Home flower gardeners in northern latitudes like to grow plants that flower only in the spring or flower only in the late summer and fall.They are planting flowers that are most sensitive to _____.

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Plants that flower in response to night length are called "short-day" or "long-night" plants. They require a certain amount of uninterrupted darkness in order to begin their flowering process. Therefore, home gardeners in northern latitudes prefer to grow these types of plants in the fall when the nights are long, as this prompts them to flower. In contrast, "long-day" or "short-night" plants require shorter periods of darkness and therefore are most sensitive to phototropins, which regulate the response of plants to light. Temperature differences, water and nutrient availability can also influence plant growth and flowering, but they are not the most important factors for determining when a plant flowers in northern latitudes.

Home Flower Gardeners in Northern Latitudes Like to Grow Plants