Hydrangea are generally one of the easiest shrubs to grow, but unlike most, this particular variety is very pH sensitive, meaning that it will thrive in any soil you provide, but the colour of the flowers will vary. On alkaline, a compact lacecap with deep red flowers will emerge, whereas given an acidic soil, deep reddish-mauve flowers will take the stage. Hydrangea macrophylla 'Kardinal' is a reliable, hardy, deciduous shrub with dark green leaves on strong, sturdy stems. Flowers buds form in early summer and blooms will last until early autumn. A worthy winner of an RHS AGM. Height & Spread: 1.5m (5').
1 X 5 Litre Potted Hydrangea Plant (T67999) 2 X 5 Litre Potted Hydrangea Plants (T68000P)
Leave the faded hydrangea flower heads in place until the new buds swell in spring to protect the delicate buds from frost damage. Prune after flowering, reducing the stems to restrict their growth to the available space and to improve the shape of the plant. After pruning hydrangeas, apply a mulch of well rotted manure or compost around the base of the plant. Caution: Contact with hydrangea foliage may irritate the skin and eyes. Harmful if eaten.
Hydrangea macrophylla prefers a position in sun or semi-shade, with shelter from cold, drying winds. Grow hydrangea plants in any rich fertile, moist soil. Improve the soil prior to planting by adding with plenty of well rotted manure or garden compost, ensuring that it is mixed in thoroughly and deeply. Alternatively, plant Hydrangea macrophylla in patio containers in ericaceous compost.
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