Venti™ Dahlia Series

A uniform, vigorous series of double-flowered dahlias that brings a broad range of core colors and exciting bicolors to the market. Venti is a series that fills the gallon and larger dahlia needs by putting on a large flower display, and it provides a more controlled habit than the competition. Sourced from a worldwide-proven dahlia cutting farm, Venti varieties have been trialed and grown throughout Europe and North America with excellent results. Venti is your top pick for “thrillers” in your combinations.

Container Size
General Information
Height:16 - 18" (41 - 46cm)
Spread:14 - 16" (36 - 41cm)
Exposure:Partial Sun, Sun
Rooting Guidelines
Recommended Cell Size (in millimeters):25 mm
Rooting Hormone (IBA + NAA mix):yes
Average Days with Mist:9 to 12
Early PGR Treatment Recommended (after 7 - 10 days):Apply B-Nine 1,500 PPM (S)

PGR applications during rooting:
Sprays only. Cover the plants and avoid run-off as much as possible. For vigorous products, first application should be done about 7-10 days after sticking, second when needed. Please test before use.

Average Propagation Weeks:5
Pinch in Propagation:yes
Comments:Begin feed regime as soon as roots are present to keep plant herbaceous. When propagating in short day season, give long days during liner growing.
Rooting & Finishing
Media pH:5.8-6.2

Best results are achieved if media with the correct pH is used starting with propagation.

Fertilizer Needs:200-250 PPM N/EC 1.8-2.2

Start with low concentrations after roots show and increase with plant development to the recommended levels.

Watering:keep constantly moist

In general avoid drying out or overwatering the substrate as this will affect plant quality and finishing time. Root system will suffer when conditions change from one extreme to the other. “Growing on the dry side“ means letting the substrate become dry (substrate color turns light brown and substrate starts to separate from the pot edge) before watering.

“Keep constantly moist“ means watering the plants just before substrate becomes dry. Water management in rooting and finishing is half the success and the best way to prevent root-bound diseases, improve performance and control plant quality.

Finishing Guidelines
Temperature Needs Day/Night: 70-75°F/55-60°F 21-24°C/13-16°C

During rooting keep soil temperature measured in the liner at 70°F/21°C until cuttings are well-rooted. After planting the liner, keep temperature up until roots have developed nicely. Afterward follow recommendations.

The use of “Cool Morning“ treatments will improve plant quality, flower and foliage color, and plant habit, and harden the plants. Lower the temperature by 8-12°F/4-6°C 2 hours before sunrise until 2-3 hours after sunrise. Start treatments after plants are rooted in, well-branched and cover the media (reach the pot edges). To avoid delayed flowering, keep the average day temperature under a close watch and if necessary, increase night temperatures. Finishing of the crop depends on the average day temperature, and positive or negative DIF methods as well as “Cool Morning” can be used to improve plant quality.

Pinch after Transplant (unpinched liners):optional
Light Levels in Foot Candles:4,000 to 7,000
Plant Growth Regulators (PGR) (S) = spray / (D) = drench:B-Nine 1,500 PPM/Cycocel 500 PPM (S), Paclobutrazol 1-2 PPM (D), Sumagic 0.5-1 PPM (D)
Pests and Fungal Diseases:Phytopthora, Powdery Mildew, Botrytis, Pythium, Aphids, Leafminer, Spider Mites, Thrips
Comments: Manage humidity and avoid irrigation over blooms to prevent botrytis and powdery mildew.
Crop Time
4- to 5-inch (10- to 13-cm) Pots, Quarts: 5 to 7 weeks, 1 ppp
6-inch (15-cm) Pots, Gallons:7 to 9 weeks, 1 ppp
10- to 12-inch (25- to 30-cm) Tubs or Baskets:10 to 14 weeks, 3 to 4 ppp
Dahlia Production - Selecta Field Notes
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Download Culture Details
  • Venti™ Royal Purple
  • Venti™ Royal Purple
Venti™ Royal Purple
(Flowering Only License)