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Reputedly deer- and rodent-proof, C. fragrans takes it from there: lemon-peel-yellow, sweet citrus-fragrant trumpet blooms open in midsummer prior to the emergence of its blades of green foliage. It especially enjoys the warm, moisture-retentive (but still draining) soil of a pot, and thus can be easily brought inside for the winter in colder climes to be stored in a cool, dry place. Or you can appreciate them as a particularly special annual. From Chile.
Minimum temperature: 20° F