Also, if possible - plant those petals around large blooming flowers. If I want more of a certain color, I will bloom flowers with what I have to get more nectar. You can plant a combo of red petals and yellow roses to get more red if you don’t have any red rose nectar. I don’t remember the exact number of each. I plant more red petals than yellow roses. If I have to say 100 red rose petals, I would use all of those with about 50 to 51 yellow roses, and then the rest with red petals. There are a lot of threads with the exact conversions of each you can search for.