Growing Tips for Helianthus Sunflower ‘Sunfinity’

Helianthus Sunfinity (Syngenta Flowers)Editor’s Note: Each month, the Greenhouse Grower varieties team chooses one noteworthy variety we think is worth bringing to your attention. Then we share growers’ and breeders’ perspectives on the best ways to produce it successfully at your operation. This month we feature Helianthus ‘Sunfinity’ from Syngenta Flowers.

Helianthus ‘Sunfinity’ is Greenhouse Grower’s Industry’s Choice pick for 2017, as well as the Readers’ Choice winner. This annual sunflower is a profuse bloomer with strong branching that produces multiple flowers per plant from spring to fall.

Gardeners can cut the blooms for use indoors with no mess and without affecting the plants’ performance in the landscape or patio containers. Sunfinity Sunflowers are pollen free, but they still produce nectar that attracts beneficial insects. Unlike traditional short-day sunflowers, Sunfinity sunflowers are facultative long-day plants that offer fast crop times well-suited for late spring and early summer production.

Tim van der Hengst, Head Grower at South Central Growers (SCG) in Springfield, TN, has been working with Sunfinity sunflowers for the last year with good success. The sales team at South Central Growers reported 90% sell through of the product the first week at retail.

van der Hengst says growers need to make sure that plants are receiving long days, as this will provide quicker blooming and less plant growth regulators (PGRs) will need to be applied before shipping. During production, he says he recommends keeping the media moist and applying PGRs at the correct times. If plants get too tall, pinch them back and reapply PGRs at a higher rate. The plants will finish out just fine.

van der Hengst’s Recommendations for Growing Sunfinity Sunflowers Successfully:

Irrigation: Sunfinity sunflowers take a lot of water. Keep them moist at all times. It is important not to let plants wilt because this will cause yellowing of lower leaves and reduce quality at time of shipping.

Fertilizer: Use a well-balanced fertilizer at 80 to 100 ppm nitrogen constant feed.

Growing Media: South Central Growers (SCG) uses a 70% peat, 30% HydraFiber mix.

Planting/Scheduling: Plug time is four to five weeks. Finish time is seven to eight weeks.

Propagation: South Central Growers produced Sunfinity in an 88-strip tray, with a 4-week total plug time from sow to transplant. van der Hengst says applying an early plant growth regulator soil drench helps avoid initial stretch of the seedling. Growers at SCG applied 2 ppm Piccolo 10xc on Day 2.

Lighting: It is necessary to produce Sunfinity sunflowers in early season under short-day conditions. Make sure to provide 14-hour days.

Pinching: Pinch plants to four to five leaves. This can be done before or after transplant, but it needs to be done within a week after transplant.

Plant Growth Regulators: Use 3 ppm Piccolo 10xc at one week after transplant. Follow with 5 ppm Piccolo 10xc 14 to 21 days later. Growers can reduce the second application rate if they produce plants earlier in the season. Also, 30 to 40 ppm Piccolo Sprays or B-Nine at 2500 to 3500 ppm before shipping can help keep head stretch to a minimum.

Pests: Thrips can be an issue later in the season. Watch closely for them as the flowers start to open.

Diseases: SCG did not experience any issues with disease. Growers preventively drenched the crop with a Mefenoxam and Emblem tank mix as a media drench two weeks after transplant.

Learn more about Sunfinity Sunflowers at SyngentaFlowers-us.com (for grower recommendations) or MySunfinity.com.

Topics: , , , ,

Leave a Reply

More From Annuals...
Upper-garden_Mast-Young

November 24, 2017

2017 Mast Young Plants Field Trials Results

Check out the 2017 field trial results from Mast Young Plants in Grand Rapids, MI.

Read More
Pentas-Graffitti-Lipstick

November 23, 2017

2017 Dallas Arboretum Field Trials Results

Check out the 2017 field trials results for Dallas Arboretum in Dallas, TX.

Read More
Pentas-Lucky-Star-Red

November 22, 2017

2017 Louisiana State University Field Trials Results

Check out the 2017 field trials results Louisiana State University in Hammond, LA.

Read More
Latest Stories
Eason-New-Calibrachoa-Hi-Graft

November 14, 2017

Eason Horticultural Resources Introduces New Decorative…

Created by Hishtil Nursery in Israel, the new decorative forms of calibrachoa feature an 8- to 12-inch stem and come in four colors of calibrachoa blooms on top.

Read More
Helianthus Sunfinity (Syngenta Flowers)

September 3, 2017

Growing Tips for Helianthus Sunflower ‘Sunfinity…

This annual sunflower is a profuse bloomer with strong branching that produces multiple flowers per plant from spring to fall.

Read More

August 29, 2017

27 New Impatiens for Spring Color in 2018

Gardeners love impatiens because they are one of the few plants that offer stand-out, splashy blooms for shady areas, and in some cases full sun. There's no shortage of new introductions this year to choose from for your 2018 product mix. Here are 27 new and improved varieties to consider offering to your customers.  

Read More
Candy Tops Snapdragons Series (Sakata Ornamentals)

August 3, 2017

Five Characteristics Breeders Want in Top-Performing Sp…

New spring annuals have to provide something for everyone — longevity, durability, performance, and more — if they want to meet breeders’ high standards for market-worthy plants.

Read More
Petunia 'Headliner Pink Sky" (Selecta)

August 3, 2017

Why Eccentricity is the New Black in Spring Annuals

Consumers judge plants by appearance, color impact, and ease of maintenance, which is why retailers want new spring annuals that are novel standouts.    

