Poinsettia - Euphorbia Pulcherrima Light: Bright Indirect Light For A Minimum Of 6 Hr Needed Each Day. Temperature: 65-70 Deg During The Day And 60-65 Deg At Night. Keep Away From Drafty Areas. Water: Soil Must Be Kept Moist With Excess Water Drained Off The Plant. Fertilizer: Do Not Use A Fertilizer While Blooming.