A family member recently bought a small farm East of Colorado Springs. The previous resident was a renter, and he left behind part of his grow, around 10-15 plants. I don't know what to do with these plants to help them fulfil their potential. My family member isn't anti-canna by any means, but doesn't want the plants, so they're mine now. The grow is outside in the ground, no pots, but the soil is very good - it is a functional farm after all. The plants look healthy, most are around 30-36 inches tall +/-, slight yellowing of some of the lower leaves. Here's my big concern: The days are warm, but the nights are cold. I've never grown before, so I don't know what the tolerance is for cold overnight temperatures. I'm afraid the good growing season is ending, and the buds aren't mature yet. I don't have any pictures, but the hairs are still white, though they are curling in. Also, I live about an hour away, so I can't tend the plants every day. I need any advice I can get about the best way to care for the plants before harvesting. Thanks in advance!