The pansy is one of the most popular landscape flowers. Although typically grown as annuals, pansies are perennials in temperate climates. In cold-winter regions, pansies bloom best in spring and summer, but grow better in fall and winter throughout the hotter climates. Pansies cannot tolerate hot weather or freezing temperatures. Pansies grow up to 9 inches tall and wide, blooming in a range of colors and often multiple-colored blooms with "face-like" markings. To grow and take care of pansies, consider your climate before selecting a planting location.
Choose a planting site that has full, direct to partial sunlight exposure and loose but not too sandy soil. If you live in a climate with hot summers, plant the pansies where they'll have some protection from the afternoon sun to prevent them from wilting in the heat.
Plant the pansies in spring after the last frost if you live in a cold-winter climate, or in fall about six weeks before the first expected frost if you live in a mild-winter region. Mix into the soil an all-purpose 10-10-10 NPK formula fertilizer at the time of planting, according to the recommended dosage rate on the label.
Plant the pansies at the same depth as they were planted in the nursery containers, spacing them 7 to 12 inches apart. Water the newly-planted pansies generously to wet the soil to a depth of at least 6 to 8 inches.
Water your pansies deeply and thoroughly to wet the soil down to the root area once or twice each week when rainfall is less than 1 inch. Water the pansies from spring through fall, watering in the morning or midday but not in the afternoon or evening.
Feed your pansies about one week after planting them, in late fall and again in March. Feed the pansies once every three to four weeks while they're actively growing. Apply 1 tsp. of an all-purpose 10-10-10 NPK formula fertilizer per 1 square foot of flower bed.