Is it to late to grow perenials in late summer...?
Question:... in your green house, then plant them outside? will they still come up next year(will they servive the winter)? i live in canada, bc. thanks:)
Answers:
Yes you can plant anytime. Most perennials recommend being planted by the end of June. I am planting right now and have some up but they are small. They just need to get some roots to overwinter. I only have one concern. How hot is it going to be in your greenhouse in late summer. I know my greenhouse get extremely hot in the summer even though i have fans and a good exhaust system. I have planted outside on some wire racks installed under a translucent roof of a shelter. Just something for you to think about. It is my first year trying in summer so we will see!
you can plant them anytime, keep them well watered while they germinate. Yes, they will be fine and bloom at the appropriate time next year.
They will need enough time after planting out to acclimate and grow some roots into the surrounding soil. In my area, USDA zone 4a, I would not put transplants like that out after early September. I would also protect the transplants the first winter. Cover crowns with evergreen branches or leaves.
Good luck.
I have planted perenials mid summer and fall and had no particular problems in Colorado, probably more harsh than your winter.
I always buy a few perennials in the Fall. They are on discount and are easily transplanted then. They will definitely survive the Winter. Just to be sure,add a few leaves around them . In the Spring gradually remove the leaves as it warms up.Fall is a good time to plant trees as well.
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