This week the Peninsula Daily News reported on ninth-grade science classes at Port Angeles High School in Washington who took a field trip to the old Lake Aldwell area along the Elwha River, where a reservoir sat before the dam came down. Working alongside tribal wildlife biologists and a college natural-resources professor, students wrote their own research questions, collected data, and presented their findings on posters. Several groups counted mushrooms as part of their biodiversity work (Peninsula Daily News, Oct. 14, 2026).
You don't need a river restoration site to do the same kind of science. Mid-autumn, after a good rain, is mushroom season almost everywhere, and a simple fungi survey is one of the most engaging (and free) outdoor lessons you can run. Here's how.
First, What Is a Mushroom, Anyway?
A mushroom is only a small part of a much bigger organism. Most of a fungus lives hidden underground or inside wood as mycelium, a web of thread-like cells that breaks down leaves, logs, and other dead material and returns nutrients to the soil. When conditions are right (usually cool temperatures plus moisture), the mycelium sends up a mushroom, which is the fungus's way of releasing spores, a bit like an apple tree producing fruit.
That's a great hook for kids: every mushroom they find is a clue that a much larger living network is right under their feet.
Safety Rules Before You Start
Make these non-negotiable and go over them before anyone heads outside:
- Look, photograph, and draw, but don't pick or taste. Some wild mushrooms are seriously poisonous, and many look alike. A survey is about observing, not foraging.
- Hands off, or gloves on. If students need to look under a cap, an adult can gently tilt it with a stick. Everyone washes hands afterward.
- Stay in the survey area and watch for poison ivy, uneven ground, and stinging insects.
Set Up a Simple Schoolyard Survey
A survey works best when everyone collects data the same way. Try this structure:
- Pick a few sites. For example, a shady tree line, a sunny lawn, a mulched flower bed, and an old stump or log pile. Comparing habitats is where the science happens.
- Mark a plot. Use string and four stakes (or hula hoops for younger kids) to mark the same-sized area at each site.
- Count and describe. Students tally every mushroom in the plot and note cap color, size (use a ruler), shape, and what it's growing on: soil, wood, leaves, or grass.
- Record conditions. Note the date, the temperature, how many days since the last rain, and whether the spot is sunny or shady.
- Repeat. Survey the same plots weekly for a month. Mushrooms appear and disappear quickly, so repeat visits show patterns that one visit can't.
Questions Students Can Investigate
Like the Port Angeles students, let each team choose a question. A few that work well:
- Do more mushrooms appear in shade or in sun?
- How many days after rain do new mushrooms show up?
- Are mushrooms on wood different from mushrooms in grass?
- Does mulch or leaf litter make a difference?
Older students can graph their data and calculate averages; younger students can make picture tally charts or a class "mushroom field guide" with drawings and descriptive words.
Share What You Found
Finish with posters, a gallery walk, or a short presentation. Encourage students to explain what they think their data shows and what they'd do differently next time. That's real scientific thinking. Photos can also be shared on citizen-science platforms (with teacher or parent help) so local experts can suggest identifications.
Bring the Lesson Indoors
Once frost arrives, wild mushroom season winds down, but the learning doesn't have to. Growing mushrooms indoors lets students watch the full life cycle up close: mycelium colonizing its food, tiny pins forming, and clusters of mushrooms doubling in size almost overnight. It's a perfect follow-up that connects what kids saw outside to what's happening inside a fungus.
At Aardvark's Horticulture Adventure, that's exactly why we love our Pink Oyster mushroom grow kit for classrooms and families: it turns the hidden world of fungi into something kids can see, measure, and journal about all winter long. However you explore, we hope your young scientists come away amazed by the network beneath their feet.
Source: Peninsula Daily News, "Student science" (Oct. 14, 2026).
