- You Will Get 500 Seeds Of Roman Chamomile Chamaemelum Nobile Herb Flower Seeds. - Description: - Name: Roman Chamomile. - Scientific Name: Chamaemelum Nobile. - Color: Evergreen Leaves & White Flowers With Yellow Centers. - Plant Seeds: Outdoors After Danger Of Frost / Indoors Weeks Before Last Frost. - Plant Height: 6 - 9". - Plant Spacing: 6 - 18". - Bloom Time: Mid Summer - Early Fall. - Hardiness Zone: 4 - 9 (& Reseeds Itself Easily). - Light Requirements: Sun - Part Shade. - Soil & Water Preferences: Average.