returns in
304
days
Bloom calendar
Twist‑n‑Shout
Bigleaf hydrangea, Lacecap · Michael A. Dirr, 2009, USA
At‑a‑glance
- Group/Class: Bigleaf hydrangea, Lacecap
- Height × spread: 3–5 ft (0.9–1.5 m) × 3–4 ft (0.9–1.2 m)
- Bloom window: early summer to fall; reblooming
- Color & flower form: pink to blue lacecap
- Fragrance: 0 none
- USDA hardiness: zones 5–9
- Breeder / Year / Origin: Michael A. Dirr, 2009, USA
- Awards/registration: S. Plant Patent PP20,176; cultivar ‘PIIHM‑I’
- Cut‑flower notes: stems hold heads; conditioning essential; wilt‑prone if stems dry
- Pet safety: avoid
How it differs
- Lacecap form for a lighter look.
- Reblooms on old and new wood.
- Red stems and notable fall color.
Strengths
- Long bloom window
- Distinctive flower form
- Good stem strength
Care in one minute
Light: morning sun, afternoon shade.
Soil: organic, well drained; adjust pH for color.
Water weekly; mulch 2–3 in (5–8 cm).
Deadhead; avoid hard pruning; protect lower buds in cold regions.
Watch‑outs
- Hardiness listings differ; protect in zone 4
- Needs steady moisture in heat
- Blue requires acidic soil with aluminum
Best uses (tags)
Provenance note
Registered as ‘PIIHM‑I’ and patented in 2009. Parentage includes ‘Penny Mac’ crossed with ‘Lady in Red’.
References
- U.S. Plant Patent, ‘PIIHM‑I’ PP20,176
- NC State Extension: Hydrangea macrophylla species
- ASPCA: Hydrangea toxicity
