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Place the plant in the hole and backfill with the excavated soil. Water thoroughly to settle the soil. Cover with a ” layer of mulch, keeping it away from the stems.

Spacing: Space spirea plants 2 to 15 feet apart, depending on the expected mature width of the plant and the application. Jun 20, Position your spirea in an area with well-drained soil, as they do not like wet feet. How to Care for Spirea Bushes. Once planted, the care of spirea requires a minimal time investment. Adding mulch around the plant will help retain moisture and regular summer watering will promote healthy blooms and growth.

Look to your plant’s tag for specific recommendations. Dig a hole slightly deeper than the root ball and 2 times wider. Remove the plant from the nursery pot and loosen the soil around the roots. Set the plant in the hole with the top of the root ball at or slightly above soil level. Mar 02, You should actually prune your spirea more than once a year, at least twice.

Give it a good trim after it flowers in the spring by cutting back the tips of the stems to the top leaf bud. This removes the dead blossoms and also may trigger a second blooming and new leaf growth. You can also shape the shrub at this time. Mar 01, The perfect time to plant spirea is just after the last frost in spring or right before the first frost in fall.

Follow the usual guidelines for planting a shrub and dig a hole two times as wide as the container or rootball, and just as deep. Refill the hole and cover with a two-to-three-inch layer of mulch out to the drip bushdig.barcal Name: Spiraea spp.