iiinova — where your digital self keeps evolving

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Theresa Crimmins @theresacrimmins.bsky.social · 08/07/2026

Blueberries are a valuable indicator of climate change response! youtube.com/shorts/fULms... #phenology @usa-npn.bsky.social @npr.org @wbur.org

youtube.com

What one Mass. blueberry bush tells scientists about climate change

YouTube video by WBUR

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Theresa Crimmins @theresacrimmins.bsky.social · 25/06/2026

We had a very early start to spring in the West this year, it sustained, and now we can see that the "end" of spring was reached early to very early across pretty much all L48 states #statusofspring www.usanpn.org/data/maps/sp... @usa-npn.bsky.social #phenology

Maps of the USA National Phenology Network's First Leaf Index, First Bloom Index, and Late Bloom Index.

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USA National Phenology Network @usa-npn.bsky.social · 06/05/2026

Calling all K-12 Educators! We recently received funding to build out new phenology-focused curriculum resources. We want to hear from YOU about your experiences teaching about phenology.🌱

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Zack Labe @zacklabe.com · 28/04/2026

Another check in on spring's arrival for plants blooming. Timing is way ahead of schedule, with off-the-charts early activity across parts of the central and western U.S. Quite a season! Map from @usa-npn.bsky.social: bsky.app/profile/zack... Future projections: doi.org/10.1007/s003...

Map of the contiguous United States showing the spring bloom index anomaly as of April 27, 2026 from the USA National Phenology Network. Many areas are earlier than normal.

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USA National Phenology Network @usa-npn.bsky.social · 22/04/2026

Happy Earth Day! Phenology is an important resource in helping to understand and restore Earth's ecosystems. Help us celebrate by visiting one of your plants or animals and making some observations today! 🌎🌱

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Zack Labe @zacklabe.com · 19/04/2026

Aside from Florida, nearly the entire contiguous U.S. has experienced earlier than average first plant blooms in 2026. Earlier springs can cause longer allergy seasons, accelerate wildfire risk, increase pests/mosquitoes, and lead to less reliable snow-fed water. Map: www.usanpn.org/data/maps/sp...

Map of the contiguous United States showing the spring bloom index anomaly as of April 19, 2026 from the USA National Phenology Network. Many areas are earlier than normal.

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Theresa Crimmins @theresacrimmins.bsky.social · 20/04/2026

Had a little piece post on the MIT Press Reader this morning - always happy to talk about #phenology, why it matters, and how changing phenology might affect us all thereader.mitpress.mit.edu/what-the-cra... @mitpress.bsky.social

thereader.mitpress.mit.edu

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Theresa Crimmins @theresacrimmins.bsky.social · 16/04/2026

The @usa-npn.bsky.social's Late Bloom Index is now live! This map shows where conditions associated with the conclusion of the spring season are being reached early or late. This year, the end of spring is quite early in the SW US; FL is average. www.usanpn.org/data/maps/sp... #phenology

USA National Phenology Network's Late Bloom Index map. This map shows where locations have reached conditions associated with the end of the spring season early or late compared to the 1981-2020 average. The southwestern US and southern Texas have reached this index 1-3 weeks early this year; Florida is pretty much average.

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Zack Labe @zacklabe.com · 06/04/2026

"Spring bloom has been mostly early across the country, with central states seeing conditions for bloom 2-5 weeks early than a long-term average (1991-2020). Denver, CO is 35 days early, and Nashville, TN is 17 days early." Information from @usa-npn.bsky.social: www.usanpn.org/data/maps/sp...

Map of the contiguous United States showing the spring bloom index anomaly as of April 5, 2026 from the USA National Phenology Network. Many areas are earlier than normal.

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Zack Labe @zacklabe.com · 28/03/2026

Spring is arriving across much of the West more than 20 days earlier than average when looking at when plants first leaf-out - even reaching almost to Canada! I'd expect significant ecological impacts from the heat this March. Graphic/data from @usa-npn.bsky.social: www.usanpn.org/data/maps/sp...

Graphic showing the spring leaf index anomaly for March 27, 2026 for the contiguous United States, with spread arriving very early in central and western areas and late in the southeast.

