Peony plants make a good addition to a garden as they are easy to grow and easy to care for. Peonies are not a good plant for warmer climates and they require areas with a winter chill in order to thrive and properly bloom, according to Backyard Garden and Patio. After planting in a sunny spot in the garden, take a few simple steps during the year to maintain healthy and flowering peony plants.
Fertilize the soil around the peony plants in early spring or midsummer with low nitrogen fertilizer. Do not allow fertilizer to directly contact the plants.
Mulch peony plants in the spring. This will keep the soil around the peony plants hydrated.
Water the peony plants frequently. Keep soil moist and do not over water.
Stake large peony stalks with gardening stakes to avoid letting the stalks touch the ground. This will also prevent bending and breaking of the plant.
Prune the peony plants after the first frost. Using pruning shears or gardening scissors, cut the peony stems to 3 inches in length. Remove dead leaves and foliage. This will prevent infection to the peony plant as old foliage can harbor fungal diseases, according to Flower Gardening Made Easy.
Add fresh mulch in the winter for protection from the cold.