Read More
Petunia 'Amore Mio' (Danziger)

June 8, 2017

AmericanHort Update on Genetically Engineered Petunias

AmericanHort is actively assisting affected plant breeders, distributors, growers, and retailers as the genetically modified petunia regulatory response continues. Since the last update, there have been several changes to the list of petunias confirmed or suspected of being genetically engineered and therefore unauthorized to be imported or sold. Also, the list of recognized laboratories for petunia variety confirmation testing has expanded. Most importantly, petunia varieties on the USDA-APHIS Biotechnology Regulatory Services (BRS) list require an APHIS Form 2000 for importation. APHIS also began requiring that any Petunia spp. Shipments, not including regulated GE varieties, must be accompanied by a list of variety names. This resulted in some inspection delays at the USDA-APHIS plant inspection station in Atlanta over the past two weeks. In response, AmericanHort has negotiated a more flexible approach with APHIS, and new guidance has just been posted for importing Petunia plants, cuttings, or seed. The new guidance allows […]

Read More

May 25, 2017

Genetically Modified Petunia Update: Breeders Take Swif…

Now that the initial shock of genetically engineered petunias is wearing off, breeders continue testing for tainted stock and look toward the future. On the consumer side, uncertainties remain.  

Read More

May 23, 2017

USDA-APHIS Bulletin on Unauthorized Distribution of Gen…

On May 2, 2017, USDA-APHIS was informed that an orange petunia variety was potentially genetically engineered and had been imported and moved interstate without required authorization by APHIS. This led to testing of numerous petunia varieties, which confirmed this particular variety and several others are genetically engineered, and meet the regulatory definition of a regulated article under APHIS regulations. APHIS continues to work with the industry to ensure unauthorized GE petunias are not distributed in the United States.

Read More
Petunia F1 African Sunset from American Takii

May 22, 2017

Genetically Modified Petunia Update: Question and Answe…

AmericanHort’s key role interfacing with the USDA on the recall of genetically modified petunias has helped the horticulture industry rapidly address the problem. Senior Vice President Craig Regelbrugge talks about recent updates, the impact on the industry, and where it goes from here.

Read More

April 25, 2017

41 New Vegetative Petunias From California Spring Trial…

With the abundance of new introductions for the 2018 retail season, we’ve made it easier for you to sift through them by separating out the vegetative petunias from the Northern sites, which includes selections from Westhoff Flowers, Sakata Ornamentals, Danziger, Proven Winners, and Syngenta flowers.

Read More
Zinnia Solmar Series (Floranova)

March 17, 2017

Phlox, Zinnias, and More for 2018 From California Sprin…

We asked breeders to share with us pictures and information on some of the great new annuals that you'll see at California Spring Trials 2017. They didn't let you down.

Read More
Cosmos ‘Apollo’ (Floranova)

March 14, 2017

Begonias, Dahlias, and More for 2018 from California Sp…

We asked breeders to share with us pictures and information on some of the great new annuals that you'll see at California Spring Trials 2017. They didn't let you down.

Read More
Limbo GP burgundy picotee

March 7, 2017

New Petunias and Calibrachoas for 2018 from California …

We asked breeders to share with us pictures and information on some of the great new petunias and calibrachoas that you'll see at California Spring Trials 2017. They didn't let you down.

Read More
Sea Breeze Catharanthus combo

December 2, 2016

Four Mixed Container Trends To Watch

Mixed containers are still one of the best-selling SKUs at retail. Pay attention to these four trends that are making their mark on multi-liner mixes and combination containers.

Read More

September 7, 2016

Check Out The Best Annuals For Attracting Bees And Butt…

Public interest in protecting bees and other pollinators has initiated a new market for flowers that are good food plants for pollinators. Here's a list of annuals Michigan State University Extension recommends that are attractive to bees and other pollinators.

Read More

September 6, 2016

10 Colorful Spring Plants For Sales In 2017

Trends with plants come and go, but color always sells. These spring crops for 2017 offer color choices ranging from bold and vibrant hues to understated, softer tones, and they’re versatile enough to be used in baskets, containers, beds, and borders.

Read More

August 6, 2016

Growing Tips On Petunia ‘Night Sky’ From Da…

Production tips for Petunia ‘Night Sky’ from Dan Chaney, Vice President of Production, at Ivy Acres.

Read More
NGI-SunPatiens-Compact-Hot-Coral-Sakata

March 23, 2016

P. Allen Smith Says SunPatiens Are Hero Plants For Cons…

Plants that ensure consumer success with disease resistance bred into their genetics, and ease of use in a variety of conditions, are heroes for gardeners, especially beginners, and they should be celebrated and supported to promote gardening success and interest. These are the messages the award-winning designer, gardening, and lifestyle expert P. Allen Smith wants the horticulture industry to know, with the recent announcement of his expanded partnership with Sakata Seed. In an exclusive interview with Greenhouse Grower, P. Allen Smith describes his expanded partnership with Sakata Seed to promote SunPatiens and why the now 10-year-old series helps both novice and expert gardeners to be successful. Smith also collaborates with Sakata to promote the HomeGrown Collection of vegetables. SunPatiens Set Consumers Up For Success, Smith Says As a plantsman first, Smith has extensively trialed SunPatiens in his gardens at Moss Mountain Farm in Little Rock, AR, and says he is […]

Read More