Bartzella Itoh Peony Bare Root | Intersectional Peony – Yellow Double Blooms

Bring premium colour and rare garden impact to cool-climate gardens with Bartzella Itoh Peony, a highly sought-after intersectional peony known for its large lemon-yellow double blooms, subtle red centre flares and strong garden performance. With its bold flower colour, sturdy growth and beautiful fragrance, Bartzella is one of the most desirable yellow peonies for collectors, cut flower growers and cool-climate gardeners.

Itoh peonies, also known as intersectional peonies, combine the beauty and flower size of tree peonies with the herbaceous growth habit of traditional garden peonies. Bartzella produces large, full double flowers in rich buttery yellow tones, often accented with soft red flares near the centre.

Flowering around October to November in suitable Australian climates, Bartzella creates a striking mid-spring display. Its strong stems, tidy growth and vibrant yellow blooms make it excellent for feature planting, borders, cottage gardens, formal gardens and cut flower arrangements.

Supplied as a bare-root tuber packed in peat, Bartzella Itoh Peony is suitable for planting in a sunny to lightly shaded position with fertile, free-draining soil and adequate winter chill.

Pre-Order Note

NOTE: This is a pre-order.

Stock is expected to be ready around the end of July, however this may push into August depending on seasonal conditions and supplier availability.

This item is supplied as a bare-root tuber packed in peat and may be dormant at the time of dispatch.

Images shown are example pictures only. Flower colour, size and form may vary slightly depending on plant maturity, climate and growing conditions.

If there are any supply issues, we will contact you regarding substitution options.

Any items you do not wish to have substituted will be refunded.

Important Climate Note

Peonies require winter chill to flower well. Bartzella Itoh Peony is best suited to cool and cool-temperate Australian gardens.

It is generally best suited to areas such as VIC, TAS, ACT, SA and cooler parts of NSW, where winter temperatures provide enough chill for reliable flowering. In warmer regions, choose the coolest garden position available, provide afternoon shade, mulch well and avoid hot, exposed sites.

Peonies can take 2–3 years to flower reliably after planting, especially while they are establishing.

Features

• Premium Bartzella Itoh Peony variety
• Also known as an intersectional peony
• Large full double blooms
• Rich lemon-yellow to buttery-yellow flower colour
• Subtle red flares near the centre
• Pleasant fragrance
• Height approximately 60–80cm
• Flowers around October to November in suitable Australian climates
• Strong stems and robust growth
• Excellent cut flower variety
• Ideal for borders, cottage gardens, formal gardens and feature planting
• Frost hardy once established
• Moderate water needs during active growth
• Supplied as a bare-root tuber packed in peat
• Premium pre-order item, expected around the end of July to August

Planting & Care

Plant Bartzella Itoh Peony in a position with full sun to part shade. In cooler regions, full sun is ideal. In warmer or more exposed areas, afternoon shade can help protect the plant from heat stress.

Choose fertile, free-draining soil with a neutral to slightly acidic pH, around 6.5–7.0. Peonies dislike sitting in wet, heavy soil, so improve drainage before planting if needed.

Plant the bare-root tuber with the buds facing upward. The buds should sit approximately 3–5cm below the soil surface. Planting too deeply can reduce or prevent flowering.

Space plants around 90cm to 1m apart to allow room for the clump to mature and to encourage good airflow.

Water well after planting, then keep the soil lightly and consistently moist during establishment and active growth. Avoid waterlogging. Bartzella prefers regular moisture during warm weather but should not be left sitting in wet soil.

Improve the soil at planting with compost, blood and bone, or well-rotted organic matter. Feed in early spring and again after flowering with a balanced fertiliser to support strong growth and future flowering.

Bartzella generally has stronger stems than many traditional herbaceous peonies, but support may still be helpful in windy areas or during wet weather when the large blooms become heavy.

After flowering, remove spent blooms but leave the foliage to continue growing. In autumn, once the foliage has naturally started to die back, cut stems down close to ground level and remove old foliage to help reduce disease issues.

Itoh peonies prefer not to be moved once established. Divide only during dormancy if plants become overcrowded or need relocating.

Flowering Time

Flowering: Mid-spring.

In many suitable Australian regions, Bartzella Itoh Peony flowers around October to November, depending on climate, chill hours and seasonal conditions.

