When to plant Panicle Hydrangea?

Panicle hydrangeas thrive in full sun or partial shade, though flowering is most prolific in a spot that receives at least four to five hours of direct sunlight daily. They tolerate a wide range of soils—loam, clay, or peat-based—but the ground must be moisture-retentive yet free-draining. Avoid very dry, sandy sites. Before planting, dig a hole roughly twice the width of the root ball and work in plenty of organic matter such as garden compost or well-rotted manure to improve structure and water retention. Plant in March, April or May, or wait until September or October if you prefer autumn planting. Container-grown shrubs establish well in either window. Set the plant so the top of the root ball sits level with the surrounding soil; planting too deep can lead to stem rot. Space plants 200 cm apart to allow for their mature spread of 150–250 cm and good air circulation, which helps reduce fungal problems. After planting, water thoroughly to settle the soil around the roots and eliminate air pockets. Apply a 5–7 cm layer of organic mulch—bark chips or garden compost—around the base, keeping it a few centimetres clear of the stems to prevent rot. This mulch conserves moisture and suppresses weeds during establishment. Water regularly through the first growing season, especially in dry spells, until the root system is well developed. Panicle hydrangeas are very hardy (zone 3a–8b) and need no winter protection in temperate Europe, but young plants benefit from consistent moisture in their first year.