Please Report These Test Garden Events

Citizen scientists are observing Tulip Test Gardens planted across the Northern Hemisphere and reporting their sightings.
tulip garden planting
Image Katharine Holmes

Tulips Planted
Report after you have planted your tulip Test Garden. Every test garden reported PLANTED will show up on the map as a brown square at the garden site. Remember, because this is a scientific experiment, only bulbs that were planted according to the instructions can be part of the official study.

emerging tulips
Image Terri Bickmore

Tulips Emerge
Report tulips EMERGED at the first sign of the tulip leaves breaking the ground. When gardens are reported EMERGED a green triangle appears on the map at the garden site.

"Four out of ten have emerged. Tulips are 1 inch out of the ground," wrote students in Iowa.

Monarch butterflies at overnight roost.
Image Gayle Kloewer

Tulips Bloom
Report your garden BLOOMING when you see the first tulip fully open with the pistils and stamens visible. Red dots appear on the map at the site where gardeners have reported their tulips BLOOMIMG.

"The first two of our seventy five bulbs have bloomed. More are ready to bloom in the next couple of days," reported students from Michigan.

investigating the tulip bulb
Image Ilviyye Tahirova

Other Observations
Throughout the experiment students have the opportunity to share many of their investigations. Predictions made early can change as students observe weather and climate in their own gardens and across the Northern Hemisphere. Report and share your OTHER observations.

"We planted bulbs 9 inches and 5 inches deep to see how planting depth affects emergence," wrote students from Missouri.

watching the arrival of spring
Image Journey North

Report Your Sightings
Your sightings help climate scientists to identify shifts in long-term phenology trends. They also help scientists predict changes that may come in the years and decades ahead, which will help all of us understand, respond, and prepare for our changing climate.