conditions and high temperatures you may find that some shade over the mid day is appreciated, and some water.

In this zone the plant stays evergreen over winter so you can't count on full dormancy to carry you over the darker and colder days. We usually get a lot of rain over winter, too - far more wet days than frosty. Day temps are usually above 8C.

If you can manage to keep the plant cool-ish, freely drained but with reliable moisture/humidity and, perhaps, enough lighting to give around 6 hours during the day.

If you're growing in a pot do your best to avoid letting it get rootbound. They seem to take ages to 'leave the pot' and grow on in the ground otherwise.

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