The Hydrangea Double Dutch Alkmaar produces masses of beautiful blue double-flower heads, densely packed out so very eye-catching. Hydrangea Double Dutch Alkmaar is a great plant to stand out in patio pots and borders with its mesmerising colour displayed in its blooming clusters. Like all Hydrangeas the intensity of the colour is dependent on the soil pH. Hydrangeas like to be grown in rich moist soil, and to give them the best start, stir in rotted manure or garden compost thoroughly. Alternatively they can be planted up in containers in ericaceous compost. Product Specifications: Position: FULL SUN OR SEMI/DAPPLE SHADE Height: Up to 120cm (47”) when fully established Spread: Up to 120cm (47”) when fully established Supplied as 1 x 14cm Pot. Images shown are for guidance only of the expected results from plants upon maturity. Different growing conditions might vary results. Image may be included for illustration of supply but can vary due to seasonality changes (e.g. deciduous plants lose leaves in colder months).