Plants' fragrance is designed to attract insect pollinators, explains Mike Brunswick, field reporter for HGTV's The Great Indoors, and often very fragrant blooms are short-lived. The grapefruit tree (figure A) produces among the most fragrant of flowers, although the sweet scent isn't long-lasting. Gardenias (figure B) require excellent drainage yet must be kept damp at all times. Their roots resent disturbance. Plants are heavy feeders and require fertilizer every two to three weeks in the growing season. Miltoniopsis orchids (figure C), called pansy orchids because of their flat flower shape, are native to Central and South America. All Miltoniopsis require cool nights to flower: 55 to 60 degrees Fahrenheit. Daytime temperatures should be below 80. Keep the potting medium moist except during gray winter days, and provide high humidity.
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