Colorado is what geographers call a high, semi-arid steppe. As with similar places in the Andes and Himalayas, humidity in the Rocky Mountains is low and rainfall is infrequent. Winds are drying and temperatures can fluctuate as much as 90 degrees in a 24-hour period. Along the Front Range, it can snow in May or September.
Unlike people, plants don't have the advantage of finding shelter to protect them from climate extremes. Plants must be tough to survive here, and gardeners must be astute enough to help them along. Your choice of plants, locations for planting and techniques for manipulating their growing environment will make the difference between gardening success and failure.
Hints for growing roses in high altitude:
Choose rose varieties that are recommended for the high altitude climate.
Become a Denver Rose Society member and receive the "Growing Roses In Colorado" booklet.
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