Growing Degree Days

Measuring the Amount of Heat
Required For Our Tulips to Grow and Bloom

DATE	Today's Temperature			Base Temp. for Tulips	Today's Growing Degree Day Value		TOTAL Growing Degree Days
	Hi	Lo	Av		(Av. Temp) - (Base Temp)	= GDD
				40° F

• Link to Instructions
• Link to SAMPLE Growing Degree Chart
• Back to Spring Fever Lesson