botanical garden - a facility where trees and shrubs are cultivated for exhibition. arboretum. facility, installation - a building or place that provides a particular service or is used for a particular industry; the assembly plant is an enormous facility.
Keystone, CO Weather. The average temperature of Keystone is 35.80Â°F, which is much lower than the Colorado average temperature of 46.26Â°F and is much lower than the national average temperature of 54.45Â°F. Historical Weather.
How long is a Keystone Exam administration?There is no time limit for a student to complete a Keystone Exam. Each Keystone Exam should take the typical student 2 to 3 hours to complete. There are two modules on each test, and each module (or Test Session) of the Keystone Exam should take 1 to 1.5 hours to complete.