Bigleaf hydrangea (Hydrangea macrophylla 'Pia')
hy-DRAIN-jah mak-roe-FIL-lah
Synonyms:
'Pink Elf'
Genus:
Hydrangea
'Pia' is a dwarf Hortensia (or "mophead"), with globe-shaped flower heads made up of deep rose, 4-inch-wide flowers.
Care:
Grow in moist, but well-drained soil, in sun to partial shade. Provide shelter from drying winds. 'Pia' flowers on the previous season's wood. It can be maintained by cutting back just to the first pair of buds beneath the old flower in spring.
Propagation:
Sow seed in a cold frame in spring; take softwood cuttings in early summer, hardwood cuttings in winter.
Problems:
Gray mold, slugs, powdery mildew, rust, ringspot virus, leaf spots.
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