Flowers, petals and herbs are not as delicate as teas. In fact when it somes to herbs used medicinally, it is recommended 1, 4, even 8 hours steeping (depending on the type of herb and use).
This obviously not the same with fruit and fruit is not an herb. Anyone who has over steeped lemon rind know this to be true. Just because it's not tea does not make it an herb.
Water temperature is also not as important as it is with tea. The only real guideline is to not drink it while it's too hot so as not to burn your tongue. Also, one can taste the infusion better when it is at a comfortable sipping temperature.
Moreover, herbs are like people and they hate being lumped into generalizations. They like it better when you get to know them for their personal characteristics.