The Q&A Archives: Yarrow

Question: Why is my yarrow sprawling? It has always done so well for past two years. I think maybe it needs dividing but the yarrow I bought last year is sprawling also. The foliage is evergreen here in zone 7. Would it be affected by not cutting the foliage back? Should I cut the foliage back? Some of the flowers are laying flant on the ground. I know they get enough sun.

Answer: Yarrows are low-maintenance plants that grow well with little care. Plant them in full sun in average to poor, well-drained soil. Plants tend to "flop" over when the soil is too rich. I'd prune them back now and then hold off on fertilizer which tends to make these plants lush and green with new growth, which causes the weak stems.

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