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Zack Labe @zacklabe.com · 22/03/2026

In case you missed our latest science briefing, here is the recording from last week youtube.com/watch?v=gFb8... We checked in on the latest global climate indicators, as well as discussed the ongoing record heatwave across the West & timing of spring onset from the latest @usa-npn.bsky.social data

youtube.com

Climate Central’s Monthly Briefing Highlights: February 2026

YouTube video by climatecentral

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USA National Phenology Network @usa-npn.bsky.social · 20/03/2026

Thank you for joining us for #PhenologyWeek! To finish off the week, we challenge you to make your own phenology wheel for the year! If you make a wheel, please share it with us @usa-npn.bsky.social. Credits: Photo courtesy of Marianne Lancaster

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USA National Phenology Network @usa-npn.bsky.social · 19/03/2026

We're celebrating #PhenologyWeek! Today, we challenge you to find an animal showing flower visitation and observe it in Nature's Notebook. Please share any images with us @usa-npn.bsky.social! Image credits: Dulcey Lima Photography

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USA National Phenology Network @usa-npn.bsky.social · 18/03/2026

We are thrilled to announce our 2025 PhenoChampions, The Bloomingdale Trail Phenology Program! This Program is a shining example of both rigorous data collection and dedicated community engagement. Congratulations! 🎉 Read more about the 2025 PhenoChampions: www.usanpn.org/community/Lo...

A graphic highlighting The Bloomingdale Trail Phenology Program as the USA-NPN's 2025 Pheno Champions. Photo of 13 Program observers.

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USA National Phenology Network @usa-npn.bsky.social · 18/03/2026

We're celebrating #PhenologyWeek! Today, we challenge you to find a plant showing fruits and observe it in Nature's Notebook. Please share any images of your plant with us @usa-npn.bsky.social! Image credits: fruits and ripe fruits by Ellen G. Denny.

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USA National Phenology Network @usa-npn.bsky.social · 17/03/2026

We're celebrating #PhenologyWeek! Today, we challenge you to find a plant showing flowers and observe it in Nature's Notebook. Please share any images of your plant with us @usa-npn.bsky.social! Image credits: flowers or flower buds and open flowers by Dulcey Lima Photography.

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USA National Phenology Network @usa-npn.bsky.social · 16/03/2026

Welcome to #PhenologyWeek! Today, we challenge you to find a plant showing leaves and observe it in Nature's Notebook. Please share any images of your plant with us @usa-npn.bsky.social! Image credits: Breaking lead buds and increasing leaf size: Ellen G Denny, leaves: Dulcey Lima Photography.

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USA National Phenology Network @usa-npn.bsky.social · 14/03/2026

Join our director Theresa Crimmins next Monday, March 16 for her "Watching plants, witnessing change" webinar! Register at www.usanpn.org/news/article..., where you can find other #PhenologyWeek materials!

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USA National Phenology Network @usa-npn.bsky.social · 13/03/2026

Join us on Tuesday for our annual researcher Q&A! Hear from excellent researchers using your Nature's Notebook data. Register at www.usanpn.org/news/article... where you can find other Phenology Week materials!

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Theresa Crimmins @theresacrimmins.bsky.social · 11/03/2026

Parts of MT reaching leaf-out 30+d early this year. This very early spring is largely occurring in locations where things have been trending earlier over the past 4 decades #phenology www.usanpn.org/data/maps/sp... www.climatecentral.org/climate-matt... @usa-npn.bsky.social @climatecentral.org

Map of whether spring conditions are occurring earlier or later than average in 2026. Source: https://www.usanpn.org/data/maps/spring

Map showing whether the start of spring has drifted earlier or later from 1981-2025. Source: https://www.climatecentral.org/climate-matters/earlier-spring-2026?lang=en

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Theresa Crimmins @theresacrimmins.bsky.social · 10/03/2026

Join our Keynote Speaker, Mark Hineline, for "A Life in Season" on March 18, 3pm PT / 6pm ET! In this @usa-npn.bsky.social Phenology Week webinar, Mark will take you through themes that have shaped his life, including #phenology. www.usanpn.org/news/article...

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USA National Phenology Network @usa-npn.bsky.social · 06/03/2026

Join our director, Theresa Crimmins, this Wednesday as she discusses her book, Phenology! Theresa will be in conversation with Dr. Elise Gornish, Director of The Desert Laboratory on Tumamoc Hill.

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Andy Snyder @wxandbiscuits.bsky.social · 03/03/2026

About to add a big stripe of dark red to the @usa-npn.bsky.social maps.

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Zack Labe @zacklabe.com · 03/03/2026

It's been so warm for cities like Denver, Colorado that even phenological spring has arrived there according to the first leaf out! Wow! Graphic from @usa-npn.bsky.social: www.usanpn.org/data/maps/sp...

Graphic showing the spring leaf index anomaly for March 3, 2026 for the contiguous United States, with spread arriving very early in central and western areas and late in the southeast.

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Theresa Crimmins @theresacrimmins.bsky.social · 02/03/2026

I'm excited to join @climatecentral.org's Monthly Climate Brief on Thurs, Mar 19. We'll be talking about (surprise!) what is happening this spring and how you can get involved in tracking signs of the season. We'd love to have you join us! #phenology #statusofspring @usa-npn.bsky.social

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Theresa Crimmins @theresacrimmins.bsky.social · 17/02/2026

The @usa-npn.bsky.social team will be celebrating #Pheology Week Mar 16-20 to coincide with the Spring Equinox. Join us for some fun and educational opportunities to celebrate the start of the spring season! www.usanpn.org/news/article...

