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Why do lady's slippers bloom earlier in Canada than in Minnesota?

 Two pink lady-slipper orchids, with bright pink slippers
Lorie Shaull
/
Special to KAXE
Two pink lady-slipper orchids are seen at the Warren Nelson Memorial Bog within the Sax-Zim Bog southeast of Hibbing.

In the phenology report for June 17, 2025, KAXE Staff Phenologist John Latimer discusses nesting turtles and how northern plants adapt to a short summer season.

This week, John Latimer speaks about a seasonal pattern I was only vaguely aware of: The tendency for plants 'up north' to flower and fruit earlier than the same species of plants 'down south.'

With a shorter growing season, lady's slippers and blueberries in northern regions have to move quick to flower, fruit, and store energy before fall arrives.

Down south, there's a bit more time: The plants can take the time to gain energy to create more attractive flowers and more well-provisioned seeds.

Learn more about the phenomenon (and much more) in this week's phenology report!

Topics

  • Introduction (0:00-0:27) 
  • Flies and mosquitoes (0:27-1:38) 
  • Turtles laying eggs (1:38-4:35) 
  • Wildflowers (4:35-12:28, 16:47-17:10) 
  • Why do things bloom earlier in the North in the summer? (5:08-7:28) 
  • Shrubs (12:28-14:42) 
  • Spittlebugs (14:42-16:17) 
  • Ruffed Grouse in a dust bowl (16:17-16:47) 
  • Nesting loon (17:10-18:12) 
  • Conclusion (18:12-18:59) 

What have you seen out there? Let us know: email us at comments@kaxe.org or text us at 218-326-1234.

That does it for this week! For more phenology, <b>subscribe</b> to our Season Watch Newsletter or visit the Season Watch Facebook page.

Funding for this project was provided by the Minnesota Environment and Natural Resources Trust Fund as recommended by the Legislative-Citizen Commission on Minnesota Resources (LCCMR).

Charlie Mitchell (she/they) joined KAXE in February of 2022. Charlie creates the Season Watch Newsletter, produces the Phenology Talkbacks show, coordinates the Phenology in the Classroom program, and writes nature-related stories for KAXE's website. Essentailly, Charlie is John Latimer's faithful sidekick and makes sure all of KAXE's nature/phenology programs find a second life online and in podcast form.


With a background in ecology and evolutionary biology, Charlie enjoys learning a little bit about everything, whether it's plants, mushrooms, or the star-nosed mole. (Fun fact: Moles store fat in their tails, so they don't outgrow their tunnels every time conditions are good.)