Product Details

Botanical Name: Paeonia ‘Bartzella’
Common Name: Bartzella Itoh Peony, Intersectional Peony
Product Type: Bare-root perennial
Supplied As: Bare-root tuber packed in peat
Flower Colour: Lemon-yellow to buttery-yellow with subtle red centre flares
Flower Form: Large full double blooms
Fragrance: Pleasant fragrance
Height: Approximately 60–80cm
Flowering Time: Mid-spring, usually October to November in suitable climates
Aspect: Full sun to part shade
Soil: Fertile, free-draining soil
Preferred Soil pH: Approximately 6.5–7.0
Planting Depth: Buds approximately 3–5cm below soil level
Spacing: Approximately 90cm to 1m apart
Watering: Moderate; keep evenly moist during active growth without waterlogging
Water Wise: No; prefers consistent moisture during active growth
Frost Tolerance: Frost hardy
Climate: Best suited to cool and cool-temperate regions
Suitable Zones: Zones 1, 2 and 3
Suitable Areas: VIC, TAS, ACT, SA and cooler parts of NSW
End Use: Garden beds, borders, feature planting, cottage gardens, formal gardens, cut flowers
Availability: Pre-order, expected around the end of July to August

Pet Safety Note

Peony plant material can be harmful if eaten by pets. Keep roots, foliage and flowers away from cats, dogs and other animals if ingestion is a concern.

FAQ

What is Bartzella Itoh Peony?

Bartzella is an Itoh peony, also known as an intersectional peony. Itoh peonies combine features of herbaceous peonies and tree peonies, giving strong garden growth and large, showy flowers.

What colour are Bartzella Peony flowers?

Bartzella produces rich lemon-yellow to buttery-yellow double blooms with subtle red flares near the centre.

Is Bartzella Peony fragrant?

Yes. Bartzella has a pleasant fragrance, making it a beautiful choice for both garden display and cut flowers.

How tall does Bartzella Peony grow?

It generally grows around 60–80cm tall, depending on climate, soil and plant maturity.

When does Bartzella Peony flower in Australia?

In suitable Australian climates, flowering is usually around October to November, depending on region and seasonal conditions.

What climates are best for Bartzella Itoh Peony?

Bartzella performs best in cool and cool-temperate climates with enough winter chill. It is best suited to areas such as VIC, TAS, ACT, SA and cooler parts of NSW.

Can Bartzella Peony grow in warm climates?

It is not ideal for warm coastal, subtropical or tropical climates. In warmer areas, it may be tried in a cool, protected position with afternoon shade, but flowering may be less reliable.

Does Bartzella Peony need winter chill?

Yes. Like other peonies, Bartzella needs winter chill to flower well. Without enough cold exposure, plants may grow but flower poorly or not at all.

Can Bartzella Peony grow in pots?

Yes, but it needs a large deep pot, rich free-draining soil, regular feeding and sufficient winter chill. Garden planting is usually more reliable long term.

How deep should I plant Bartzella Peony roots?

Plant with the buds approximately 3–5cm below the soil surface. Avoid planting too deeply, as this can reduce flowering.

How far apart should I plant Bartzella Peonies?

Space plants around 90cm to 1m apart to allow room for the clump to mature.

Does Bartzella Peony need staking?

Bartzella usually has strong stems, but support may still be helpful in windy areas or during wet weather when blooms become heavy.

Is Bartzella good for cut flowers?

Yes. Bartzella is excellent for cut flowers, with large yellow blooms and strong garden presence.

Will Bartzella Peony come back each year?

Yes. In suitable climates, it is a long-lived perennial that returns each spring.

How long does it take to flower?

Peonies may take 2–3 years to flower reliably after planting, especially while they are establishing.

Should I cut Bartzella Peony back?

Yes. Cut stems back close to ground level in autumn once the foliage has naturally started to die back.

What is it supplied as?

It is supplied as a bare-root tuber packed in peat, ready for planting during the recommended season.

Is this a pre-order?

Yes. This item is a pre-order. Stock is expected around the end of July, however this may push into August depending on seasonal conditions and supplier availability.

What happens if there is a supply issue?

If there are any supply issues, we will contact you regarding substitution options. Any items you do not wish to have substituted will be refunded.