Answer: Your spireas are probably still becoming rooted and established and will not be blooming to their full potential this year. They may be undergoing some transplant shock, or possibly some heat stress since they do not yet have their full root systems, or they may have been pushed to bloom earlier than normal prior to purchase. This can cause the blooms to fade faster than they might ordinarily. Also, temperature, soil type, and moisture levels can all affect color to some degree. Once the first bloom flush has faded, go ahead and shear them off lightly to deadhead. If conditions are favorable they should rebloom.
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