Graphic describing the USA National Phenology Network's "Phenology Week" celebration, running Mar 16-20, 2026

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Theresa Crimmins @theresacrimmins.bsky.social · 16/02/2026

All that cold the L48 recently experienced really slowed down the onset of spring. But we are starting to see things pick back up, with extra-early activity in the TX panhandle and through parts of AZ, CA, and up the west coast #statusofspring www.usanpn.org/data/maps/sp... @usa-npn.bsky.social

Map showing whether the conditions associated with springtime biological activity are being reached early or late this year. Online at https://usanpn.org/files/npn/maps/six-leaf-index-anomaly.png

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USA National Phenology Network @usa-npn.bsky.social · 02/02/2026

Punxsutawney Phil has made his annual prediction of what the next six weeks of weather will bring. According to Phil, more winter is on the way! But what does the science say? #GroundhogDay Keep track of Spring's arrival: usanpn.org/data/maps/sp...

Groundhog day graphic showing a map of the US with accumulated temperature accumulation, icons denoting Nature's Notebook observations of leaf out and flowering, and forecasts of weather from NOAA.

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Theresa Crimmins @theresacrimmins.bsky.social · 27/01/2026

Cedar fever got you feeling crummy? @usa-npn.bsky.social is collecting of Ashe's juniper pollen development and release through the NASA-funded PollenCAST project! Your observations of when junipers release pollen in TX will support real-time forecasts of airborne pollen usanpn.org/nn/campaigns...

Male Ashe's juniper (Juniperus ashei) tree by Mike Murphy via iNaturalist (CC-BY-NC).

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Andrew Hipp @andrewlhipp.bsky.social · 27/01/2026

This work by @usa-npn.bsky.social @theresacrimmins.bsky.social strengthens the natural history community and builds our knowledge of organisms' responses to environment. It is an outstanding resource to scientists, educators, naturalists, and enthusiasts of all stripes. And we can all contribute!

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USA National Phenology Network @usa-npn.bsky.social · 27/01/2026

Our 2025 Annual Report is here! Below, excerpts from the report including a Letter from our Director, @theresacrimmins.bsky.social, and highlights of #phenology accomplishments made possible by our partners and observers! Read the full 2025 Annual Report at www.usanpn.org/files/npn/re...

USA National Phenology Network 2025 annual report highlight on how we advanced science via the development of the Late Bloom Index map.

USA National Phenology Network 2025 annual report highlight on the winners of the PhenoChampions award, Mount Auburn Cemetery Citizen Scientists.

USA National Phenology Network 2025 annual report letter from the director.

USA National Phenology Network 2025 annual report infographic on participant and data metrics.

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Mason Heberling @jmheberling.bsky.social · 21/01/2026

excited to hear about the new @usa-npn.bsky.social Nature's Notebook app! phenophase definitions and reference images, new funcationality for advanced traits, adding photos, geolocation tags...and more! #NPNLPLconference #makinguphashtags

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Theresa Crimmins @theresacrimmins.bsky.social · 21/01/2026

And we're off! Spring has started to arrive in the most southern states, and in parts of TX, LA, and MS, it's >two weeks earlier than "normal" (the last 3 full decades). I feel like a broken record, we say this nearly every spring... #phenology @usa-npn.bsky.social usanpn.org/data/maps/sp...

map showing early start to conditions associated with the start of biological activity in the spring in the Lower 48 states of the US

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Mason Heberling @jmheberling.bsky.social · 20/01/2026

Great National Phenology Network conference on local phenology leaders going on this week online. Really enjoying and learning new ideas from the talks so far! usanpn.org/community/Lo... @usa-npn.bsky.social

usanpn.org

2026 Local Phenology Leader Virtual Conference | USA National Phenology Network

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Theresa Crimmins @theresacrimmins.bsky.social · 20/01/2026

Awesome @usa-npn.bsky.social partners Toby Ault and Carlos Carillo at @cornelluniversity.bsky.social released their long-lead forecast for spring; they are predicting a pretty early start to springtime activity in much of the U.S. six-ecrl-24.s3.amazonaws.com/index.html #phenology

map of predicted anomaly in start of spring

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USA National Phenology Network @usa-npn.bsky.social · 13/01/2026

There’s still time to register for our free Local Phenology Leader Virtual Conference happening Tuesday - Friday next week! Meet our speakers, check out the schedule, and register: usanpn.org/community/Lo...

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Theresa Crimmins @theresacrimmins.bsky.social · 12/01/2026

Calling #NaturesNotebook participants! We have an opportunity for 18 observers to be interviewed by undergraduate students at UCLA this spring. The observer profiles will be featured on the @usa-npn.bsky.social website and in future newsletters. Interested? docs.google.com/forms/d/e/1F...

docs.google.com

We have an opportunity for 18 Nature's Notebook observers to be interviewed by undergraduate students in a science writing course at UCLA titled "Science Writing for Public Engagement and Community Sc...

