- Name: Rosilla - Other Common Names: Helen's Flower / Sneezeweed / Autumn Lollipop / Dogtooth Daisy - Scientific Name: Helenium Puberulum - Color: Yellow & Red - Purple Brown - Plant Seeds: Indoors Weeks Before Last Frost / Outdoors After Danger Of Frost - Bloom Time: Summer - Hardiness Zone: 6 - 10 - Plant Height: 3 - 5' - Plant Spacing: 2' - Light Requirements: Sun - Soil & Water Preferences: Average - Moist - Quantity: 50 Seeds - Other: More Info Coming Soon