"We were beginning to think we wouldn't see any tulips this spring."

How fast do tulips grow? Test Gardens are good for studying the influence of temperature and precipitation on plant growth.

Fun and hard-learned lessons in the tulip Test Garden.

Spring weather is always variable. Test Gardens emerge, snow and storms arrive, and somehow the tulips survive it all.

Warm spring temperatures brought young citizen scientists outside to observe tulip growth this week.

Students are celebrating spring in the Test Garden! Observe your tulips closely and discover their beauty and function.

Tulip emergence leads to big, beautiful blooms as spring progresses. Brush up on flower anatomy this week and be ready to look at your blooms with the eyes of a botanist.

Questions are springing up from careful observations in Test Gardens across North America. What creative ideas do you have for solving them?

Warm weather can turn cold in a snap in March! Can tulip plants handle early spring's up and down weather?