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USA National Phenology Network @usa-npn.bsky.social · 01/12/2025

⏰One week left to sign up to share about your Program at the 2026 LPL Virtual Conference! View the full schedule, learn how you can participate, and register today. usanpn.org/community/Lo... 📷Lili Gama

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USA National Phenology Network @usa-npn.bsky.social · 12/11/2025

Registration is open for the 2026 Local Phenology Leader Virtual Conference! Connect with fellow LPLs, get updates about the new Nature’s Notebook app, hear from phenology experts, and more. View the full schedule, learn how you can participate, and register today. usanpn.org/community/Lo...

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USA National Phenology Network @usa-npn.bsky.social · 09/10/2025

Exciting news - We’re hosting the first annual Local Phenology Leader Virtual Conference the week of January 20-23, 2026! We want you to help shape the agenda! 🌿 Tell us what sessions, speakers, or activities you’d love to see: forms.gle/S1bhDUHJT5aV...

forms.gle

Local Phenology Leader Virtual Conference 2026 Planning Survey

The USA-NPN is currently planning our first annual Local Phenology Leader Virtual Conference, to be held January 20-23, 2026. The LPL Virtual Conference will be an opportunity to connect with fellow...

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USA National Phenology Network @usa-npn.bsky.social · 15/09/2025

Applications now open for our Local Phenology Leader Certification Course, an interactive, online 10-week course on planning and implementing a long-term phenological monitoring program for your organization or community. Course runs Sep 29-Dec 5. Apply by Sep 21. www.usanpn.org/nn/LPLCertif...

A badge with people, a bird, leaves, and a flower with a banner that reads Nature's Notebook Certified Local Phenology Leader.

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Theresa Crimmins @theresacrimmins.bsky.social · 14/08/2025

The 2024 #BulletinAMS State of the Climate Assessment is out today. @usa-npn.bsky.social contributed data & info about how #phenology is changing in the U.S. The timing of plant and animal activity such as leaf-out is a strong indicator of species and ecosystem response to changing conditions.

2024 “first leaf” date anomalies across the United States relative to (a) 2023 and (c) the 2011–20 baseline, estimated using the USA National Phenological Network (USA NPN) extended Spring Index (SI-x) model (

Day of year of spring (green shades) and autumn (orange and yellow) vegetation phenology indicators for (a),(b) Harvard Forest, Massachusetts, derived from PhenoCam (PC), ground observations (GO) of red oak (Quercus rubra), and the USA National Phenology Network (USA NPN) regional-scale means of red oak observations (calculated across the northeastern states of Pennsylvania, New Jersey, New York, Connecticut, Rhode Island, Massachusetts, Vermont, New Hampshire, and Maine, with ±1 std. error shaded)

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weathersullivan.bsky.social @weathersullivan.bsky.social · 04/08/2025

Every March I end up on the phone with Theresa Crimmins of the @usa-npn.bsky.social National Phenology Network talking about the advent of spring. So when she said she wrote a book, I had to get it and add it to my summer list of books by people I know: www.barnesandnoble.com/w/phenology-...

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Theresa Crimmins @theresacrimmins.bsky.social · 14/06/2025

@jeremyclark.bsky.social helped the @usa-npn.bsky.social explore options for generating commercial revenue. It's tough for programs exist to serve the public. I hope our experience can help other programs suddenly struggling with $ loss. agupubs.onlinelibrary.wiley.com/doi/10.1029/...

agupubs.onlinelibrary.wiley.com

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Theresa Crimmins @theresacrimmins.bsky.social · 12/06/2025

It's not uncommon for spring to start out early and then slow down, or vice-versa... see where either of those sequences of events occurred in the L48 states this past spring: www.climate.gov/news-feature... #phenology @usa-npn.bsky.social @climate.noaa.gov

climate.gov

First blooms of the 2025 spring season were earlier than average across most of the United States

According to a long-term index of flower timing, most U.S. areas saw flowers emerge earlier than average, except for a few, mostly coastal areas.

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Theresa Crimmins @theresacrimmins.bsky.social · 28/04/2025

I invite you to track seasonal changes in plants and animals -- #phenology -- in your yard, to support science, and more importantly, because it is good FOR YOU. Excited to share my #TEDxUofA talk from last October: youtu.be/3l0fMlv2-5Q

youtu.be

Observing the Outer World to Change Our Inner One | Theresa Crimmins | TEDxUofA

YouTube video by TEDx Talks

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USA National Phenology Network @usa-npn.bsky.social · 24/04/2025

Some updates from our Green Wave campaign! 🌱💚

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