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experiment: window box planted now?

St. Louis County, MO(Zone 5a)

While filling containers yesterday I had extra potting mix. I spied my plastic window box liner and decided to do an experiment. I filled it with fresh soil, and popped it into my plastic bin with a lid. Today I'm going through my seeds to decide what I want in the box. If this works, all I will have to do in spring is take it out of the bin and it will be ready to go. If this works I will be picking up more liners when they go on sale. Has anyone tried this before? C4

Cincinnati (Anderson, OH(Zone 6a)

Well, a couple of years ago I wintersowed seeds in my patio pots and containers and covered them with plastic and it worked just fine...slow to bloom in the summer, but I had other pots in place until they were ready...

Calgary, AB(Zone 3a)

I did the same thing as tabasco - I winter sowed dwarf Morning Glories in patio containers. I covered them with really heavy opaque plastic (not saran wrap), wrapped a rope around the pot to keep the plastic on, and poked holes in the plastic. Worked like a charm.

However, once the seedlings got to be tall, it was still too cold to expose them (end of April), so I ended up building them a little teepee with some 1" x 1" pieces of wood and plastic until it was warmer.

This is the teepee...

Thumbnail by Grow_Jo
Calgary, AB(Zone 3a)

And this is what they look liked later in the summer (pardon my toes)...

Thumbnail by Grow_Jo
Kirkland, WA(Zone 7b)

Grow_Jo: when did you sow? I realize you're in a colder zone than I am, but I'm curious nonetheless.
I have done the teepee too, but more to keep the excess rain out as we aren't hurting for that here.

Cathy - I have often not had time to deal with all the containers in late autumn. I do remove the top few inches of soil, mix that with leaves & materials that are on hand, replace & they're ready the following spring. I start seeds in these in late winter. Otherwise they get perennials in them for overwintering, which has been successful, so far. No bin to put them in, but the teepee works great. If you run out of room in the bin, you might try the teepee.

Calgary, AB(Zone 3a)

Hi Katye,
I sowed those Morning Glories on March 30th. They germinated on April 14th. You lucky ducks in warmer zones could probably do them much earlier...

I think this whole winter sowing thing is about experimentation anyway; if I were you Cathy, I would just go ahead and give it a try....


St. Louis County, MO(Zone 5a)

Thanks for the encouragement, someday this week I'll plant them and cross my fingers! C4

Cincinnati (Anderson, OH(Zone 6a)

Pretty pic of your pot, Grow Jo! The plastic cover idea is a nice way to get started earlier. I had to wait a long time for my MGs to flower.

Cathy, I won't be planting my morning glories until closer to the last frost date for our area-- around April next spring. That's when I wintersow all my tender annuals (other than the ones I want to bloom earlier in the summer which I start indoors under lights.) because I don't rig up a cloche as Grow Jo does. The plastic cloche will no doubt help get a jump start on spring, too.

I start my wintersown perennials in January or February. Many gardeners make a first limited sowing of perennials seeds around December 21 as a kind of celebration of the solstice, but I personallly find it easier and more convenient and less chance for disasters if I wintersow the perennials out in February and the annuals out in April and May...

I will be interested in your results!

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