Here are the water temperatures you want to use for steeping various types of teas:

• Assam Tea: 212 degrees fahrenheit (100° C)
• Black Tea: 212 degrees fahrenheit (100° C)
• Chaga Tea: 122 degrees fahrenheit (50° C)
• Chai Tea: 212 degrees fahrenheit (100° C)
• Chamomile Tea: 195 degrees fahrenheit (90° C)
• Dandelion Tea: 200 degrees fahrenheit (93° C)
• Earl Grey Tea: 212 degrees fahrenheit (100° C)
• Green Tea: 180 degrees fahrenheit (82° C)
• Guayusa Tea: 180 degrees fahrenheit (82° C)
• Herbal Tea: 212 degrees fahrenheit (100° C)
• Jasmine Tea: 180 degrees fahrenheit (82° C)
• Lapsang Souchong Tea: 212 degrees fahrenheit (100° C)
• Oolong Tea: 195 degrees fahrenheit (90° C)
• Peppermint Tea: 212 degrees fahrenheit (100° C)
• Pu-erh Tea: 212 degrees fahrenheit (100° C)
• Purple Tea: 180 degrees fahrenheit (82° C)
• Rooibos Tea: 212 degrees fahrenheit (100° C)
• Spearmint Tea: 212 degrees fahrenheit (100° C)
• White Tea: 180 degrees fahrenheit (82° C)
• Yerba Mate: 150 degrees fahrenheit (66° C)

When you are steeping Green Tea, you want to let it steep for only a couple of minutes as it can become bitter if it is let to steep for longer. Alternatively, you can let Guayusa Tea steep for a while without the pitfall of it becoming bitter due to over-steeping.