There's a common frustration among peony growers: you've nurtured your plants all year, anticipated their glorious blooms, and just as they reach full magnificence, heavy rain arrives and the stems collapse under the weight. Those luxurious double blooms that make peonies so desirable can also be their downfall, quite literally.
The good news is that with the right support strategy, you can keep your peony blooms upright and looking their best throughout the flowering season. This guide covers the various support options and helps you choose the right approach for your garden.
Why Peonies Need Support
Not all peonies require staking, but many of the most popular varieties do. Understanding why helps you decide which plants need support:
- Heavy blooms: Fully double varieties can have blooms weighing hundreds of grams
- Water weight: Rain-soaked flowers become even heavier
- Stem strength: Some varieties naturally have weaker stems
- Top-heavy growth: Large flowers on tall stems create leverage
- Wind exposure: Plants in windy locations are more prone to damage
Varieties Most Likely to Need Support
Heavy doubles like Sarah Bernhardt, Festiva Maxima, and Duchess de Nemours typically need support. Singles and semi-doubles like Coral Charm often have stronger stems and may not require staking.
Support Options
Peony Rings (Grow-Through Supports)
These are the most popular and effective option for supporting peonies. A peony ring consists of a circular grid supported by legs that push into the ground. Plants grow up through the grid, which provides all-around support.
Advantages:
- Provides even support to all stems
- Nearly invisible once plants are in full growth
- Easy to install
- Reusable year after year
- Available in various sizes
Disadvantages:
- Must be installed before significant growth
- Initial cost
- Storage required in winter
Installation Timing
Install peony rings when shoots are just emerging or still quite short (under 15cm). If you wait until stems are tall, they may be damaged during installation and won't grow naturally through the grid.
Individual Stakes and Ties
For gardeners with just a few peonies or specific problem stems, individual staking with bamboo canes and soft ties works well.
Advantages:
- Targets specific stems that need support
- Inexpensive
- Can be added after stems are tall
- Flexible approach
Disadvantages:
- More visible than ring supports
- Time-consuming for many stems
- Can look untidy
- May not provide sufficient support for very heavy blooms
Linking Stakes
Modular systems of stakes connected by links can be configured to surround peony plants. These create a cage-like structure around the plant.
Advantages:
- Adjustable size and shape
- Can be installed around established plants
- Provides all-around support
- Relatively inconspicuous when plants are in leaf
Disadvantages:
- More complex to set up than rings
- May not suit all garden styles
- More expensive than simple stakes
Tomato Cages
Standard tomato cages can work for peonies in a pinch, though they're not ideal. They provide a circular support structure but are usually too tall and not designed for the growth habit of peonies.
DIY String Supports
A budget option is to install stakes around the plant and run garden twine between them at appropriate heights. This can be effective but is the least attractive option.
How to Install Peony Rings
Since peony rings are the most popular option, here's a detailed installation guide:
- Choose the right size: Measure your peony's spread from previous years; rings come in various diameters
- Time it right: Install when shoots are just emerging or under 15cm tall
- Position carefully: Centre the ring over the emerging shoots
- Push legs in firmly: Ensure the ring is stable and level
- Adjust height: The grid should end up about two-thirds up the mature stem height
- Leave room for growth: Don't position too tightly around shoots
Pro Tip
Mark your peony locations in autumn after cutting back foliage. This makes it easy to position supports correctly in spring before shoots are even visible.
Emergency Support for Flopping Plants
If rain has already knocked your peonies down and you don't have supports in place, here's what to do:
- Wait until the plant is dry to avoid stem damage
- Gently lift stems to upright position
- Install stakes around the perimeter of the plant
- Run twine around the stakes to create a supporting cage
- For individual heavy stems, use a single stake and soft tie
- Accept that some stems may be damaged and cut flowers for indoor display
Choosing Varieties That Need Less Support
If staking isn't practical for your garden, consider growing varieties known for strong stems:
- Single varieties: Lighter flowers need less support
- Semi-doubles: Coral Charm, Bowl of Beauty
- Japanese types: Generally stronger stems than full doubles
- Shorter varieties: Less leverage from shorter stems
Other Strategies for Stronger Plants
Cultural practices can improve stem strength:
- Avoid excessive nitrogen: High nitrogen promotes soft, weak growth
- Ensure adequate potassium: Potassium promotes stem strength
- Maintain good drainage: Waterlogged roots produce weaker plants
- Provide full sun: Shaded plants stretch and have weaker stems
- Don't overcrowd: Plants competing for light produce taller, weaker stems
Wind Protection
Peonies in wind-exposed locations are more prone to damage regardless of stem strength. Consider site selection carefully, or create wind breaks with hedging or fencing.
When to Cut for the Vase
Sometimes the best "support" is to cut blooms before they're damaged. If heavy rain is forecast and your peonies are at the marshmallow stage (soft to the touch), consider cutting them for indoor display. Cut flowers avoid rain damage entirely and can be enjoyed up close.
With the right support strategy, you can enjoy your peony blooms at their best, whether in the garden or in a vase. Install supports early, choose the right method for your situation, and you'll spend less time dealing with fallen stems and more time admiring these magnificent flowers.