- You Will Get 200 Seeds Of Mixed Laura Bush Petunia Violacea Pink Purple White Trumpet Flower Seeds. - Description: - Name: Mixed Laura Bush Petunia. - Scientific Name: Petunia Violacea. - Color: Dark & Light Shades Of Pinks & Purples - Pure White. - Plant Seeds: At 68 - 86f. - Bloom Time: April – Frost. - Hardiness Zone: 7 – 10. - Plant Height: 18 - 24". - Plant Spacing: 15 - 18". - Light Requirements: Sun. - Soil & Water Preferences: Average.