Spireas are fast growing shrubs, making them highly desirable for quick fill-in plantings, massing, hedges and foundation plantings. Periodically, they can be pruned to the ground in fall or spring to clean up overgrown plants. Smaller spireas can be pruned as needed for shape and size, or to remove dead stems each year. Two to three years after planting, begin thinning the center branches of tall spireas by removing 1/3 of the thickest stems as close to the ground every year. Mulching with wood chips or shredded bark will help retain soil moisture. Once plants are established, they are fairly drought tolerant. After planting, provide regular water during the first year so plants develop a good root system and can become well-established. Spireas tolerate poor soil, but will do their best in friable (loose or non-compacted), well-drained soil. Plants also flower better when provided adequate moisture throughout the year. Plants in shadier location tend to become taller and open, with fewer flowers. nipponica ‘Snowmound’, but a superior replacement for the original Vanhoutte spirea.Ĭhoose a sunny location so plants stay more compact and develop a good show of flowers.
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