When to plant Yarrow 'Coronation Gold'?

Achillea 'Coronation Gold' thrives in full sun and well-drained soil, making it ideal for sunny borders, gravel gardens, and prairie-style plantings. It tolerates sandy, loamy, and chalky soils but will not perform well in heavy clay or waterlogged ground. If your soil is heavy, dig in plenty of grit or horticultural sand before planting to improve drainage. Plant container-grown specimens in March, April, or May for establishment before summer, or in September and October to take advantage of autumn rains and allow roots to settle before winter. Space plants 45 cm apart to allow for their mature spread of 40–60 cm and good air circulation, which helps prevent mildew. Dig a planting hole roughly twice the width of the root ball and the same depth. Loosen the roots gently if they are pot-bound, then position the plant so the crown sits level with the surrounding soil—planting too deep can lead to rot. Backfill with the excavated soil, firm gently with your hands, and water in well to settle the roots and eliminate air pockets. After planting, water regularly for the first few weeks until the plant is established, especially if conditions are dry. Once settled, Achillea 'Coronation Gold' is drought-tolerant and requires little supplementary watering. A light mulch of gravel or grit around the base suits this plant better than organic mulch, which can retain too much moisture around the crown. Avoid rich, moisture-retentive mulches that encourage soft, floppy growth prone to flopping.