Petchoa is one of the most exciting flowering plants to arrive on the seed market in recent years. Combining the best characteristics of petunias and calibrachoas, Petchoa Caliburst™ delivers large colorful blooms, vigorous growth, and excellent weather tolerance in one easy-to-grow plant.

For gardeners looking for something unique, Petchoa Caliburst™ offers the flower power of petunias combined with the vibrant colors and performance of calibrachoas. Even better, Caliburst is the first Petchoa available from seed, making it accessible for home gardeners and professional growers alike.

What Is a Petchoa?

Scientific Name: Petunia sp. × Calibrachoa sp.

Common Name: Petchoa

Petchoa is a hybrid created by crossing petunias and calibrachoas. The result is a plant that combines:

• Petunia vigor
• Calibrachoa flower colors
• Excellent branching
• Better weather tolerance
• Extended flowering season
• Easy seed production

Petchoa Caliburst™ has quickly become popular among growers because it performs similarly to vegetative varieties while maintaining the convenience and affordability of seed-grown plants.

Why Gardeners Love Petchoa Caliburst™

Petchoa Caliburst™ offers several advantages over traditional petunias and calibrachoas.

Vibrant Colors

One of the biggest benefits is the stunning flower color range. The blooms showcase the rich, vivid colors typically associated with calibrachoas while maintaining larger petunia-style flowers.

Long Bloom Season

Petchoa flowers continuously from:

• Early Spring
• Spring
• Summer
• Late Summer
• Autumn

With proper care, plants remain covered with blooms throughout the growing season.

Excellent Growth Habit

Petchoa develops a mounded, spreading, and trailing habit that works beautifully in:

• Hanging baskets
• Patio containers
• Window boxes
• Mixed planters
• Garden beds

Plants typically reach:

• Height: 6–10 inches
• Width: 20–28 inches
• Spacing: 10–15 inches

The spreading habit quickly fills containers with color.

Petchoa Caliburst™ Varieties Available

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These exciting varieties provide brilliant color displays that perform exceptionally well in baskets and patio containers.

Starting Petchoa Seeds Indoors

Petchoa seed production is very similar to petunias but requires slightly longer germination.

Germination Conditions

For best results:

• Temperature: 68–77°F (20–25°C)
• Soil pH: 5.5–6.0
• Keep media evenly moist
• Do not cover pelleted seed
• Provide light after sowing

Seeds typically germinate in:

• 3–7 days

Petchoa requires approximately 1–2 additional days compared to standard petunias.

Light Requirements During Germination

Stage 1:

• Light optional

Stage 2:

• 1,000–2,500 foot candles

Stage 3:

• 2,500–4,000 foot candles

Stage 4:

• 2,500–5,000 foot candles

Strong lighting helps produce compact, sturdy seedlings.

Plug Production

Professional growers typically produce plugs in:

• 288 cell trays
• 128 cell trays

Plug crop time generally runs:

• 4–6 weeks

During this stage:

• Avoid overwatering
• Maintain consistent moisture
• Provide adequate airflow
• Feed lightly with nitrogen

Recommended fertilizer levels:

• Less than 100 ppm N initially
• Increase to 100–175 ppm N after seedling establishment

Transplanting Petchoa

Once plugs have developed strong root systems, they can be transplanted.

Finish times:

Spring Production

• 6–7 weeks after transplant

Summer Production

• 4–5 weeks after transplant

Petchoa is remarkably cold durable and can be produced earlier in spring than many comparable flowering plants.

Best Containers for Petchoa

Petchoa truly shines in containers.

Ideal sizes include:

• Quarts (13 cm)
• Gallons (17 cm)
• Hanging baskets (23 cm and larger)

The controlled habit allows containers to fill quickly without becoming difficult to manage.

Because plants spread up to 28 inches wide, baskets become completely covered with flowers.

Sunlight Requirements

Petchoa performs best in:

• Full Sun
• Partial Sun

At least 6 hours of sunlight daily will maximize flowering.

More sunlight generally produces:

• More flowers
• Better branching
• Stronger growth

Watering Petchoa

Petchoa prefers:

• Medium moisture
• Consistent watering
• Good drainage

Avoid:

• Constantly wet soil
• Waterlogged containers
• Standing water

Allow the surface of the growing media to dry slightly between waterings.

Fertilizing Petchoa

One reason Petchoa performs so well is its strong response to feeding.

Feed:

• Once per week

Use a balanced flowering fertilizer.

Consistent feeding helps support:

• Continuous blooms
• Strong branching
• Bright flower color

Petchoa in Hanging Baskets

Petchoa is one of the best flowering plants for hanging baskets.

Benefits include:

• Long flowering season
• Excellent spread
• Strong branching
• Continuous color

Many gardeners describe Petchoa as combining the best qualities of:

• Wave Petunias
• Calibrachoas

The result is a basket overflowing with flowers from spring through fall.

Common Petchoa Problems

Aphids

Watch for:

• Curled leaves
• Sticky residue
• Distorted growth

Thrips

Thrips can damage flowers and reduce bloom quality.

Fungus Gnats

Usually associated with overly wet growing media.

Root Diseases

Potential issues include:

• Rhizoctonia
• Pythium

Preventive measures include:

• Proper drainage
• Good airflow
• Avoiding overwatering

Companion Plants for Petchoa

Petchoa combines beautifully with:

• Bacopa
• Verbena
• Lobelia
• Sweet Potato Vine
• Calibrachoa

For another excellent trailing basket plant, read:

👉 Bacopa Seeds: How to Grow Bacopa From Seed Step-by-Step for Containers and Baskets
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Why Petchoa May Become the Future of Seed-Grown Baskets

Petchoa Caliburst™ represents a major advancement in flowering plants.

Growers appreciate:

• Seed convenience
• Petunia vigor
• Calibrachoa color
• Early spring production
• Long bloom season
• Basket performance

For gardeners looking for something new and exciting, Petchoa offers one of the best combinations currently available.

Frequently Asked Questions

What is a Petchoa?

Petchoa is a hybrid cross between petunias and calibrachoas that combines the strengths of both plants.

How long does it take Petchoa seeds to germinate?

Most Petchoa seeds germinate within 3–7 days when maintained at 68–77°F.

Does Petchoa grow in hanging baskets?

Yes. Petchoa is one of the best plants available for hanging baskets because of its spreading and trailing growth habit.

Is Petchoa frost tolerant?

Petchoa is more cold durable than many flowering annuals and can be produced in early spring.

How often should I fertilize Petchoa?

Feed once per week with a balanced flowering fertilizer.

How large does Petchoa Caliburst™ get?

Plants typically grow 6–10 inches tall and spread 20–28 inches wide.

Does Petchoa attract pollinators?

Yes. Petchoa flowers help attract bees and other pollinators throughout the growing season.

Is Petchoa better than petunias?

Petchoa combines petunia vigor with calibrachoa colors, making it an excellent choice for containers and baskets. Many gardeners grow both for different uses.