Can you cold stratify seeds for too long? (Updated with my results!)

Blueberry Acres

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Update!
We have three sprouts! :weee

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Branching Out

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My internal alarm clock went off at 4am today, so I watched a few YouTube videos on starting hardy annual flowers from seed while I had my coffee. In this one Dave Dowling provided tips on starting echinacea, echinops, and yarrow from seed:

This winter I had ordered some of those varieties, so even though it was still dark out I decided to start a bunch of perennial flower seeds. New to my garden for this year are Blue Glow Globe Thistle, Rudbeckia Hirta Prairie Sun, and Magnus Superior Echinacea. There are also seeds of a few flowers that I have had success growing before, including Arizona Gaillardia (Red Shades and Apricot) and Salmon Queen Scabiosa. It seems that seeds of perennial flowers seem to appreciate vernalization so I placed the seeds under damp paper towels and chilled them in the freezer for an hour. Then I moved them to the fridge, where they will cool their heels for a week or two until I can plant them. I had hoped to start some Little Miss Sunshine Goldenrod too, but evidently I winter sowed the whole packet outside in a milk jug in late November. Now I am wishing that I had held a few seeds back, as insurance. What was I thinking?? 🙃
 

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Blueberry Acres

Garden Ornament
Joined
Jul 30, 2023
Messages
130
Reaction score
346
Points
85
Location
Rhode Island
My internal alarm clock went off at 4am today, so I watched a few YouTube videos on starting hardy annual flowers from seed while I had my coffee. In this one Dave Dowling provided tips on starting echinacea, echinops, and yarrow from seed:

This winter I had ordered some of those varieties, so even though it was still dark out I decided to start a bunch of perennial flower seeds. New to my garden for this year are Blue Glow Globe Thistle, Rudbeckia Hirta Prairie Sun, and Magnus Superior Echinacea. There are also seeds of a few flowers that I have had success growing before, including Arizona Gaillardia (Red Shades and Apricot) and Salmon Queen Scabiosa. It seems that seeds of perennial flowers seem to appreciate vernalization so I placed the seeds under damp paper towels and chilled them in the freezer for an hour. Then I moved them to the fridge, where they will cool their heels for a week or two until I can plant them. I had hoped to start some Little Miss Sunshine Goldenrod too, but evidently I winter sowed the whole packet outside in a milk jug in late November. Now I am wishing that I had held a few seeds back, as insurance. What was I thinking?? 🙃
Fun!
 

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