Penny Mac Hydrangea
Hydrangea macrophylla 'Penny Mac'
Essentials
At a Glance
Plant Type
Shrub
Height
60 inches
Width
60 inches
Light
Partial Sun, Shade
Zones
5, 6, 7, 8, 9
Water
Moderate, keep soil moist
Humidity
Prefers moderate humidity
Lifespan
10+ years
Native To
Japan
Toxicity
Toxic to dogs, cats, and horses if ingested
The Story
Plant Bio
Hydrangea macrophylla is a deciduous shrub with large, glossy, dark green leaves. It is prized for its large, long-lasting flower heads. 'Penny Mac' is a reblooming (remontant) hydrangea, producing large mophead flowers on both old and new wood. This ensures a reliable bloom from late spring to fall, even after harsh winters. Flower color is pH-dependent: blue in acidic soils and pink in alkaline soils.
Bloom Period:
Uses & Benefits:
Marketplace
Where to Buy
Shipping costs Year-round shipping Free shipping
Planting
How to Grow
- Tuck young plants into well-prepared, moist soil in early spring.
- Mist cuttings regularly to maintain humidity for propagation.
- Water deeply once a week during dry spells, especially in summer.
- Apply a balanced fertilizer in early spring to promote blooms.
- Prune dead or weak stems in late winter before new growth begins.
- Mulch around the base to retain moisture and regulate soil temperature.
Pro Tip
Plant in morning sun with afternoon shade for best flowering and health.
Keep It Thriving
Care Guide
Do
- Water consistently to keep soil moist but not waterlogged 🌱
- Prune after flowering to shape and encourage new growth
- Apply mulch annually to conserve moisture and suppress weeds
Don't
- Avoid overwatering which can lead to root rot ❌
- Do not prune in late summer or fall as it can reduce next season's blooms
- Never plant in poorly drained soil
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Deadhead | ||||||||||||
| Fertilize | ||||||||||||
| Mulch | ||||||||||||
| Prune |
Watch Out For
Pests & Diseases
Common Pests
Common Diseases
In the Garden
Landscape Uses & Companions
Landscape Uses
Companion Plants
Multiply
Propagation Methods
Good to Know
Common Questions
Penny Mac Hydrangea questions
What zones can Penny Mac Hydrangea grow in?
Penny Mac Hydrangea is hardy in USDA Zones 5–9. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Penny Mac Hydrangea deer resistant?
Not reliably. Deer may browse Penny Mac Hydrangea, especially tender spring growth — plan on repellents or fencing where pressure is high.
When does Penny Mac Hydrangea bloom?
Penny Mac Hydrangea typically blooms in mid-summer through late summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Penny Mac Hydrangea need full sun?
Penny Mac Hydrangea does best in part shade.
More Hydrangea to compare
Incrediball Hydrangea
Hydrangea arborescens 'Incrediball'
Limelight Hydrangea
Hydrangea paniculata 'Limelight'
Bobo Hydrangea
Hydrangea macrophylla 'Bobo'
Little Lime Hydrangea
Hydrangea quercifolia 'Little Lime'
Bloomstruck Hydrangea
Hydrangea macrophylla 'Bloomstruck'
All Summer Beauty Hydrangea
Hydrangea macrophylla 'All Summer Beauty'
Keep exploring
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Hardy in your zone?
Grow Penny Mac Hydrangea with confidence
See it in a design of your actual yard, get zone-matched care reminders, and track it season by season in your garden journal.
