Scaevola – Whirlwind® Blue
Dead-Heading Not Necessary
Self-cleaning, deadheading not necessary.
An application of fertilizer or compost on garden beds and regular fertilization of plants in pots will help ensure the best possible performance.
Great in both containers and landscapes.
Maintenance Category Easy
Water Category Average
Flower Form Container, Edging Plant, Groundcover, Landscape
Soil Fertility Average Soil
pH A - pH 5.5 - 5.8
EC (2:1 Extraction Method) 0.6 - 0.9
Fertilization 150 - 200
Light Requirements High
Water Requirements Moderate to Moist
Rooting Out Temperature 65 - 72° Fahrenheit
Growing On Temperature 65 - 72° Fahrenheit
Holding Temperature 50 - 60° Fahrenheit
Planting and Timing Information
Spring to Summer Finish. Standard PPP.
Finishing Times [weeks]
4-5" and Quart Pot : 4-6
6" and Gallon Pot : 5-7
7-9" Pot : 7-9
10-12" and Two Gallon Pot : 10-12
Pinching and Growth Regulators
For all sizes of containers, pinch the liner 1–2 weeks after transplant; for containers larger than 6” and for hanging baskets, trim around the edge of the container as needed prior to spacing or hanging of the baskets.
Sumagic at 2-5 ppm has been effective at controlling growth.
Pest and Disease Management
General pest and disease practices as listed in notes.
Grower Tips for Whirlwind
-Requires high light in production.
-Needs 200 ppm fertilizer.
-Prefers warmer production temperatures.
Australian plants prefer to have little or no Phosphorous added. This plant is sensitive to cold temperatures but makes a great spring and summer sales item. Avoid getting foliage wet under low light, high pH, and cool conditions.
Whirlwind varieties are more compact and better branched than other Scaevola varieties.