Fall Blooms

How to make observations of late blooming flowers


Season for activity: Late Summer and Fall

Time commitment: 10 minutes each time you see a unusually late bloom

Materials needed:

  • Smart phone or tablet with a camera
  • An account with the Local Environmental Observers (LEO) Network (sign up here)
  • the LEO Reporter App downloaded on your device

Observing Directions:

1. When you see a late blooming flower, open the LEO Reporter app and sign in.

2. Hit "the "Make Observation" button at the bottom of the map screen.

3. Select "Seasons" and "Plants" for the category for your observation.

4. Title your headline "Late Bloomer" and then the type of flower it is. For example, "Late Bloomer - Wild Rose"

3. Select the date and location of your observation using the app.

4. Please take at least two photos of the late blooming flower for the post, one up close so that the species can be identified, and one approximately 3 ft away from the flower, so we can get a sense of the proportion of flowers that are blooming on the plant and nearby plants. Add these images to your post as prompted by the app.

In the notes, please write an estimate of the percent of the buds on the plant that have popped open in the area. To do this, imagine a square area with the late blooming flower at the center that is the length and width of your arms fully spread out. What percent of the buds in the square have popped: less than 1%, 1-5%, 6-10%, greater than 10%?

Make other notes you think are relevant in your post, like unseasonable weather, pollinators or insects being observed, or proximity to trails or buildings.

All observations of unusually late flowers are welcome, but of particular interest are observations of August-October flowers on the following species :

5. Review and submit your observation.


More information on how to submit a LEO observation can be found on the LEO website.


How will the data be used?

This effort is part of a larger project funded by the National Science Foundation. The data from your observations and observations of volunteers across Alaska will also allow us to determine if there are any geographic or climatic patterns in late blooming plant observations.

These results will also be supported by 2 complimentary investigations: 1) lowbush cranberry buds collected throughout the state and analyzed under a scanning electron microscope at the University of Connecticut; and 2) an open top chamber experiment being conducted in the Bonanza Creek Long Term Ecological Research Station at UAF where some small woody plant species are getting artificially warmed and some are not to try to isolate changes in temperature as a mechanism for pre-formed bud developmental rates.