Hydrangea macrophylla ‘Horwack’ Pistachio

('Pistachio' Bigleaf, Hydrangea)


$29.99


Hardiness Zones:

 5a  5b  6a  6b  7a  7b  8a  8b  9a  9b

Quick Overview:

Hydrangea macrophylla ‘Horwack’ (trade name of PISTACHIO) is a compact mophead cultivar that grows to 2-3? tall and to 3-5′ wide. It typically blooms on old wood (flower buds are produced the previous fall and overwintered) in late spring with a repeat bloom on new wood from summer often into fall if spent flowers are regularly deadheaded. Each inflorescence (to 5" diameter) is a large globose cyme (mophead) that is covered with showy, sterile florets and a few fertile florets. Each sterile floret sports a variety of interesting and attractive colors. Flowers open green tinged with chartreuse (pistachio colors), but as they develop the center of each flower turns scarlet red to violet red tinged with chartreuse-green and a small blue eye. Leaves (to 6" long) are glossy green. U. S. Plant Patent Applied for (PPAF).

Out of stock

Description

Best grown in rich, medium moisture, well-drained soils in part shade. Tolerates full sun only if grown in consistently moist soils. Soil pH affects the flower color (blue in highly acidic soils and lilac to pink in slightly acidic to alkaline soils). Add aluminum sulfate to the soil to make the flowers bluer or add lime to the soil to make the flowers pinker. Begin soil treatments well in advance of flowering, as in late autumn or early spring. Plants generally need little pruning. If needed, prune immediately after flowering by cutting back flowering stems to a pair of healthy buds. Prune out weak or winter-damaged stems in late winter/early spring. Best to mulch plants year-round with 3" of shredded bark, peat or compost. Winter hardy to USDA Zone 6.

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Kiefer Nursery: Trees, Shrubs, Perennials
Hydrangea macrophylla 'Horwack' Pistachio
Hydrangea macrophylla 'Horwack' Pistachio - Image 2
Hydrangea macrophylla 'Horwack' Pistachio - Image 3
Hydrangea macrophylla 'Horwack' Pistachio
Hydrangea macrophylla 'Horwack' Pistachio - Image 2
Hydrangea macrophylla 'Horwack' Pistachio - Image 3
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