Small Bulbs, Big Discoveries
September 9, 2016, Mary Hosier

How can a handful of tulip bulbs help us understand seasons and climate across the Northern Hemisphere?

blooming tulips
Patrick Hazelton

Tracking Change with Tulips
Each fall, people across the Northern Hemisphere plant Red Emperor tulips to help monitor seasonal change in a scientific way. In the spring, when the plants emerge and bloom, gardeners report their data to the maps. One garden at a time, the relationship between climate, geography and the greening of spring is revealed.

Tracking a Sign of Spring
Exploring Climate and Plant Growth Around the Globe


Map and Journal

After planting: Report to the map.

Journey North Climate Garden Map: North America Journal
  Fall Map
report | map | list

Spread the Word: Free Bulbs

  • Contest: Invite a new gardening partner and enter the contest for free tulip bulbs.
Launch page for tulip garden contest


Next Update October 12, 2016