Description
Packs a punch!- Exceptional F1 series for use in both pack and pot production.
- Well-branched with early-to-bloom, extra-large flowers that maintain their perfect form even in the most extreme conditions.
- Bold color intensity and floriferous plant structure provide superior impact at retail and enduring flower-power in the landscape.
Features
Growing information
Culture Information
Blockbuster™
Vinca
Catharanthus roseus
Product form: Seed
Containers: Packs, Pints, Quarts, Gallons, Hanging Baskets
Habit: Upright
Garden Specifications
Garden height: 10–12" (25–30 cm) tall
Garden width: 12–16" (30–40 cm) wide
Exposure: Full Sun
USDA zone: 11
AHS zone: 12–1
Product use: Packs, Containers, Landscapes, Hanging Baskets, Patio Pots, Combos
Germination
Germination time: 7–8 days
Media temperature: 76–78 °F (24–25 °C)
Chamber: Optional
Light: Not required for germination
Seed cover: Yes
Seeds per cell: 1
Moisture level: 5 - SATURATED: Soil is dark brown and shiny, free water is present at the surface of the soil, water drips freely from the bottom of the tray, and trays are heavy with a visible bend in the middle.
Young Plant Production
Recommended tray size: 288-cell tray
Temperature
Day: 74–76 °F (23–24 °C)
Night: 74–76 °F (23–24 °C)
Average daily temperature: 74–76 °F (23–24 °C)
Lighting
Day extension lighting: Not necessary
Light intensity: 400–500 µmol·m−2·s−1
Day length response: Day neutral
Daily light integral (DLI): 14–16 mol·m−2·d−1
Media pH: 5.5–5.9
Media EC: SME 0.9 to 1.3 mS/cm Press/Squeeze Method EC: 1.4–2.0 mS/cm
Fertilizer: 75–125 ppm N
Moisture level: Media should be allowed to dry between irrigations. Alternate between moisture level 2 and 4. 2 - MEDIUM: Soil is light brown in color, no water can be extracted from soil, and soil will crumble apart. 4 - WET: Soil is dark brown but not shiny, no free water is seen at the surface of the soil, when pressed or squeezed water drips easily, and trays are heavy with a visible bend in the middle.
Pinching: No
Plant growth regulators (PGRs): PGRs are usually not needed in propagation; if needed due to low light levels B-Nine® WSG may be sprayed at 1,500–2,500 ppm. Do not apply Bonzi® to avoid potential phytotoxicity.
Plug grow time: 5 weeks in a 288-cell tray
Tech tip: Soil temperatures lower than 75 °F (23 °C) during germination may decrease germination rates. Keeping media pH at 5.8 or lower will help reduce the likelihood of Thielaviopsis infections.
Finishing
Temperature
Day: 76–78 °F (24–26 °C)
Night: 64–66 °F (18–19 °C)
Average daily temperature: 70 °F (21 °C)
Lighting
Day extension lighting: Not necessary
Light intensity: 1,200–1,600 µmol·m−2·s−1
Day length response: Day neutral
Daily light integral (DLI): Greater than 18 mol·m−2·d−1
Transplanting: Transplant directly into the finished container. Place the rooting media slightly below the level of media in the container. Make sure that the root ball is covered and that the plug is situated in the center of the pot.
Media pH: 5.5–5.9
Media EC: SME EC: 1.5–2.1 mS/cm, PourThru EC: 2.3–3.2 mS/cm
Fertilizer: 127–175 ppm N
Pinching: No. Pinching is not recommended or needed.
Plant growth regulators (PGRs): If needed sprays of B-Nine® WSG at 2,500–5,000 ppm or A-Rest® at 2–4 ppm may be applied.
Tech tip: Start with a disinfected growing area and keep media pH below 5.8 to help avoid Thielaviopsis infections. Control thrips to prevent INSV or TSWV infections. Do not try to finish vinca early in the North since the plants need high light and warm temperatures to grow adequately. PGRs are usually not required except in pack production. Never apply Bonzi® to vinca as leaf spotting may occur.
Moisture level: Media should be allowed to dry between irrigations. Alternate between moisture level 2 and 4. 2 - MEDIUM: Soil is light brown in color, no water can be extracted from soil, and soil will crumble apart. 4 - WET: Soil is dark brown but not shiny, no free water is seen at the surface of the soil, when pressed or squeezed water drips easily, and trays are heavy with a visible bend in the middle.
Common pests: Thrips, fungus gnats, shore flies
Common diseases: Thielaviopsis, Rhizopus, Rhizoctonia, Pythium, Tospovirus (INSV and TSWV)
Postharvest: Try Chrysal Alesco®, a postharvest foliar spray, to protect ethylene sensitive crops during shipping and retail.
Scheduling
| Size | Crop Time | Plants Per Pot |
|---|---|---|
| Packs | 3–4 weeks | 1 ppp |
| Large Packs | 3–4 weeks | 1 ppp |
| 1.0 pint (4 inch) | 4–5 weeks | 1 ppp |
| 1.0 quart (4.5 to 5 inch) | 4–5 weeks | 1 ppp |
| 1.25 to 2.5 quart (6 inch, trade gallon) | 4–6 weeks | 3 ppp |
| 1.5 gallon hanging basket (10 inch basket) | 4–6 weeks | 4 ppp |
Estimated finish crop time is from transplant of a 288-cell tray and finished at an average daily temperature (ADT) of 70 °F (21 °C).
Example crop schedule for a 1.25 quart
| Weeks From Transplant | Description |
|---|---|
| 1 week | Apply preventative fungicide drench for Thielaviopsis and Pythium |
| 2 weeks | Start thrips monitoring program |
| 5 weeks | Finish |
Frequently asked questions
You can buy Syngenta Flowers' products through authorized distributors and brokers. Visit the Distributors section of our website to find a supplier near you.
No, Syngenta Flowers does not sell directly to consumers or growers. Our products are available through authorized distributors and brokers. Please refer to our Where to Buy page for more information.
You can stay informed by visiting the News section on our website, which features updates on new products, partnerships, and industry recognitions. You can also, sign up for our e-mail newsletters for the latest insights on new varieties, tech tips, and more!
Yes, we offer a Technical Document Library with culture guides, sell sheets, white papers, technical articles, and videos to support growers. We have a Grower Success Guide that serves as a fast and easy reference tool for all Annuals and perennials. And if you still need help, contact your broker rep directly, and they will resolve or direct you to the correct contact.
Grower Success Guide
Look for our flowers in garden centers across the country. Many of our seeds are available to consumers from seed packet companies online.
Growers, retailers, agencies, and brokers - can access images through the Trinity Image Library. The library link is conveniently located in the footer of every page.
Yes, during transport, plants experience a lot of stress and when plants are stressed they can release ethylene. Higher temperatures, enclosed spaces, and damage to the plants increase the ethylene concentrations in the shipping environment.
Resources
Protect your Ethylene-Sensitive Crops
All our product catalogs are available digitally on our website's catalog page. While we maintain limited printed versions, we primarily offer digital catalogs to support environmental sustainability.
For the most current product information, we recommend checking our website directly as product details may change more frequently than catalog updates.
You can find our videos across multiple platforms:
- YouTube: Subscribe to our Syngenta Flowers channel for growing tips, product showcases, and educational content
- Instagram: Follow us for quick video updates and stories
- LinkedIn: Connect with us for professional insights and industry news
- Document Library: Access our technical videos and product demonstrations
For the most comprehensive video collection, visit our YouTube channel.